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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
Tytuł:
Science verification of the new FlashCam-based camera in the 28 m telescope of 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.
Puehlhofer, G.
Donath, A.
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.
Bernlöhr, K.
van Soelen, B.
Huang, Z.
Dreyer, L.
Kreter, M.
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.
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.
Jung-Richardt, I.
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:
In October 2019 the central 28 m telescope of the H.E.S.S. experiment has been upgraded with a new camera. The camera is based on the FlashCam design which has been developed in view of a possible future implementation in the medium-sized telescopes of the Cherenkov Telescope Array (CTA). We report here on the results of the science verification program that has been performed after commissioning of the new camera, to show that the camera and software pipelines are working up to expectations.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Is PKS 0625-354 another variable TeV active galactic nucleus?
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:
The majority of the active galactic nuclei (AGN) detected at very-high-energies above 100 GeV belong to the class of blazars with a small angle between the jet-axis and the line-of-sight. Only about 10 percent of the gamma-ray AGN are objects with a larger viewing angle resulting in a smaller Doppler boosting of the emission. Originally, it was believed that gamma-ray emission can only be observed from blazars and those are variable in its brightness. Instead, the last years have shown that non-blazar active galaxies also show a fascinating variability behaviour which provide important new insights into the physical processes responsible for the gamma-ray production and especially for flaring events. Here, we report on the observation of gamma-ray variability of the active galaxy PKS 0625−354 detected with the H.E.S.S. telescopes in November 2018. The classification of PKS 0625−354 is a still matter of debate. The H.E.S.S. measurements were performed as part of a flux observing program and showed in the first night of the observation a detection of the object with > 5σ. A denser observation campaign followed for the next nine nights resulting in a decrease of the gamma-ray flux. Those observations were accompanied with Swift in the X-ray and UV/optical band allowing for the reconstruction of a multi-band broad-band spectral energy distribution. We will discuss the implications of the gamma-ray variability of the object.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Deep observations of Keplers SNR with H.E.S.S.
Autorzy:
Holler, M.
Nayerhoda, A.
Funk, S.
Renaud, M.
Reville, B.
Vincent, P.
Seyffert, A.
Davies, J.
Prokhorov, D.
Davids, I. 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.
Puehlhofer, G.
Donath, A.
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.
Völk, H. J.
Lypova, I.
Meyer, M.
Moderski, R.
Santangelo, A.
Schwanke, U.
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.
Simoni, R.
Catalano, J.
Glicenstein, J. F.
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:
Kepler’s supernova remnant (SNR) which is produced by the most recent naked-eye supernova in our Galaxy is one of the best studied SNRs, but its gamma-ray detection has eluded us so far. Observations with modern imaging atmospheric Cherenkov telescopes (IACT) have enlarged the knowledge about nearby SNRs with ages younger than 500 years by establishing Cassiopeia A and Tycho’s SNRs as very high energy (VHE) gamma-ray sources and setting a lower limit on the distance to Kepler’s SNR. This SNR is significantly more distant than the other two and expected to be one of the faintest gamma-ray sources within reach of the IACT arrays of this generation. We report strong evidence for a VHE signal from Kepler’s SNR based on deep observations of the High Energy Stereoscopic System (H.E.S.S.) with an exposure of 152 hours, including 122 hours accumulated in 2017-2020. We further discuss implications of this result for cosmic-ray acceleration in young SNRs.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
H.E.S.S. ToO program on nearby core-collapse Supernovae : search for very-high energy γ-ray emission towards the SN candidate AT2019krl in M74
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.
Ryder, S.
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:
While the youngest known supernova remnants (SNRs), such as Cassiopeia A (Cas A), have been proven to be able to accelerate cosmic rays (CRs) only up to ∼ 10$^{14}$ eV at their present evolutionary stages, recent studies have shown that particle energies larger than a few PeV (10$^{15}$ eV) could be reached during the early stages of a core-collapse Supernova (cc-SN), when the high-velocity forward shock expands into the dense circumstellar medium (CSM) shaped by the stellar progenitor wind. Such environments, in particular the type IIn SNe whose progenitors may exhibit mass loss rates as high as 10$^{-2}$ M$_{\bigodot}$ yr$^{-1}$, could thus lead to γ-ray emission from $\pi ^{0}$ decay in hadronic interactions, potentially detectable with current Cherenkov telescopes at very-high energies. Such a detection would provide direct evidence for efficient acceleration of CR protons/nuclei in supernovae, and hence new insights on the long-standing issue of the origin of Galactic Cosmic Rays. In that context, the High Energy Stereoscopic System (H.E.S.S.) has been carrying out a Target of Opportunity program since 2016 to search for such an early very-high-energy γ-ray emission towards nearby core-collapse supernovae and supernova candidates (up to ∼ 10 Mpc), within a few weeks after discovery. After giving an overview of this H.E.S.S. Target of Opportunity program, we present the results obtained from the July 2019 observations towards the transient AT2019krl, originally classified as a type IIn supernova, which occurred in the galaxy M74 at ∼ 9.8 Mpc. Although its nature still remains unclear, the derived H.E.S.S. constraints on this transient are placed in the general context of the expected VHE γ-ray emission from core-collapse supernovae.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Detection of extended TeV emission around the Geminga pulsar with H.E.S.S.
Autorzy:
Schüssler, F.
Watson, J. J.
Batzofin, R.
Niemiec, J.
Holler, M.
Fegan, S.
Ruiz Velasco, E.
Simoni, R.
Fontaine, G.
Sinha, A.
Santangelo, A.
Nayerhoda, A.
Kluzniak, W.
Aharonian, F.
Kostunin, D.
Thorpe-Morgan, C.
Seyffert, A.
Katz, U.
Giavitto, G.
Romoli, C.
Wagner, S.
Yusafzai, A.
Gallant, Y.
Caroff, S.
Ohm, S.
Curlo, M.
Taylor, A.
Glawion, D.
Konno, R.
Lenain, J. P.
Marcowith, A.
Kasai, E.
Nakashima, K.
Takahashi, T.
Sasaki, M.
Wierzcholska, Alicja
Spir-Jacob, M.
Lohse, T.
Bony (de), M.
Steppa, C.
Levy, C.
Zhu, S.
Barbosa Martins, V.
Punch, M.
Vink, J.
Brose, R.
Reimer, O.
Boisson, C.
Casanova, S.
Werner, F.
Davies, J.
Huber, D.
Mohrmann, L.
Lemiere, A.
Senniappan, M.
Anguener, O.
Chambery, P.
Ona-Wilhelmi (de), E.
Prokhorov, D.
Venter, C.
Marchegiani, P.
Davids, H.
Bulik, T.
Böttcher, M.
Brun, F.
Huang, Z.
Panny, S.
Stegmann, C.
Tluczykont, M.
Naurois (de), M.
Ait-Benkhali, F.
Veh, J.
Marandon, V.
Haupt, M.
van Eldik, C.
Tuffs, R.
Armstrong, T.
Mares, A.
Stawarz, Łukasz
Poireau, V.
Salzmann, H.
Wong, Y. W.
Giunti, L.
Vincent, P.
Bernloehr, K.
Bylund, T.
Rudak, B.
Zmija, A.
Baghmanyan, V.
Bolmont, J.
Reimer, A.
Joshi, V.
Prokoph, H.
Fiasson, A.
Lypova, I.
Bi, B.
Tomankova, L.
Renaud, M.
Rueda Ricarte, H.
Uchiyama, Y.
Tavernier, T.
Spackman, H.
Khangulyan, D.
Yassin, H.
Moulin, E.
Kosack, K.
Majumdar, J.
Marti'i-Devesa, G.
Khelifi, B.
Feijen, K.
Zargaryan, D.
Mitchell, A.
Sailer, S.
Gabici, S.
Fuessling, M.
Funk, S.
Vasileiadis, G.
Muller, J.
Chen, A.
Peron, G.
Hess
Steinmassl, S.
Olivera-Nieto, L.
Spencer, S. T.
Jung, I.
Breuhaus, M.
Sun, L.
Tsirou, M.
Dmytriiev, A.
Davids, I. D.
Komin, N.
Hoischen, C.
Barnacka, Anna
Ostrowski, Michał
Chand, T. B.
Noel, Angel
Zacharias, M.
Doroshenko, V.
Djannati-Ataï, A.
Kundu, A.
van der Walt, J.
Morris, P.
Hermann, G.
Le Stum, S.
Jamrozy, Marek
Shapopi, J. N. S.
Schwanke, U.
Grondin, M. H.
Cotter, G.
Mackey, J.
Moderski, R.
Parsons, D.
Leuschner, F.
Moore, C.
Einecke, S.
Frans, L.
O'Brien, P.
Remy, Q.
Becherini, Y.
Fichet de Clairfontaine, G.
Quirrenbach, A.
Shiningayamwe, K.
Abdalla, H.
Specovius, A.
Maurin, G.
Lamanna, G.
Tanaka, T.
Arcaro, C.
White, R.
van Soelen, B.
Rowell, G.
Barnard, M.
Damascene Mbarubucyeye, J.
Ernenwein, J. P.
Hörbe, M.
Meyer, M.
Catalano, J.
Lemoine-Goumard, M.
Zdziarski, A.
Backes, M.
Żywucka, N.
Horns, D.
Malyshev, D.
Puehlhofer, G.
van Rensburg, C.
Dalgleish, H.
Marx, R.
Du Plessis, L.
Glicenstein, J. F.
Reichherzer, P.
Zouari, S.
Rieger, F.
Berge, D.
Terrier, R.
Dreyer, L.
Duffy, C.
Hofmann, W.
Kukec Mezek, G.
Ashkar, H.
Hattingh, S.
Luashvili, A.
Murach, T.
Tsuji, N.
Egberts, K.
Sol, H.
Kreter, M.
Holch, T.
Montanari, A.
Meintjes, P.
Katarzynski, K.
Panter, M.
Armand, C.
Jankowsky, F.
Völk, H. J.
Zanin, R.
Oberholzer, L. L.
Hinton, J.
Devin, J.
Thiersen, H.
Pita, S.
Sahakian, V.
Sanchez, D.
Reville, B.
Zech, A.
Schaefer, J.
Cangemi, F.
Steenkamp, R.
Klepser, S.
Schutte, H.
Donath, A.
Opis:
Highly extended gamma-ray emission around the Geminga pulsar was discovered by Milagro and verified by HAWC. Despite many observations with Imaging Atmospheric Cherenkov Telescopes (IACTs), detection of gamma-ray emission on angular scales exceeding the IACT field-of-view has proven challenging. Recent developments in analysis techniques have enabled the detection of significant emission around Geminga in archival data with H.E.S.S.. In 2019, further data on the Geminga region were obtained with an adapted observation strategy. Following the announcement of the detection of significant TeV emission around Geminga in archival data, in this contribution we present the detection in an independent dataset. New analysis results will be presented, and emphasis given to the technical challenges involved in observations of highly extended gamma-ray emission with IACTs.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Search for dark matter annihilation signals from unidentified Fermi-LAT objects with H.E.S.S.
Autorzy:
Schüssler, F.
Watson, J. J.
Batzofin, R.
Niemiec, J.
Holler, M.
Fegan, S.
Ruiz Velasco, E.
Simoni, R.
Fontaine, G.
Sinha, A.
Santangelo, A.
Nayerhoda, A.
Kluzniak, W.
Aharonian, F.
Kostunin, D.
Thorpe-Morgan, C.
Seyffert, A.
Katz, U.
Giavitto, G.
Romoli, C.
Wagner, S.
Yusafzai, A.
Gallant, Y.
Caroff, S.
Ohm, S.
Curlo, M.
Taylor, A.
Glawion, D.
Konno, R.
Lenain, J. P.
Marcowith, A.
Kasai, E.
Nakashima, K.
Takahashi, T.
Sasaki, M.
Wierzcholska, Alicja
Spir-Jacob, M.
Lohse, T.
Bony (de), M.
Steppa, C.
Levy, C.
Zhu, S.
Barbosa Martins, V.
Punch, M.
Vink, J.
Brose, R.
Reimer, O.
Boisson, C.
Casanova, S.
Werner, F.
Davies, J.
Huber, D.
Mohrmann, L.
Lemiere, A.
Senniappan, M.
Anguener, O.
Chambery, P.
Ona-Wilhelmi (de), E.
Prokhorov, D.
Venter, C.
Marchegiani, P.
Davids, H.
Bulik, T.
Böttcher, M.
Brun, F.
Huang, Z.
Panny, S.
Stegmann, C.
Tluczykont, M.
Naurois (de), M.
Ait-Benkhali, F.
Veh, J.
Marandon, V.
Haupt, M.
van Eldik, C.
Tuffs, R.
Armstrong, T.
Mares, A.
Stawarz, Łukasz
Poireau, V.
Salzmann, H.
Wong, Y. W.
Giunti, L.
Vincent, P.
Bernloehr, K.
Bylund, T.
Rudak, B.
Zmija, A.
Baghmanyan, V.
Bolmont, J.
Reimer, A.
Joshi, V.
Prokoph, H.
Fiasson, A.
Lypova, I.
Bi, B.
Tomankova, L.
Renaud, M.
Rueda Ricarte, H.
Uchiyama, Y.
Tavernier, T.
Spackman, H.
Khangulyan, D.
Yassin, H.
Moulin, E.
Kosack, K.
Majumdar, J.
Marti'i-Devesa, G.
Khelifi, B.
Feijen, K.
Zargaryan, D.
Mitchell, A.
Sailer, S.
Gabici, S.
Fuessling, M.
Funk, S.
Vasileiadis, G.
Muller, J.
Chen, A.
Peron, G.
Steinmassl, S.
Olivera-Nieto, L.
Spencer, S. T.
Jung, I.
Breuhaus, M.
Sun, L.
Tsirou, M.
Dmytriiev, A.
Davids, I. D.
Komin, N.
Hoischen, C.
Barnacka, Anna
Ostrowski, Michał
Chand, T. B.
Noel, Angel
Zacharias, M.
Doroshenko, V.
Djannati-Ataï, A.
Kundu, A.
van der Walt, J.
Morris, P.
Hermann, G.
Le Stum, S.
Jamrozy, Marek
Shapopi, J. N. S.
Schwanke, U.
Grondin, M. H.
Cotter, G.
Mackey, J.
Moderski, R.
Parsons, D.
Leuschner, F.
Moore, C.
Einecke, S.
Frans, L.
O'Brien, P.
Remy, Q.
Becherini, Y.
Fichet de Clairfontaine, G.
Quirrenbach, A.
Shiningayamwe, K.
Abdalla, H.
Specovius, A.
Maurin, G.
Lamanna, G.
Tanaka, T.
Arcaro, C.
White, R.
van Soelen, B.
Rowell, G.
Barnard, M.
Damascene Mbarubucyeye, J.
Ernenwein, J. P.
Hörbe, M.
Meyer, M.
Catalano, J.
Lemoine-Goumard, M.
Zdziarski, A.
Backes, M.
Żywucka, N.
Horns, D.
Malyshev, D.
Puehlhofer, G.
van Rensburg, C.
Dalgleish, H.
Marx, R.
Du Plessis, L.
Glicenstein, J. F.
Reichherzer, P.
Zouari, S.
Rieger, F.
Berge, D.
Terrier, R.
Dreyer, L.
Duffy, C.
Hofmann, W.
Kukec Mezek, G.
Ashkar, H.
Hattingh, S.
Luashvili, A.
Murach, T.
Tsuji, N.
Egberts, K.
Sol, H.
Kreter, M.
Montanari, A.
Holch, T.
Meintjes, P.
Katarzynski, K.
Panter, M.
Armand, C.
Jankowsky, F.
Völk, H. J.
Zanin, R.
Oberholzer, L. L.
Hinton, J.
Devin, J.
Thiersen, H.
Pita, S.
Sahakian, V.
Sanchez, D.
Reville, B.
Zech, A.
Schaefer, J.
Cangemi, F.
Steenkamp, R.
Klepser, S.
Schutte, H.
Donath, A.
Opis:
Cosmological N-body simulations show that Milky-Way-sized galaxies harbor a population of unmerged dark matter subhalos. These subhalos could shine in gamma rays and be eventually detected in gamma-ray surveys as unidentified sources. We search for very-high-energy (VHE, E $\geq$ 100~GeV) gamma-ray emission using H.E.S.S. observations carried out from a thorough selection of unidentified Fermi-LAT Objects (UFOs) as dark matter subhalo candidates. Provided that the dark matter mass is higher than a few hundred GeV, the emission of the UFOs can be well described by dark matter annihilation models. No significant VHE gamma-ray emission is detected in any UFO dataset nor in their combination. We, therefore, derive constraints on the product of the velocity-weighted annihilation cross-section $\left<\sigma v \right>$ by the J-factor on dark matter models describing the UFO emissions. Upper limits at 95% confidence level are derived on $\left<\sigma v \right>$ J in W$^{+}$W$^{-}$ and τ$^{+}$τ$^{-}$ annihilation channels for the TeV dark matter particles. Focusing on thermal WIMPs, strong constraints on the J-factors are obtained from H.E.S.S. observations. Adopting model-dependent predictions from cosmological N-body simulations on the J-factor distribution function for Milky Way (MW)-sized galaxies, only $\lesssim$ 0.3 ~TeV mass dark matter models marginally allow to explain observed UFO emission.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Evidence of 100 TeV γ-ray emission from HESS J1702-420 : a new PeVatron candidate
Autorzy:
Schüssler, F.
Watson, J. J.
Batzofin, R.
Niemiec, J.
Holler, M.
Fegan, S.
Ruiz Velasco, E.
Simoni, R.
Fontaine, G.
Sinha, A.
Santangelo, A.
Nayerhoda, A.
Kluzniak, W.
Aharonian, F.
Kostunin, D.
Thorpe-Morgan, C.
Seyffert, A.
Katz, U.
Giavitto, G.
Romoli, C.
Wagner, S.
Yusafzai, A.
Gallant, Y.
Caroff, S.
Ohm, S.
Curlo, M.
Taylor, A.
Glawion, D.
Konno, R.
Lenain, J. P.
Marcowith, A.
Kasai, E.
Nakashima, K.
Takahashi, T.
Sasaki, M.
Wierzcholska, Alicja
Spir-Jacob, M.
Lohse, T.
Bony (de), M.
Steppa, C.
Levy, C.
Zhu, S.
Barbosa Martins, V.
Punch, M.
Vink, J.
Brose, R.
Reimer, O.
Boisson, C.
Casanova, S.
Werner, F.
Davies, J.
Huber, D.
Mohrmann, L.
Lemiere, A.
Senniappan, M.
Anguener, O.
Chambery, P.
Ona-Wilhelmi (de), E.
Prokhorov, D.
Venter, C.
Marchegiani, P.
Davids, H.
Bulik, T.
Böttcher, M.
Brun, F.
Huang, Z.
Panny, S.
Stegmann, C.
Tluczykont, M.
Naurois (de), M.
Ait-Benkhali, F.
Veh, J.
Marandon, V.
Haupt, M.
van Eldik, C.
Tuffs, R.
Armstrong, T.
Mares, A.
Stawarz, Łukasz
Poireau, V.
Salzmann, H.
Wong, Y. W.
Giunti, L.
Vincent, P.
Bernloehr, K.
Bylund, T.
Rudak, B.
Zmija, A.
Baghmanyan, V.
Bolmont, J.
Reimer, A.
Joshi, V.
Prokoph, H.
Fiasson, A.
Lypova, I.
Bi, B.
Tomankova, L.
Renaud, M.
Rueda Ricarte, H.
Uchiyama, Y.
Tavernier, T.
Spackman, H.
Khangulyan, D.
Yassin, H.
Moulin, E.
Kosack, K.
Majumdar, J.
Marti'i-Devesa, G.
Khelifi, B.
Feijen, K.
Zargaryan, D.
Mitchell, A.
Sailer, S.
Gabici, S.
Fuessling, M.
Funk, S.
Vasileiadis, G.
Muller, J.
Chen, A.
Peron, G.
Steinmassl, S.
Olivera-Nieto, L.
Spencer, S. T.
Jung, I.
Breuhaus, M.
Sun, L.
Tsirou, M.
Dmytriiev, A.
Davids, I. D.
Komin, N.
Hoischen, C.
Barnacka, Anna
Ostrowski, Michał
Chand, T. B.
Noel, Angel
Zacharias, M.
Doroshenko, V.
Djannati-Ataï, A.
Kundu, A.
van der Walt, J.
Morris, P.
Hermann, G.
Le Stum, S.
Jamrozy, Marek
Shapopi, J. N. S.
Schwanke, U.
Grondin, M. H.
Cotter, G.
Mackey, J.
Moderski, R.
Parsons, D.
Leuschner, F.
Moore, C.
Einecke, S.
Frans, L.
O'Brien, P.
Remy, Q.
Becherini, Y.
Fichet de Clairfontaine, G.
Quirrenbach, A.
Shiningayamwe, K.
Abdalla, H.
Specovius, A.
Maurin, G.
Lamanna, G.
Tanaka, T.
Arcaro, C.
White, R.
van Soelen, B.
Rowell, G.
Barnard, M.
Damascene Mbarubucyeye, J.
Ernenwein, J. P.
Hörbe, M.
Meyer, M.
Catalano, J.
Lemoine-Goumard, M.
Zdziarski, A.
Backes, M.
Żywucka, N.
Horns, D.
Malyshev, D.
Puehlhofer, G.
van Rensburg, C.
Dalgleish, H.
Marx, R.
Du Plessis, L.
Glicenstein, J. F.
Reichherzer, P.
Zouari, S.
Rieger, F.
Berge, D.
Terrier, R.
Dreyer, L.
Duffy, C.
Hofmann, W.
Kukec Mezek, G.
Ashkar, H.
Hattingh, S.
Luashvili, A.
Murach, T.
Tsuji, N.
Egberts, K.
Sol, H.
Kreter, M.
Holch, T.
Montanari, A.
Meintjes, P.
Katarzynski, K.
Panter, M.
Armand, C.
Jankowsky, F.
Völk, H. J.
Zanin, R.
Oberholzer, L. L.
Hinton, J.
Devin, J.
Thiersen, H.
Pita, S.
Sahakian, V.
Sanchez, D.
Reville, B.
Zech, A.
Schaefer, J.
Cangemi, F.
Steenkamp, R.
Klepser, S.
Schutte, H.
Donath, A.
Opis:
The identification of active PeVatrons, hadronic particle accelerators reaching the knee of the cosmic-ray spectrum (at the energy of few PeV), is crucial to understand the origin of cosmic rays in the Galaxy. In this context, we report on new H.E.S.S. observations of the PeVatron candidate HESS J1702-420, which bring evidence for the presence of γ-rays up to 100 TeV. This is the first time in the history of H.E.S.S. that photons with such high energy are observed. Remarkably, the new deep observations allowed the discovery of a new γ-ray source component, called HESS J1702-420A, that was previously hidden under the bulk emission traditionally associated with HESS J1702-420. This new object has a power-law spectral slope < 2 and a γ-ray spectrum that, extending with no sign of curvature up to 100 TeV, makes it an excellent candidate site for the presence of PeV-energy cosmic rays. This discovery brings new information to the ongoing debate on the nature of the unidentified source HESSJ1702-420, and on the origin of Galactic cosmic rays.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Wyświetlanie 1-10 z 21

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