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Tytuł:
Discovery of a radiation component from the Vela pulsar reaching 20 teraelectronvolts
Autorzy:
Holler, M.
Funk, S.
Renaud, M.
Fichet de Clairfontaine, G.
Zargaryan, D.
Komin, Nu.
Bulik, T.
Ruiz-Velasco, E.
Marcowith, A.
Cerruti, M.
Gallant, Y. A.
Noel, Angel
Reimer, A.
Egberts, K.
White, R.
Fontaine, G.
Chen, A.
Steenkamp, R.
O'Brien, P.
Gabici, S.
Kluźniak, W.
Kostunin, D.
Montanari, A.
Żywucka, N.
Bi, B.
Tavernier, T.
Lemoine-Goumard, M.
Moulin, E.
Stum, S. Le
de Naurois, M.
Lohse, T.
Leuschner, F.
Aschersleben, J.
Sushch, I.
Malyshev, D.
Veh, J.
Zech, A.
Steinmassl, S.
Suzuki, H.
Goswami, P.
Böttcher, M.
Chand, T.
Giavitto, G.
Spir-Jacob, M.
de Ona Wilhelmi, E.
Joshi, V.
Smith, D. A.
Khélifi, B.
Ghafourizadeh, S.
Batzofin, R.
Meyer, M.
Damascene Mbarubucyeye, J.
Moderski, R.
Lypova, I.
Santangelo, A.
Schwanke, U.
Zanin, R.
Fiasson, A.
Brose, R.
Specovius, A.
Jamrozy, Marek
Murach, T.
Tsuji, N.
Thorpe-Morgan, C.
Ohm, S.
Bernlöhr, K.
Lenain, J. -P.
Huang, Z.
Sanchez, D. A.
Werner, F.
Becherini, Y.
Chibueze, O.
Wun Wong, Y.
Chandra, S.
Ernenwein, J. -P.
Kosack, K.
Spencer, S.
Holch, T. L.
Takahashi, T.
Bylund, T.
Berge, D.
Wagner, S. J.
Marchegiani, P.
Kerr, M.
Marx, R.
Borowska, J.
Pita, S.
Ashkar, H.
Peron, G.
Prokoph, H.
Parsons, R. D.
Punch, M.
Tsirou, M.
Horns, D.
Boisson, C.
Cangemi, F.
Zacharias, M.
Bradascio, F.
Djannati-Ataï, A.
Niemiec, J.
Giunti, L.
Mitchell, A.
Panter, M.
Salzmann, H.
Kasai, E.
Wierzcholska, Alicja
Olivera-Nieto, L.
Rudak, B.
Stawarz, Łukasz
Grondin, M. -H.
Glawion, D.
Sinha, A.
Hofmann, W.
Marinos, P.
Panny, S.
Füßling, M.
Brun, F.
Cotter, G.
Johnston, S.
Marandon, V.
Breuhaus, M.
Mackey, J.
de Bony de Lavergne, M.
Luashvili, A.
Tanaka, T.
Sailer, S.
Katarzyński, K.
Zouari, S.
Dmytriiev, A.
Shapopi, J. N. S.
Aharonian, F.
van Eldik, C.
Glicenstein, J. F.
Burger-Scheidlin, C.
Terrier, R.
Muller, J.
Feijen, K.
Bolmont, J.
Sasaki, M.
Lang, R. G.
Maurin, G.
Reimer, O.
Nakashima, K.
Steppa, C.
Lemière, A.
Reichherzer, P.
Martins, V. Barbosa
Ait Benkhali, F.
Bruno, B.
Shannon, R. M.
Sahakian, V.
Rowell, G.
Hinton, J. A.
Ostrowski, Michał
Vecchi, M.
Casanova, S.
Jung-Richardt, I.
Zhu, S. J.
Pühlhofer, G.
Quirrenbach, A.
Prokhorov, D. A.
Backes, M.
Schüssler, F.
Zdziarski, A. A.
Tluczykont, M.
Grolleron, G.
Jankowsky, F.
Celic, J.
Vink, J.
Klepser, S.
Caroff, S.
Martí-Devesa, G.
Sol, H.
Yassin, H.
Rieger, F.
Haupt, M.
Haerer, L.
Mohrmann, L.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Observation of burst activity from SGR1935+2154 associated to first galactic FRB with H.E.S.S.
Autorzy:
Holler, M.
Nayerhoda, A.
Funk, S.
Renaud, M.
Reville, B.
Vincent, P.
Seyffert, A.
Davies, J.
Davids, I. D.
Prokhorov, D.
Marti'i-Devesa, G.
Baghmanyan, V.
Fichet de Clairfontaine, G.
Katz, U.
Konno, R.
Senniappan, M.
Zargaryan, D.
Bulik, T.
Marcowith, A.
Curlo, M.
Donath, A.
Puehlhofer, G.
Armand, C.
Komin, N.
Noel, Angel
Reimer, A.
Egberts, K.
White, R.
Fontaine, G.
Chen, A.
Steenkamp, R.
O'Brien, P.
Gabici, S.
van der Walt, J.
Huber, D.
Kostunin, D.
Meintjes, P.
Yusafzai, A.
Montanari, A.
Moore, C.
Khangulyan, D.
Venter, C.
Żywucka, N.
Ernenwein, J. P.
Du Plessis, L.
Bi, B.
Shiningayamwe, K.
Lamanna, G.
Tavernier, T.
Hinton, J.
Lemoine-Goumard, M.
Moulin, E.
Watson, J. J.
Lohse, T.
Leuschner, F.
Malyshev, D.
Veh, J.
Zech, A.
Katarzynski, K.
Steinmassl, S.
Romoli, C.
Tuffs, R.
Bony (de), M.
Böttcher, M.
Giavitto, G.
Spir-Jacob, M.
Thiersen, H.
Einecke, S.
Zmija, A.
Barnacka, Anna
Joshi, V.
Barbosa Martins, V.
Zdziarski, A.
Holch, T.
Batzofin, R.
Majumdar, J.
Damascene Mbarubucyeye, J.
Meyer, M.
Lypova, I.
Moderski, R.
Santangelo, A.
Schwanke, U.
Völk, H. J.
Fiasson, A.
Zanin, R.
Brose, R.
Specovius, A.
Jamrozy, Marek
Murach, T.
Khelifi, B.
Tsuji, N.
Devin, J.
Hermann, G.
Thorpe-Morgan, C.
Vasileiadis, G.
Sun, L.
Ohm, S.
van Soelen, B.
Huang, Z.
Dreyer, L.
Kreter, M.
Jung, I.
Werner, F.
Becherini, Y.
Zhu, S.
Schutte, H.
Rueda Ricarte, H.
Doroshenko, V.
Lemiere, A.
Le Stum, S.
Hattingh, S.
Gallant, Y.
Kosack, K.
Barnard, M.
Takahashi, T.
Lenain, J. P.
Bylund, T.
Chand, T. B.
Berge, D.
Marchegiani, P.
Mares, A.
Marx, R.
Duffy, C.
Parsons, D.
Pita, S.
Ashkar, H.
Peron, G.
Prokoph, H.
Tomankova, L.
Punch, M.
Tsirou, M.
Spencer, S. T.
Horns, D.
Uchiyama, Y.
Boisson, C.
Wong, Y. W.
Ait-Benkhali, F.
Cangemi, F.
Kundu, A.
Zacharias, M.
Morris, P.
Djannati-Ataï, A.
Niemiec, J.
Armstrong, T.
Giunti, L.
Mitchell, A.
Panter, M.
Salzmann, H.
Kasai, E.
Wierzcholska, Alicja
Olivera-Nieto, L.
Fegan, S.
Abdalla, H.
Rudak, B.
Stawarz, Łukasz
Glawion, D.
Sinha, A.
Kluzniak, W.
Hofmann, W.
Panny, S.
Brun, F.
Cotter, G.
Marandon, V.
Chambery, P.
Breuhaus, M.
Mackey, J.
Fuessling, M.
Luashvili, A.
Tanaka, T.
Sailer, S.
Wagner, S.
Anguener, O.
Zouari, S.
Dmytriiev, A.
Shapopi, J. N. S.
Aharonian, F.
van Eldik, C.
Catalano, J.
Glicenstein, J. F.
Simoni, R.
Terrier, R.
Muller, J.
Feijen, K.
Bolmont, J.
Sanchez, D.
Sasaki, M.
Stegmann, C.
Maurin, G.
Reimer, O.
Nakashima, K.
Steppa, C.
Taylor, A.
Spackman, H.
Dalgleish, H.
Reichherzer, P.
Davids, H.
Sahakian, V.
Levy, C.
Rowell, G.
Hoischen, C.
Ruiz Velasco, E.
Ostrowski, Michał
Hörbe, M.
Ona-Wilhelmi (de), E.
van Rensburg, C.
Schaefer, J.
Casanova, S.
Naurois (de), M.
Quirrenbach, A.
Backes, M.
Schüssler, F.
Grondin, M. H.
Arcaro, C.
Tluczykont, M.
Jankowsky, F.
Bernloehr, K.
Kukec Mezek, G.
Vink, J.
Frans, L.
Klepser, S.
Caroff, S.
Sol, H.
Yassin, H.
Remy, Q.
Rieger, F.
Haupt, M.
Poireau, V.
Oberholzer, L. L.
Mohrmann, L.
Opis:
Fast radio bursts (FRB) are enigmatic powerful single radio pulses with durations of several milliseconds and high brightness temperatures suggesting coherent emission mechanism. For the time being a number of extragalactic FRBs have been detected in the high-frequency radio band including repeating ones. The most plausible explanation for these phenomena is magnetar hyperflares. The first observational evidence of this scenario was obtained in April 2020 when an FRB was detected from the direction of the Galactic magnetar and soft gamma repeater SGR1935+2154. The FRB was preceded with a number of soft gamma-ray bursts observed by Swift-BAT satellite, which triggered the follow-up program of the H.E.S.S. imaging atmospheric Cherenkov telescopes (IACTs). H.E.S.S. has observed SGR1935+2154 over a 2 hour window few hours prior to the FRB detection by STARE2 and CHIME. The observations overlapped with other X-ray bursts from the magnetar detected by INTEGRAL and Swift-BAT, thus providing first observations of a magnetar in a flaring state in the very-high energy domain. We present the analysis of these observations, discuss the obtained results and prospects of the H.E.S.S. follow-up program for soft gamma repeaters and anomalous X-ray pulsars.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Search for dark matter annihilation towards the inner Milky Way halo with the H.E.S.S. Inner Galaxy Survey
Autorzy:
Holler, M.
Nayerhoda, A.
Funk, S.
Renaud, M.
Reville, B.
Vincent, P.
Seyffert, A.
Davies, J.
Davids, I. D.
Prokhorov, D.
Marti'i-Devesa, G.
Baghmanyan, V.
Fichet de Clairfontaine, G.
Katz, U.
Konno, R.
Senniappan, M.
Zargaryan, D.
Bulik, T.
Marcowith, A.
Curlo, M.
Donath, A.
Puehlhofer, G.
Armand, C.
Komin, N.
Noel, Angel
Reimer, A.
Egberts, K.
White, R.
Fontaine, G.
Chen, A.
Steenkamp, R.
O'Brien, P.
Gabici, S.
van der Walt, J.
Huber, D.
Kostunin, D.
Meintjes, P.
Yusafzai, A.
Montanari, A.
Moore, C.
Khangulyan, D.
Venter, C.
Żywucka, N.
Ernenwein, J. P.
Du Plessis, L.
Bi, B.
Shiningayamwe, K.
Lamanna, G.
Tavernier, T.
Hinton, J.
Lemoine-Goumard, M.
Moulin, E.
Watson, J. J.
Lohse, T.
Leuschner, F.
Malyshev, D.
Veh, J.
Zech, A.
Katarzynski, K.
Steinmassl, S.
Romoli, C.
Tuffs, R.
Bony (de), M.
Böttcher, M.
Giavitto, G.
Spir-Jacob, M.
Thiersen, H.
Einecke, S.
Zmija, A.
Barnacka, Anna
Joshi, V.
Barbosa Martins, V.
Wierzcholska, A.
Zdziarski, A.
Holch, T.
Batzofin, R.
Majumdar, J.
Damascene Mbarubucyeye, J.
Meyer, M.
Lypova, I.
Moderski, R.
Santangelo, A.
Schwanke, U.
Völk, H. J.
Fiasson, A.
Zanin, R.
Brose, R.
Specovius, A.
Jamrozy, Marek
Murach, T.
Khelifi, B.
Tsuji, N.
Devin, J.
Hermann, G.
Thorpe-Morgan, C.
Vasileiadis, G.
Sun, L.
Ohm, S.
van Soelen, B.
Huang, Z.
Dreyer, L.
Kreter, M.
Jung, I.
Werner, F.
Becherini, Y.
Zhu, S.
Schutte, H.
Rueda Ricarte, H.
Doroshenko, V.
Lemiere, A.
Le Stum, S.
Hattingh, S.
Gallant, Y.
Kosack, K.
Barnard, M.
Takahashi, T.
Lenain, J. P.
Bylund, T.
Chand, T. B.
Berge, D.
Marchegiani, P.
Mares, A.
Marx, R.
Duffy, C.
Parsons, D.
Pita, S.
Ashkar, H.
Peron, G.
Prokoph, H.
Tomankova, L.
Punch, M.
Tsirou, M.
Spencer, S. T.
Horns, D.
Uchiyama, Y.
Boisson, C.
Wong, Y. W.
Ait-Benkhali, F.
Cangemi, F.
Kundu, A.
Zacharias, M.
Morris, P.
Djannati-Ataï, A.
Niemiec, J.
Armstrong, T.
Giunti, L.
Mitchell, A.
Panter, M.
Salzmann, H.
Kasai, E.
Olivera-Nieto, L.
Fegan, S.
Abdalla, H.
Rudak, B.
Stawarz, Łukasz
Glawion, D.
Sinha, A.
Kluzniak, W.
Hofmann, W.
Panny, S.
Brun, F.
Cotter, G.
Marandon, V.
Chambery, P.
Breuhaus, M.
Mackey, J.
Fuessling, M.
Luashvili, A.
Tanaka, T.
Sailer, S.
Wagner, S.
Anguener, O.
Zouari, S.
Dmytriiev, A.
Shapopi, J. N. S.
Aharonian, F.
van Eldik, C.
Catalano, J.
Glicenstein, J. F.
Simoni, R.
Terrier, R.
Muller, J.
Feijen, K.
Bolmont, J.
Sanchez, D.
Sasaki, M.
Stegmann, C.
Maurin, G.
Reimer, O.
Nakashima, K.
Steppa, C.
Taylor, A.
Spackman, H.
Dalgleish, H.
Reichherzer, P.
Davids, H.
Sahakian, V.
Levy, C.
Rowell, G.
Hoischen, C.
Ruiz Velasco, E.
Ostrowski, Michał
Hörbe, M.
Ona-Wilhelmi (de), E.
van Rensburg, C.
Schaefer, J.
Casanova, S.
Naurois (de), M.
Quirrenbach, A.
Backes, M.
Schüssler, F.
Grondin, M. H.
Arcaro, C.
Tluczykont, M.
Jankowsky, F.
Bernloehr, K.
Kukec Mezek, G.
Vink, J.
Frans, L.
Klepser, S.
Caroff, S.
Sol, H.
Yassin, H.
Remy, Q.
Rieger, F.
Haupt, M.
Poireau, V.
Oberholzer, L. L.
Mohrmann, L.
Opis:
The presence of dark matter (DM) is suggested by a wealth of astrophysical and cosmological measurements. However, its underlying nature is yet unknown. Among the most promising candidates are weakly interacting massive particles (WIMPs): particles with mass and coupling strength at the electroweak scale and thermally produced in the early universe have a present relic density consistent with that observed today. WIMP self annihilation would produce Standard Model particles including gamma-rays, which have been long-time recognized as a prime messenger to indirectly detect dark matter signals. The centre of the Milky Way is predicted as the brightest source of DM annihilations. The H.E.S.S. collaboration is currently performing a survey of the inner region of the Milky Way, the Inner Galaxy Survey (IGS), intended to achieve the best sensitivity to faint and diffuse emissions in a region of several degrees around the Galactic Centre. We analyzed 2014-2020 observations taken with the five-telescope array to search for a DM annihilation signal. With the current dataset of about 550 hours, we found no significant excess and therefore derived strong constraints on the velocity-weighted annihilation cross-section. TeV thermal WIMPs can be probed in different annihilation channels.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Limits on primordial black hole evaporation from H.E.S.S. observations
Autorzy:
Holler, M.
Nayerhoda, A.
Funk, S.
Renaud, M.
Reville, B.
Vincent, P.
Seyffert, A.
Davies, J.
Davids, I. D.
Prokhorov, D.
Marti'i-Devesa, G.
Baghmanyan, V.
Fichet de Clairfontaine, G.
Katz, U.
Konno, R.
Senniappan, M.
Zargaryan, D.
Bulik, T.
Marcowith, A.
Curlo, M.
Donath, A.
Puehlhofer, G.
Armand, C.
Komin, N.
Noel, Angel
Reimer, A.
Egberts, K.
White, R.
Fontaine, G.
Chen, A.
Steenkamp, R.
O'Brien, P.
Gabici, S.
van der Walt, J.
Huber, D.
Kostunin, D.
Meintjes, P.
Yusafzai, A.
Montanari, A.
Moore, C.
Khangulyan, D.
Venter, C.
Żywucka, N.
Ernenwein, J. P.
Du Plessis, L.
Tavernier, T.
Bi, B.
Lamanna, G.
Shiningayamwe, K.
Hinton, J.
Lemoine-Goumard, M.
Moulin, E.
Watson, J. J.
Lohse, T.
Leuschner, F.
Malyshev, D.
Veh, J.
Zech, A.
Katarzynski, K.
Steinmassl, S.
Romoli, C.
Tuffs, R.
Bony (de), M.
Böttcher, M.
Giavitto, G.
Spir-Jacob, M.
Thiersen, H.
Einecke, S.
Zmija, A.
Barnacka, Anna
Joshi, V.
Barbosa Martins, V.
Zdziarski, A.
Holch, T.
Batzofin, R.
Majumdar, J.
Damascene Mbarubucyeye, J.
Meyer, M.
Lypova, I.
Moderski, R.
Santangelo, A.
Schwanke, U.
Völk, H. J.
Fiasson, A.
Zanin, R.
Brose, R.
Specovius, A.
Jamrozy, Marek
Murach, T.
Khelifi, B.
Tsuji, N.
Devin, J.
Hermann, G.
Thorpe-Morgan, C.
Vasileiadis, G.
Sun, L.
Ohm, S.
van Soelen, B.
Huang, Z.
Dreyer, L.
Kreter, M.
Jung, I.
Werner, F.
Becherini, Y.
Zhu, S.
Schutte, H.
Rueda Ricarte, H.
Doroshenko, V.
Lemiere, A.
Le Stum, S.
Hattingh, S.
Gallant, Y.
Kosack, K.
Barnard, M.
Takahashi, T.
Lenain, J. P.
Bylund, T.
Chand, T. B.
Berge, D.
Marchegiani, P.
Mares, A.
Marx, R.
Duffy, C.
Parsons, D.
Pita, S.
Ashkar, H.
Peron, G.
Prokoph, H.
Tomankova, L.
Punch, M.
Tsirou, M.
Spencer, S. T.
Horns, D.
Uchiyama, Y.
Boisson, C.
Wong, Y. W.
Ait-Benkhali, F.
Cangemi, F.
Kundu, A.
Zacharias, M.
Morris, P.
Djannati-Ataï, A.
Niemiec, J.
Armstrong, T.
Giunti, L.
Mitchell, A.
Panter, M.
Salzmann, H.
Kasai, E.
Wierzcholska, Alicja
Olivera-Nieto, L.
Fegan, S.
Abdalla, H.
Rudak, B.
Stawarz, Łukasz
Glawion, D.
Sinha, A.
Kluzniak, W.
Hofmann, W.
Panny, S.
Brun, F.
Cotter, G.
Marandon, V.
Chambery, P.
Breuhaus, M.
Mackey, J.
Fuessling, M.
Luashvili, A.
Tanaka, T.
Sailer, S.
Wagner, S.
Anguener, O.
Zouari, S.
Dmytriiev, A.
Shapopi, J. N. S.
Aharonian, F.
van Eldik, C.
Glicenstein, J. F.
Catalano, J.
Simoni, R.
Terrier, R.
Muller, J.
Feijen, K.
Bolmont, J.
Sanchez, D.
Sasaki, M.
Stegmann, C.
Maurin, G.
Reimer, O.
Nakashima, K.
Steppa, C.
Taylor, A.
Spackman, H.
Dalgleish, H.
Reichherzer, P.
Davids, H.
Sahakian, V.
Levy, C.
Rowell, G.
Hoischen, C.
Ruiz Velasco, E.
Ostrowski, Michał
Hörbe, M.
Ona-Wilhelmi (de), E.
van Rensburg, C.
Schaefer, J.
Casanova, S.
Naurois (de), M.
Quirrenbach, A.
Backes, M.
Schüssler, F.
Grondin, M. H.
Arcaro, C.
Tluczykont, M.
Jankowsky, F.
Bernloehr, K.
Kukec Mezek, G.
Vink, J.
Frans, L.
Klepser, S.
Caroff, S.
Sol, H.
Yassin, H.
Remy, Q.
Rieger, F.
Haupt, M.
Poireau, V.
Oberholzer, L. L.
Mohrmann, L.
Opis:
Primordial Black Holes are expected to be formed in the early Universe by the gravitational collapse of overdense regions, among other mechanisms. They are also expected to loose their mass over time by the Hawking radiation process. As the rates of this radiation increase with temperature, the PBH evaporation should result in a violent explosion. The current upper limits on explosion rates are on the order of 10$^{4}$ − 10$^{5}$pc$^{-3}$yr$^{-1}$. In this contribution we'll present the results of a search for TeV γ-ray burst within timescale of few seconds, using nearly 5000 hours of H.E.S.S. data. The search algorithm and statistical estimation strategy will be presented as well as cosmological implications of this measurement.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Astronomy outreach in Namibia : H.E.S.S. and beyond
Autorzy:
Holler, M.
Nayerhoda, A.
Funk, S.
Renaud, M.
Reville, B.
Vincent, P.
Seyffert, A.
Davies, J.
Davids, I. D.
Prokhorov, D.
Marti'i-Devesa, G.
Baghmanyan, V.
Fichet de Clairfontaine, G.
Katz, U.
Konno, R.
Senniappan, M.
Zargaryan, D.
Bulik, T.
Marcowith, A.
Curlo, M.
Donath, A.
Puehlhofer, G.
Armand, C.
Komin, N.
Noel, Angel
Reimer, A.
Egberts, K.
White, R.
Fontaine, G.
Chen, A.
Steenkamp, R.
O'Brien, P.
Gabici, S.
van der Walt, J.
Huber, D.
Kostunin, D.
Meintjes, P.
Yusafzai, A.
Montanari, A.
Moore, C.
Khangulyan, D.
Venter, C.
Żywucka, N.
Ernenwein, J. P.
Du Plessis, L.
Bi, B.
Shiningayamwe, K.
Lamanna, G.
Tavernier, T.
Hinton, J.
Lemoine-Goumard, M.
Moulin, E.
Watson, J. J.
Lohse, T.
Leuschner, F.
Malyshev, D.
Veh, J.
Zech, A.
Katarzynski, K.
Steinmassl, S.
Romoli, C.
Tuffs, R.
Bony (de), M.
Böttcher, M.
Giavitto, G.
Spir-Jacob, M.
Thiersen, H.
Einecke, S.
Zmija, A.
Barnacka, Anna
Joshi, V.
Barbosa Martins, V.
Zdziarski, A.
Holch, T.
Batzofin, R.
Majumdar, J.
Damascene Mbarubucyeye, J.
Meyer, M.
Lypova, I.
Moderski, R.
Santangelo, A.
Schwanke, U.
Völk, H. J.
Fiasson, A.
Zanin, R.
Brose, R.
Specovius, A.
Jamrozy, Marek
Murach, T.
Khelifi, B.
Tsuji, N.
Devin, J.
Hermann, G.
Thorpe-Morgan, C.
Vasileiadis, G.
Sun, L.
Ohm, S.
van Soelen, B.
Huang, Z.
Dreyer, L.
Kreter, M.
Jung, I.
Werner, F.
Becherini, Y.
Zhu, S.
Schutte, H.
Rueda Ricarte, H.
Doroshenko, V.
Lemiere, A.
Le Stum, S.
Hattingh, S.
Gallant, Y.
Kosack, K.
Barnard, M.
Takahashi, T.
Lenain, J. P.
Bylund, T.
Chand, T. B.
Berge, D.
Marchegiani, P.
Mares, A.
Marx, R.
Duffy, C.
Parsons, D.
Pita, S.
Ashkar, H.
Prokoph, H.
Peron, G.
Tomankova, L.
Punch, M.
Tsirou, M.
Spencer, S. T.
Horns, D.
Uchiyama, Y.
Boisson, C.
Wong, Y. W.
Ait-Benkhali, F.
Cangemi, F.
Kundu, A.
Zacharias, M.
Morris, P.
Djannati-Ataï, A.
Niemiec, J.
Armstrong, T.
Giunti, L.
Mitchell, A.
Panter, M.
Salzmann, H.
Kasai, E.
Wierzcholska, Alicja
Olivera-Nieto, L.
Fegan, S.
Abdalla, H.
Rudak, B.
Stawarz, Łukasz
Glawion, D.
Sinha, A.
Kluzniak, W.
Hofmann, W.
Panny, S.
Brun, F.
Cotter, G.
Marandon, V.
Chambery, P.
Breuhaus, M.
Mackey, J.
Fuessling, M.
Luashvili, A.
Tanaka, T.
Sailer, S.
Wagner, S.
Anguener, O.
Zouari, S.
Dmytriiev, A.
Shapopi, J. N. S.
Aharonian, F.
van Eldik, C.
Catalano, J.
Glicenstein, J. F.
Simoni, R.
Terrier, R.
Muller, J.
Feijen, K.
Bolmont, J.
Sanchez, D.
Sasaki, M.
Stegmann, C.
Maurin, G.
Reimer, O.
Nakashima, K.
Steppa, C.
Taylor, A.
Spackman, H.
Dalgleish, H.
Reichherzer, P.
Davids, H.
Sahakian, V.
Levy, C.
Rowell, G.
Hoischen, C.
Ruiz Velasco, E.
Ostrowski, Michał
Hörbe, M.
Ona-Wilhelmi (de), E.
van Rensburg, C.
Schaefer, J.
Casanova, S.
Naurois (de), M.
Quirrenbach, A.
Backes, M.
Schüssler, F.
Grondin, M. H.
Arcaro, C.
Tluczykont, M.
Jankowsky, F.
Bernloehr, K.
Kukec Mezek, G.
Vink, J.
Frans, L.
Klepser, S.
Caroff, S.
Sol, H.
Yassin, H.
Remy, Q.
Rieger, F.
Haupt, M.
Poireau, V.
Oberholzer, L. L.
Mohrmann, L.
Opis:
Astronomy plays a major role in the scientific landscape of Namibia. Because of its excellent sky conditions, Namibia is home to ground-based observatories like the High Energy Spectroscopic System (H.E.S.S.), in operation since 2002. Located near the Gamsberg mountain, H.E.S.S. performs groundbreaking science by detecting very-high-energy gamma rays from astronomical objects. The fascinating stories behind many of them are featured regularly in the "Source of the Month", a blog-like format intended for the general public with more than 170 features to date. In addition to other online communication via social media, H.E.S.S. outreach activities have been covered locally, e.g. through 'open days' and guided tours on the site itself. An overview of the H.E.S.S. outreach activities are presented in this contribution, along with discussions relating to the current landscape of astronomy outreach and education in Namibia. There has also been significant activity in the country in recent months, whereby astronomy is being used to further sustainable development via human capacity-building. Finally, as we take into account the future prospects of radio astronomy in the country, momentum for a wider range of astrophysics research is clearly building — this presents a great opportunity for the astronomy community to come together to capitalise on this movement and support astronomy outreach, with the overarching aim to advance sustainable development in Namibia.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Detection of new Extreme BL Lac objects with H.E.S.S. and Swift XRT
Autorzy:
Holler, M.
Nayerhoda, A.
Funk, S.
Renaud, M.
Reville, B.
Vincent, P.
Seyffert, A.
Davies, J.
Davids, I. D.
Prokhorov, D.
Marti'i-Devesa, G.
Baghmanyan, V.
Fichet de Clairfontaine, G.
Katz, U.
Konno, R.
Senniappan, M.
Zargaryan, D.
Bulik, T.
de Bony, M.
Marcowith, A.
Curlo, M.
Donath, A.
Puehlhofer, G.
Armand, C.
Komin, N.
Noel, Angel
Reimer, A.
Egberts, K.
White, R.
Fontaine, G.
Chen, A.
Steenkamp, R.
O'Brien, P.
Gabici, S.
van der Walt, J.
Huber, D.
Kostunin, D.
Meintjes, P.
Yusafzai, A.
Montanari, A.
Moore, C.
Khangulyan, D.
Venter, C.
Żywucka, N.
Ernenwein, J. P.
Du Plessis, L.
Bi, B.
Shiningayamwe, K.
Lamanna, G.
Tavernier, T.
Hinton, J.
Lemoine-Goumard, M.
Moulin, E.
Watson, J. J.
Lohse, T.
Leuschner, F.
Malyshev, D.
Veh, J.
Zech, A.
Katarzynski, K.
Steinmassl, S.
Romoli, C.
Tuffs, R.
Böttcher, M.
Giavitto, G.
Spir-Jacob, M.
Thiersen, H.
Einecke, S.
Zmija, A.
Barnacka, Anna
Joshi, V.
Barbosa Martins, V.
Zdziarski, A.
Holch, T.
Batzofin, R.
Meyer, M.
Damascene Mbarubucyeye, J.
Majumdar, J.
Lypova, I.
Moderski, R.
Santangelo, A.
Schwanke, U.
Völk, H. J.
Fiasson, A.
Zanin, R.
Brose, R.
Specovius, A.
Jamrozy, Marek
Murach, T.
Khelifi, B.
Tsuji, N.
Devin, J.
Hermann, G.
Thorpe-Morgan, C.
Vasileiadis, G.
Sun, L.
Ohm, S.
van Soelen, B.
Huang, Z.
Dreyer, L.
Kreter, M.
Jung, I.
Werner, F.
Becherini, Y.
Zhu, S.
Schutte, H.
Rueda Ricarte, H.
Doroshenko, V.
Lemiere, A.
Le Stum, S.
Hattingh, S.
Gallant, Y.
Kosack, K.
Barnard, M.
Takahashi, T.
Lenain, J. P.
Bylund, T.
Chand, T. B.
Berge, D.
Marchegiani, P.
Mares, A.
Marx, R.
Duffy, C.
Parsons, D.
Pita, S.
Ashkar, H.
Peron, G.
Prokoph, H.
Tomankova, L.
Punch, M.
Tsirou, M.
Spencer, S. T.
Horns, D.
Uchiyama, Y.
Boisson, C.
Wong, Y. W.
Ait-Benkhali, F.
Cangemi, F.
Kundu, A.
Zacharias, M.
Morris, P.
Djannati-Ataï, A.
Niemiec, J.
Armstrong, T.
Giunti, L.
Mitchell, A.
Panter, M.
Salzmann, H.
Kasai, E.
Wierzcholska, Alicja
Olivera-Nieto, L.
Fegan, S.
Abdalla, H.
Rudak, B.
Stawarz, Łukasz
Glawion, D.
Sinha, A.
Kluzniak, W.
Hofmann, W.
Panny, S.
Brun, F.
Cotter, G.
Marandon, V.
Chambery, P.
Breuhaus, M.
Mackey, J.
Fuessling, M.
Luashvili, A.
Tanaka, T.
Sailer, S.
Wagner, S.
Anguener, O.
Zouari, S.
Dmytriiev, A.
Shapopi, J. N. S.
Aharonian, F.
van Eldik, C.
Catalano, J.
Glicenstein, J. F.
Simoni, R.
Terrier, R.
Muller, J.
Feijen, K.
Sanchez, D.
Bolmont, J.
Sasaki, M.
Stegmann, C.
Maurin, G.
Reimer, O.
Nakashima, K.
Steppa, C.
Taylor, A.
Spackman, H.
Dalgleish, H.
Reichherzer, P.
Davids, H.
Sahakian, V.
Levy, C.
Rowell, G.
Hoischen, C.
Ruiz Velasco, E.
Ostrowski, Michał
Hörbe, M.
Ona-Wilhelmi (de), E.
van Rensburg, C.
Schaefer, J.
Casanova, S.
Naurois (de), M.
Quirrenbach, A.
Backes, M.
Schüssler, F.
Grondin, M. H.
Arcaro, C.
Tluczykont, M.
Jankowsky, F.
Bernloehr, K.
Kukec Mezek, G.
Vink, J.
Frans, L.
Klepser, S.
Caroff, S.
Sol, H.
Yassin, H.
Remy, Q.
Rieger, F.
Haupt, M.
Poireau, V.
Oberholzer, L. L.
Mohrmann, L.
Opis:
Extreme high synchrotron peaked blazars (EHBLs) are amongst the most powerful accelerators found in nature. Usually the synchrotron peak frequency of an EHBL is above 10$^{17}$ Hz, i.e., lies in the range of medium to hard X-rays making them ideal sources to study particle acceleration and radiative processes. EHBL objects are commonly observed at energies beyond several TeV, making them powerful probes of gamma-ray absorption in the intergalactic medium. During the last decade, several attempts have been made to increase the number of EHBL detected at TeV energies and probe their spectral characteristics. Here we report new detections of EHBLs in the TeV energy regime, each at a redshift of less than 0.2, by the High Energy Stereoscopic System (H.E.S.S.). Also, we report on X-ray observations of these EHBLs candidates with Swift-XRT. In conjunction with the very high energy observations, this allows us to probe the radiation mechanisms and the underlying particle acceleration processes.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Search for TeV emission from the Fermi Bubbles at low Galactic latitudes with H.E.S.S. inner Galaxy survey observations
Autorzy:
Holler, M.
Nayerhoda, A.
Funk, S.
Renaud, M.
Reville, B.
Vincent, P.
Seyffert, A.
Davies, J.
Davids, I. D.
Prokhorov, D.
Marti'i-Devesa, G.
Baghmanyan, V.
Fichet de Clairfontaine, G.
Katz, U.
Konno, R.
Senniappan, M.
Zargaryan, D.
Bulik, T.
Marcowith, A.
Curlo, M.
Donath, A.
Puehlhofer, G.
Armand, C.
Komin, N.
Noel, Angel
Reimer, A.
Egberts, K.
White, R.
Fontaine, G.
Chen, A.
Steenkamp, R.
O'Brien, P.
Gabici, S.
van der Walt, J.
Huber, D.
Kostunin, D.
Meintjes, P.
Yusafzai, A.
Moore, C.
Żywucka, N.
Khangulyan, D.
Venter, C.
Montanari, A.
Ernenwein, J. P.
Du Plessis, L.
Bi, B.
Shiningayamwe, K.
Lamanna, G.
Tavernier, T.
Hinton, J.
Lemoine-Goumard, M.
Moulin, E.
Watson, J. J.
Lohse, T.
Leuschner, F.
Malyshev, D.
Veh, J.
Zech, A.
Katarzynski, K.
Steinmassl, S.
Romoli, C.
Tuffs, R.
Bony (de), M.
Böttcher, M.
Giavitto, G.
Spir-Jacob, M.
Thiersen, H.
Einecke, S.
Zmija, A.
Barnacka, Anna
Joshi, V.
Barbosa Martins, V.
Zdziarski, A.
Holch, T.
Batzofin, R.
Majumdar, J.
Damascene Mbarubucyeye, J.
Meyer, M.
Lypova, I.
Moderski, R.
Santangelo, A.
Schwanke, U.
Völk, H. J.
Fiasson, A.
Zanin, R.
Brose, R.
Specovius, A.
Jamrozy, Marek
Murach, T.
Khelifi, B.
Tsuji, N.
Devin, J.
Hermann, G.
Thorpe-Morgan, C.
Vasileiadis, G.
Sun, L.
Ohm, S.
van Soelen, B.
Huang, Z.
Dreyer, L.
Kreter, M.
Jung, I.
Werner, F.
Becherini, Y.
Zhu, S.
Schutte, H.
Rueda Ricarte, H.
Doroshenko, V.
Lemiere, A.
Le Stum, S.
Hattingh, S.
Gallant, Y.
Kosack, K.
Barnard, M.
Takahashi, T.
Lenain, J. P.
Bylund, T.
Chand, T. B.
Berge, D.
Marchegiani, P.
Mares, A.
Marx, R.
Duffy, C.
Parsons, D.
Pita, S.
Ashkar, H.
Peron, G.
Prokoph, H.
Tomankova, L.
Punch, M.
Tsirou, M.
Spencer, S. T.
Horns, D.
Uchiyama, Y.
Boisson, C.
Wong, Y. W.
Ait-Benkhali, F.
Cangemi, F.
Kundu, A.
Zacharias, M.
Morris, P.
Djannati-Ataï, A.
Niemiec, J.
Armstrong, T.
Giunti, L.
Mitchell, A.
Panter, M.
Salzmann, H.
Kasai, E.
Wierzcholska, Alicja
Olivera-Nieto, L.
Fegan, S.
Abdalla, H.
Rudak, B.
Stawarz, Łukasz
Glawion, D.
Sinha, A.
Kluzniak, W.
Hofmann, W.
Panny, S.
Brun, F.
Cotter, G.
Marandon, V.
Chambery, P.
Breuhaus, M.
Mackey, J.
Fuessling, M.
Luashvili, A.
Tanaka, T.
Sailer, S.
Wagner, S.
Anguener, O.
Zouari, S.
Dmytriiev, A.
Shapopi, J. N. S.
Aharonian, F.
van Eldik, C.
Catalano, J.
Glicenstein, J. F.
Simoni, R.
Terrier, R.
Muller, J.
Feijen, K.
Bolmont, J.
Sanchez, D.
Sasaki, M.
Stegmann, C.
Maurin, G.
Reimer, O.
Nakashima, K.
Steppa, C.
Taylor, A.
Spackman, H.
Dalgleish, H.
Reichherzer, P.
Davids, H.
Sahakian, V.
Levy, C.
Rowell, G.
Hoischen, C.
Ruiz Velasco, E.
Ostrowski, Michał
Hörbe, M.
Ona-Wilhelmi (de), E.
van Rensburg, C.
Schaefer, J.
Casanova, S.
Naurois (de), M.
Quirrenbach, A.
Backes, M.
Schüssler, F.
Grondin, M. H.
Arcaro, C.
Tluczykont, M.
Jankowsky, F.
Bernloehr, K.
Kukec Mezek, G.
Vink, J.
Frans, L.
Klepser, S.
Caroff, S.
Sol, H.
Yassin, H.
Remy, Q.
Rieger, F.
Haupt, M.
Poireau, V.
Oberholzer, L. L.
Mohrmann, L.
Opis:
The Fermi Bubbles were discovered about a decade ago in the Fermi-LAT data as a double-lobe structure extending up to 55° in Galactic latitudes above and below the Galactic Center. At the moment their origin is still unknown. The H.E.S.S. collaboration is currently performing the first ever survey in TeV gamma rays of the Milky Way inner region: the Inner Galaxy Survey. This survey is intended to achieve the best sensitivity to faint and diffuse emissions in a region of several degrees around the Galactic Centre. It provides an unprecedented sensitivity to dark matter signals, new diffuse emissions, and TeV outflows from the Galactic Centre. Understanding the properties of the Fermi Bubbles at low Galactic latitudes will provide key insights into their origin. We search for TeV emission at the base of the Fermi Bubbles using low-latitude spatial templates. The first results obtained with the 2014-2020 H.E.S.S. observations will be reported.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Search for enhanced TeV gamma ray emission from Giant Molecular Clouds using H.E.S.S.
Autorzy:
Holler, M.
Nayerhoda, A.
Funk, S.
Renaud, M.
Reville, B.
Vincent, P.
Seyffert, A.
Davies, J.
Davids, I. D.
Prokhorov, D.
Marti'i-Devesa, G.
Baghmanyan, V.
Fichet de Clairfontaine, G.
Katz, U.
Konno, R.
Senniappan, M.
Zargaryan, D.
Bulik, T.
Marcowith, A.
Curlo, M.
Donath, A.
Puehlhofer, G.
Armand, C.
Komin, N.
Noel, Angel
Reimer, A.
Egberts, K.
White, R.
Fontaine, G.
Chen, A.
Steenkamp, R.
O'Brien, P.
Gabici, S.
van der Walt, J.
Huber, D.
Kostunin, D.
Meintjes, P.
Yusafzai, A.
Żywucka, N.
Montanari, A.
Khangulyan, D.
Moore, C.
Venter, C.
Ernenwein, J. P.
Du Plessis, L.
Bi, B.
Shiningayamwe, K.
Lamanna, G.
Tavernier, T.
Hinton, J.
Lemoine-Goumard, M.
Moulin, E.
Watson, J. J.
Lohse, T.
Leuschner, F.
Malyshev, D.
Veh, J.
Zech, A.
Katarzynski, K.
Steinmassl, S.
Romoli, C.
Tuffs, R.
Bony (de), M.
Böttcher, M.
Giavitto, G.
Spir-Jacob, M.
Thiersen, H.
Einecke, S.
Zmija, A.
Barnacka, Anna
Joshi, V.
Barbosa Martins, V.
Zdziarski, A.
Holch, T.
Batzofin, R.
Majumdar, J.
Damascene Mbarubucyeye, J.
Meyer, M.
Lypova, I.
Moderski, R.
Santangelo, A.
Schwanke, U.
Völk, H. J.
Fiasson, A.
Zanin, R.
Brose, R.
Specovius, A.
Jamrozy, Marek
Murach, T.
Khelifi, B.
Tsuji, N.
Devin, J.
Hermann, G.
Thorpe-Morgan, C.
Vasileiadis, G.
Sun, L.
Ohm, S.
van Soelen, B.
Huang, Z.
Dreyer, L.
Kreter, M.
Jung, I.
Werner, F.
Becherini, Y.
Zhu, S.
Schutte, H.
Rueda Ricarte, H.
Doroshenko, V.
Lemiere, A.
Le Stum, S.
Hattingh, S.
Gallant, Y.
Kosack, K.
Barnard, M.
Takahashi, T.
Lenain, J. P.
Bylund, T.
Chand, T. B.
Berge, D.
Marchegiani, P.
Mares, A.
Marx, R.
Duffy, C.
Parsons, D.
Pita, S.
Peron, G.
Ashkar, H.
Prokoph, H.
Tomankova, L.
Punch, M.
Tsirou, M.
Spencer, S. T.
Horns, D.
Uchiyama, Y.
Boisson, C.
Wong, Y. W.
Ait-Benkhali, F.
Cangemi, F.
Kundu, A.
Zacharias, M.
Morris, P.
Djannati-Ataï, A.
Niemiec, J.
Mitchell, A.
Armstrong, T.
Giunti, L.
Panter, M.
Salzmann, H.
Kasai, E.
Wierzcholska, Alicja
Olivera-Nieto, L.
Fegan, S.
Abdalla, H.
Rudak, B.
Stawarz, Łukasz
Glawion, D.
Sinha, A.
Kluzniak, W.
Hofmann, W.
Panny, S.
Brun, F.
Cotter, G.
Marandon, V.
Chambery, P.
Breuhaus, M.
Mackey, J.
Fuessling, M.
Luashvili, A.
Tanaka, T.
Sailer, S.
Wagner, S.
Anguener, O.
Zouari, S.
Dmytriiev, A.
Shapopi, J. N. S.
Aharonian, F.
van Eldik, C.
Catalano, J.
Glicenstein, J. F.
Simoni, R.
Terrier, R.
Muller, J.
Feijen, K.
Bolmont, J.
Sanchez, D.
Sasaki, M.
Stegmann, C.
Maurin, G.
Reimer, O.
Nakashima, K.
Steppa, C.
Taylor, A.
Spackman, H.
Dalgleish, H.
Reichherzer, P.
Davids, H.
Sahakian, V.
Levy, C.
Rowell, G.
Hoischen, C.
Ruiz Velasco, E.
Ostrowski, Michał
Hörbe, M.
Ona-Wilhelmi (de), E.
van Rensburg, C.
Schaefer, J.
Casanova, S.
Naurois (de), M.
Quirrenbach, A.
Backes, M.
Schüssler, F.
Grondin, M. H.
Hess
Arcaro, C.
Tluczykont, M.
Jankowsky, F.
Bernloehr, K.
Kukec Mezek, G.
Vink, J.
Frans, L.
Klepser, S.
Caroff, S.
Sol, H.
Yassin, H.
Remy, Q.
Rieger, F.
Haupt, M.
Poireau, V.
Oberholzer, L. L.
Mohrmann, L.
Opis:
Cosmic Ray (CR) interactions with the dense gas inside Giant Molecular Clouds (GMCs) produce neutral pions, which in turn decay into gamma rays. Thus, the gamma ray emission from GMCs is a direct tracer of the cosmic ray density and the matter density inside the clouds. Detection of enhanced TeV emission from GMCs, i.e., an emission significantly larger than what is expected from the average Galactic cosmic rays illuminating the cloud, can imply a variation in the local cosmic ray density, due to, for example, the presence of a recent accelerator in proximity to the cloud. Such gamma-ray observations can be crucial in probing the cosmic ray distribution across our Galaxy, but are complicated to perform with present generation Imaging Atmospheric Cherenkov Telescopes (IACTs). These studies require differentiating between the strong cosmic-ray induced background, the large scale diffuse emission, and the emission from the clouds, which is difficult to the small field of view of present generation IACTs. In this contribution, we use H.E.S.S. data collected over 16 years to search for TeV emission from GMCs in the inner molecular galacto-centric ring of our Galaxy. We implement a 3D FoV likelihood technique, and simultaneously model the hadronic background, the galactic diffuse emission and the emission expected from known VHE sources to probe for excess TeV gamma ray emission from GMCs.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
The young massive stellar cluster Westerlund 1 in $\gamma$ rays as seen with H.E.S.S.
Autorzy:
Holler, M.
Nayerhoda, A.
Funk, S.
Renaud, M.
Reville, B.
Vincent, P.
Seyffert, A.
Davies, J.
Davids, I. D.
Prokhorov, D.
Marti'i-Devesa, G.
Baghmanyan, V.
Fichet de Clairfontaine, G.
Katz, U.
Konno, R.
Senniappan, M.
Zargaryan, D.
Bulik, T.
Marcowith, A.
Curlo, M.
Donath, A.
Puehlhofer, G.
Armand, C.
Komin, N.
Noel, Angel
Reimer, A.
Egberts, K.
White, R.
Rauth, R.
Fontaine, G.
Chen, A.
Steenkamp, R.
O'Brien, P.
Gabici, S.
van der Walt, J.
Huber, D.
Kostunin, D.
Meintjes, P.
Yusafzai, A.
Montanari, A.
Moore, C.
Khangulyan, D.
Venter, C.
Żywucka, N.
Ernenwein, J. P.
Du Plessis, L.
Bi, B.
Shiningayamwe, K.
Lamanna, G.
Tavernier, T.
Hinton, J.
Lemoine-Goumard, M.
Moulin, E.
Watson, J. J.
Lohse, T.
Leuschner, F.
Malyshev, D.
Veh, J.
Zech, A.
Katarzynski, K.
Steinmassl, S.
Romoli, C.
Tuffs, R.
Bony (de), M.
Böttcher, M.
Giavitto, G.
Spir-Jacob, M.
Thiersen, H.
Einecke, S.
Zmija, A.
Barnacka, Anna
Joshi, V.
Barbosa Martins, V.
Zdziarski, A.
Holch, T.
Batzofin, R.
Majumdar, J.
Damascene Mbarubucyeye, J.
Meyer, M.
Lypova, I.
Moderski, R.
Santangelo, A.
Schwanke, U.
Völk, H. J.
Fiasson, A.
Zanin, R.
Brose, R.
Specovius, A.
Jamrozy, Marek
Murach, T.
Khelifi, B.
Tsuji, N.
Devin, J.
Hermann, G.
Thorpe-Morgan, C.
Vasileiadis, G.
Sun, L.
Ohm, S.
van Soelen, B.
Huang, Z.
Dreyer, L.
Kreter, M.
Jung, I.
Werner, F.
Becherini, Y.
Zhu, S.
Schutte, H.
Rueda Ricarte, H.
Doroshenko, V.
Lemiere, A.
Le Stum, S.
Hattingh, S.
Gallant, Y.
Kosack, K.
Barnard, M.
Takahashi, T.
Lenain, J. P.
Bylund, T.
Chand, T. B.
Berge, D.
Marchegiani, P.
Mares, A.
Marx, R.
Duffy, C.
Parsons, D.
Pita, S.
Ashkar, H.
Peron, G.
Prokoph, H.
Tomankova, L.
Punch, M.
Tsirou, M.
Spencer, S. T.
Horns, D.
Uchiyama, Y.
Boisson, C.
Wong, Y. W.
Ait-Benkhali, F.
Cangemi, F.
Kundu, A.
Zacharias, M.
Morris, P.
Djannati-Ataï, A.
Niemiec, J.
Armstrong, T.
Giunti, L.
Mitchell, A.
Panter, M.
Salzmann, H.
Kasai, E.
Wierzcholska, Alicja
Olivera-Nieto, L.
Fegan, S.
Abdalla, H.
Rudak, B.
Stawarz, Łukasz
Glawion, D.
Sinha, A.
Kluzniak, W.
Hofmann, W.
Panny, S.
Brun, F.
Cotter, G.
Marandon, V.
Chambery, P.
Breuhaus, M.
Mackey, J.
Fuessling, M.
Luashvili, A.
Tanaka, T.
Sailer, S.
Wagner, S.
Anguener, O.
Zouari, S.
van Eldik, C.
Dmytriiev, A.
Aharonian, F.
Shapopi, J. N. S.
Catalano, J.
Glicenstein, J. F.
Simoni, R.
Terrier, R.
Muller, J.
Feijen, K.
Bolmont, J.
Sanchez, D.
Sasaki, M.
Stegmann, C.
Maurin, G.
Reimer, O.
Nakashima, K.
Steppa, C.
Taylor, A.
Spackman, H.
Dalgleish, H.
Reichherzer, P.
Davids, H.
Sahakian, V.
Levy, C.
Rowell, G.
Hoischen, C.
Ruiz Velasco, E.
Ostrowski, Michał
Hörbe, M.
Ona-Wilhelmi (de), E.
van Rensburg, C.
Schaefer, J.
Casanova, S.
Naurois (de), M.
Quirrenbach, A.
Backes, M.
Schüssler, F.
Grondin, M. H.
Arcaro, C.
Tluczykont, M.
Jankowsky, F.
Bernloehr, K.
Kukec Mezek, G.
Vink, J.
Frans, L.
Klepser, S.
Caroff, S.
Sol, H.
Yassin, H.
Remy, Q.
Rieger, F.
Haupt, M.
Poireau, V.
Oberholzer, L. L.
Mohrmann, L.
Opis:
Massive stellar clusters have recently been hypothesised as candidates for the acceleration of hadronic cosmic rays up to PeV energies. Previously, the H.E.S.S. Collaboration has reported about very extended 𝛾-ray emission around Westerlund 1, a massive young stellar cluster in the Milky Way. In this contribution we present an updated analysis that employs a new analysis technique and is based on a much larger data set, allowing us to constrain better the morphology and the energy spectrum of the emission. The analysis technique used is a three-dimensional likelihood analysis, which is especially well suited for largely extended sources. The origin of the 𝛾-ray emission will be discussed in light of multi-wavelength observations.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Revisiting the PeVatron candidate MGRO J1908+06 with an updated H.E.S.S. analysis
Autorzy:
Holler, M.
Nayerhoda, A.
Funk, S.
Renaud, M.
Reville, B.
Vincent, P.
Seyffert, A.
Davies, J.
Davids, I. D.
Prokhorov, D.
Marti'i-Devesa, G.
Baghmanyan, V.
Fichet de Clairfontaine, G.
Katz, U.
Konno, R.
Senniappan, M.
Zargaryan, D.
Bulik, T.
Marcowith, A.
Curlo, M.
Donath, A.
Puehlhofer, G.
Armand, C.
Komin, N.
Noel, Angel
Reimer, A.
Egberts, K.
White, R.
Fontaine, G.
Chen, A.
Steenkamp, R.
O'Brien, P.
Gabici, S.
van der Walt, J.
Huber, D.
Kostunin, D.
Meintjes, P.
Yusafzai, A.
Montanari, A.
Moore, C.
Khangulyan, D.
Venter, C.
Żywucka, N.
Ernenwein, J. P.
Du Plessis, L.
Bi, B.
Shiningayamwe, K.
Lamanna, G.
Tavernier, T.
Hinton, J.
Lemoine-Goumard, M.
Moulin, E.
Watson, J. J.
Lohse, T.
Leuschner, F.
Malyshev, D.
Veh, J.
Zech, A.
Katarzynski, K.
Steinmassl, S.
Romoli, C.
Tuffs, R.
Bony (de), M.
Böttcher, M.
Giavitto, G.
Spir-Jacob, M.
Thiersen, H.
Einecke, S.
Zmija, A.
Barnacka, Anna
Joshi, V.
Barbosa Martins, V.
Zdziarski, A.
Holch, T.
Batzofin, R.
Majumdar, J.
Damascene Mbarubucyeye, J.
Meyer, M.
Lypova, I.
Moderski, R.
Santangelo, A.
Schwanke, U.
Völk, H. J.
Fiasson, A.
Zanin, R.
Brose, R.
Specovius, A.
Jamrozy, Marek
Murach, T.
Khelifi, B.
Tsuji, N.
Devin, J.
Hermann, G.
Thorpe-Morgan, C.
Vasileiadis, G.
Sun, L.
Ohm, S.
van Soelen, B.
Huang, Z.
Dreyer, L.
Kreter, M.
Jung, I.
Werner, F.
Becherini, Y.
Zhu, S.
Schutte, H.
Rueda Ricarte, H.
Doroshenko, V.
Lemiere, A.
Le Stum, S.
Hattingh, S.
Gallant, Y.
Kosack, K.
Barnard, M.
Takahashi, T.
Lenain, J. P.
Bylund, T.
Chand, T. B.
Berge, D.
Marchegiani, P.
Mares, A.
Marx, R.
Duffy, C.
Parsons, D.
Pita, S.
Ashkar, H.
Peron, G.
Prokoph, H.
Tomankova, L.
Punch, M.
Tsirou, M.
Spencer, S. T.
Horns, D.
Uchiyama, Y.
Boisson, C.
Wong, Y. W.
Ait-Benkhali, F.
Cangemi, F.
Kundu, A.
Zacharias, M.
Morris, P.
Djannati-Ataï, A.
Niemiec, J.
Armstrong, T.
Giunti, L.
Mitchell, A.
Panter, M.
Salzmann, H.
Kasai, E.
Wierzcholska, Alicja
Olivera-Nieto, L.
Fegan, S.
Abdalla, H.
Rudak, B.
Stawarz, Łukasz
Glawion, D.
Sinha, A.
Kluzniak, W.
Hofmann, W.
Panny, S.
Brun, F.
Cotter, G.
Marandon, V.
Chambery, P.
Breuhaus, M.
Mackey, J.
Fuessling, M.
Luashvili, A.
Tanaka, T.
Sailer, S.
Wagner, S.
Anguener, O.
Zouari, S.
Dmytriiev, A.
Shapopi, J. N. S.
Aharonian, F.
van Eldik, C.
Catalano, J.
Glicenstein, J. F.
Simoni, R.
Terrier, R.
Muller, J.
Feijen, K.
Bolmont, J.
Sanchez, D.
Sasaki, M.
Stegmann, C.
Maurin, G.
Reimer, O.
Nakashima, K.
Steppa, C.
Taylor, A.
Spackman, H.
Dalgleish, H.
Reichherzer, P.
Davids, H.
Sahakian, V.
Levy, C.
Rowell, G.
Hoischen, C.
Ruiz Velasco, E.
Ostrowski, Michał
Hörbe, M.
Ona-Wilhelmi (de), E.
van Rensburg, C.
Schaefer, J.
Casanova, S.
Naurois (de), M.
Quirrenbach, A.
Backes, M.
Schüssler, F.
Grondin, M. H.
Arcaro, C.
Tluczykont, M.
Jankowsky, F.
Bernloehr, K.
Kukec Mezek, G.
Vink, J.
Frans, L.
Klepser, S.
Caroff, S.
Sol, H.
Yassin, H.
Remy, Q.
Rieger, F.
Haupt, M.
Poireau, V.
Oberholzer, L. L.
Mohrmann, L.
Opis:
Detecting and studying galactic gamma-ray sources emitting very-high energy photons sheds light on the acceleration and propagation of cosmic rays presumably created in these sources. Currently, there are few sources emitting photons with energies exceeding 100 TeV. In this work we revisit the unidentified source MGRO J1908+06, initially detected by Milagro, using an updated H.E.S.S. dataset and analysis pipeline. The vicinity of the source contains a supernova remnant and pulsars as well as molecular clouds. This makes the identification of the primary source(s) of galactic cosmic rays as well as the nature of the gamma-ray emission challenging, especially in light of the recent HAWC and LHAASO detection of the high energy tail of its spectrum. Exploiting the better angular resolution as compared to particle detectors, we investigate the morphology of the source as well as its spectral properties.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Wyświetlanie 1-10 z 23

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