Autor: Fonseca, M. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: On some conjectures regarding tridiagonal matrices
Autorzy:: Fonseca, C. M.
Tematy:: tridiagonal matrices
determinant
permanent
Chebyshev polynomials of second kind
macierz trójdiagonalna
wielomiany Czebyszewa
wyznacznik; Pokaż więcej
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Powiązania:: https://bibliotekanauki.pl/articles/122982.pdf Link otwiera się w nowym oknie
Opis:: We discuss several conjectures proposed recently by A.Z. Küçük and M. Düz on the permanent of certain type of tridiagonal matrices. We recall some less known results on tridiagonal matrices and, at the same time, bring other results together to a common framework.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The Number of P-Vertices of Singular Acyclic Matrices: An Inverse Problem
Autorzy:: Du, Zhibin
da Fonseca, Carlos M.
Tematy:: trees
acyclic matrices
singular
multiplicity of eigenvalues
P-set
P-vertices; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Powiązania:: https://bibliotekanauki.pl/articles/31804164.pdf Link otwiera się w nowym oknie
Opis:: Let A be a real symmetric matrix. If after we delete a row and a column of the same index, the nullity increases by one, we call that index a P-vertex of A. When A is an n × n singular acyclic matrix, it is known that the maximum number of P-vertices is n − 2. If T is the underlying tree of A, we will show that for any integer number k ∈ {0, 1, . . ., n − 2}, there is a (singular) matrix whose graph is T and with k P-vertices. We will provide illustrative examples.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effect of Shot Peening With Glass Microspheres on the Fatigue Behavior of a Low Carbon Steel
Autorzy:: de Lacerda, J. C.
Pereira, I. R.
Costa, J. M. G.
Pinto, J. S.
Souza, H. F. M.
Fonseca, M. A.
Tematy:: fatigue
shot peening
Wöhler curve
low carbon steel
glass microspheres; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/352156.pdf Link otwiera się w nowym oknie
Opis:: The present work has the objective of studying the effect of shot peening with glass microspheres on SAE 1020 steel in its resistance to fatigue. Fatigue tests were carried out by rotary bending with load control and loading on balance in specimens with and without shot peening. A rotation speed of approximately 750 rpm (12.5 Hz) was employed in the fatigue tests. Vickers microhardness tests were performed in order to verify the surface hardening produced by shot peening with glass microspheres. Analysis of the steel surface and fatigue fractures was performed using scanning electron microscopy (SEM). Fatigue tests were performed in order to obtain S-N curves (Wöhler curves). It was observed that shot peening with glass microspheres improved the fatigue strength of the steel at high cycle.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Stratigraphy, palynology and organic geochemistry of the Devonian-Mississippian metasedimentary Albergaria-a-Velha Unit (Porto-Tomar shear zone, W Portugal)
Autorzy:: Machado, G.
Francu, E.
Vavrdová, M.
Flores, D.
Fonseca, P. E.
Rocha, F. T.
Pereira, L. C. G.
Gomes, A.
Fonseca, M.
Chaminé, H.
Tematy:: Mississippian
Late Devonian
Ossa-Morena Zone
Porto-Tomar shear zone
palynology
organic geochemistry; Pokaż więcej
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Powiązania:: https://bibliotekanauki.pl/articles/2059150.pdf Link otwiera się w nowym oknie
Opis:: The Albergaria-a-Velha Unit is one of several tectonostratigraphic out-of-sequence units of the metamorphic belt associated with the Porto-Tomar shear zone (Ossa-Morena Zone, W Portugal). It is composed of considerably deformed - very low grade - metasediments, namely shales, siltstones and rare fine sandstones. In this work we present new sedimentological and biostratigraphical data that suggest the Albergaria-a-Velha Unit was deposited from the (?)early Frasnian to the Serpukhovian in a distal marine environment, where turbiditic and basinal sedimentation prevailed. Palynofacies analysis and lithological data point to a gradual increase of terrestrial input, suggesting a prograding system. Detrital framework data is indicative of a stable cratonic sediment source area composed of low grade metamorphic rocks. The timing of the onset of the Porto-Tomar shear zone activity and consequently its influence on the sedimentation of this unit is discussed. Organic petrology and geochemistry data indicate that the Albergaria-a-Velha Unit is within the dry gas window in terms of hydrocarbon generation ranges.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Styrene oxidation by copper(II) complexes salen-type encapsulated into NaY zeolite
Katalityczne utlenianie styrenu w obecności kompleksów miedzi(II) typu salen osadzonych na zeolicie NaY
Autorzy:: Kuźniarska-Biernacka, I.
Carvalho, M. A.
Correia Neves, I.
Fonseca, A. M.
Lisińska-Czekaj, A.
Czekaj, D.
Tematy:: copper(II) complexes
Schiff base
NaY zeolite
kompleksy miedzi(II)
zasada Schiffa
zeolit NaY; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/352679.pdf Link otwiera się w nowym oknie
Opis:: The copper(II) complex with a Schiff-base salen-type ligand has been encapsulated in the nanopores of a NaY zeolite by using two different methodologies, the flexible ligand and in situ complex preparation methods. The encapsulated and non-encapsulated copper(II) complexes were screened as catalysts for styrene oxidation by using TBHP as the oxygen source in acetonitrile solvent. Under the optimized conditions, the catalysts exhibited moderate activity with higher selectivity to benzaldehyde. Both heterogeneous catalysts were found to be reusable after the catalytic cycle, but with some loss of activity.
Osadzenie kompleksu miedzi(II) z zasadą Schiffa typu salen na zeolicie typu NaY zostało przepowadzone za pomocą dwóch metod „flexible ligand" i „in situ”. Katalityczne właściwości otrzymanego kompleksu oraz jego heterogenizowanych analogów badano w reakcji utleniania styrenu w obecności TBHP. Jako rozpuszczalnik stosowano acetonitryl. Testowane katalizatory wykazują średnią aktywność katalityczną z tendencją wytwarzania aldehy du benzoesowego. Oba heterogenizowane katalizatory mogą być wykorzystywane ponownie bez utraty aktywności katalitycznych.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Styrene epoxidation over heterogeneous manganese (III) complexes
Autorzy:: Kuźniarska-Biernacka, I.
Lisinska-Czekaj, A.
Czekaj, D.
Alves, M. J.
Fonseca, A. M.
Neves, I. C.
Tematy:: styrene epoxidation
heterogeneous manganes; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/958207.pdf Link otwiera się w nowym oknie
Opis:: The manganes (III) complex functionalised with 2,3-dihydropyridazine has been encapsulated in the supercages of the NaY zeolite using two different procedures, flexible ligand and in situ complex. The parent zeolite and the encapsulated manganese (LTI) complexes were screened as catalysts for styrene oxidation by using t-BOOH as the oxygen source in acetonitrile. Under the optimized conditions, the catalysts exhibited moderate activity with high selectivity to benzaldehyde.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Multiwavelength study of the gravitationally lensed blazar QSO B0218+357 between 2016 and 2020
Autorzy:: Saturni, F. G.
Noda, K.
Di Venere, L.
Karjalainen, M.
Surić, T.
Ventura, S.
Pearson, T. J.
Bednarek, W.
Delgado Mendez, C.
Asano, K.
Šnidarić, I.
Oka, T.
Otero-Santos, J.
Hrupec, D.
Ribó, M.
Takahashi, M.
Will, M.
Artero, M.
Vovk, I.
Leone, F.
Lähteenmäki, A.
López-Oramas, A.
Readhead, A. C. S.
Bhattacharyya, W.
Gliwny, P.
Berti, A.
Barrio, J. A.
Molina, E.
Satalecka, K.
Delgado, J.
Temnikov, P.
Tammi, J.
Ansoldi, S.
Tosti, L.
Tutone, A.
Kobayashi, Y.
Saito, T.
Hodges, M.
Dazzi, F.
Dominis Prester, D.
Lamastra, A.
Maneva, G.
Barres de Almeida, U.
Biland, A.
Font, L.
Mazin, D.
Mallamaci, M.
Nilsson, K.
Fukami, S.
Babić, A.
Inada, T.
Sitarek, J.
Dorner, D.
Heckmann, L.
Reeves, R.
Godinović, N.
Bonnoli, G.
Iwamura, Y.
Depaoli, D.
Righi, C.
Fruck, C.
Majumdar, P.
Gaug, M.
Cikota, S.
Tornikoski, M.
Hovatta, T.
D'Elia, V.
Makariev, M.
Green, D.
Mirzoyan, R.
van Scherpenberg, J.
Fallah Ramazani, V.
Mender, S.
Fonseca, M. V.
Nigro, C.
Vigorito, C. F.
Jormanainen, J.
Prada Moroni, P. G.
Bernardini, E.
Giglietto, N.
Kiehlmann, S.
Strom, D.
Vazquez Acosta, M.
Ishio, K.
Hoang, J.
Nishijima, K.
Paneque, D.
Becerra González, J.
Vitale, V.
Suutarinen, S.
Lombardi, S.
Bellizzi, L.
Busetto, G.
Moretti, E.
Contreras, J. L.
Arbet Engels, A.
Delfino, M.
Wunderlich, C.
Covino, S.
Ferrara, G.
Max-Moerbeck, W.
Bigongiari, C.
Kerszberg, D.
Da Vela, P.
Herrera, J.
Green, J. G.
Paiano, S.
Palatiello, M.
Paoletti, R.
Persic, M.
Acciari, V. A.
Spolon, A.
Chai, Y.
Nozaki, S.
Pavletić, L.
Menchiari, S.
Verguilov, V.
Doro, M.
Cerruti, M.
Sahu, D. K.
Truzzi, S.
Do Souto Espiñeira, E.
Sahakyan, N.
Minev, M.
Sobczynska, D.
López-Moya, M.
Gasparyan, S.
Schleicher, B.
Hada, K.
Miranda, J. M.
Manganaro, M.
Teshima, M.
Rhode, W.
Colak, S. M.
Baquero, A.
Inoue, S.
Peñil, P.
De Lotto, B.
D'Amico, G.
Ceribella, G.
Batković, I.
Kajiwara, Y.
Mićanović, S.
Schweizer, T.
García López, R. J.
Longo, F.
Rico, J.
Lelas, D.
Jouvin, L.
Kushida, J.
Elsaesser, D.
Machado de Oliveira Fraga, B.
Stamerra, A.
Strzys, M.
Priyadarshi, C.
Miener, T.
Jiménez, I.
de Palma, F.
Prandini, E.
Paredes, J. M.
Hahn, A.
Bošnjak, Ž.
Hadasch, D.
Garczarczyk, M.
D'Ammando, F.
Perennes, C.
Terzić, T.
Giordano, F.
Rugliancich, A.
Puljak, I.
Moralejo, A.
Mannheim, K.
Carosi, R.
Tavecchio, F.
Donini, A.
Niinuma, K.
Zarić, D.
Loporchio, S.
De Angelis, A.
Miceli, D.
Neustroev, V.
Björklund, I.
Martínez, M.
Sakurai, S.
Fattorini, A.
Colombo, E.
Antonelli, L. A.
Di Pierro, F.
Lindfors, E.
Ubach, S.
Baack, D.
Mariotti, M.
Bernardos, M.
Maraschi, L.
Barnacka, Anna
López-Coto, R.
Moreno, V.
Ohtani, Y.
Schmidt, K.
Blanch, O.
Cortina, J.
Besenrieder, J.
Vanzo, G.
Maggio, C.
Chilingarian, A.
Morcuende, D.
Saha, L.
Hütten, M.
Suda, Y.
Kubo, H.
Opis:: We report multiwavelength observations of the gravitationally lensed blazar QSO B0218+357 in 2016–2020. Optical, X-ray, and GeV flares were detected. The contemporaneous MAGIC observations do not show significant very high energy (VHE; ≳100 GeV) gamma-ray emission. The lack of enhancement in radio emission measured by The Owens Valley Radio Observatory indicates the multizone nature of the emission from this object. We constrain the VHE duty cycle of the source to be <16 2014-like flares per year (95 per cent confidence). For the first time for this source, a broad-band low-state spectral energy distribution is constructed with a deep exposure up to the VHE range. A flux upper limit on the low-state VHE gamma-ray emission of an order of magnitude below that of the 2014 flare is determined. The X-ray data are used to fit the column density of (8.10 ± 0.93$_{stat}$) $\times$ 10$^{21}$ cm$^{-2}$ of the dust in the lensing galaxy. VLBI observations show a clear radio core and jet components in both lensed images, yet no significant movement of the components is seen. The radio measurements are used to model the source-lens-observer geometry and determine the magnifications and time delays for both components. The quiescent emission is modelled with the high-energy bump explained as a combination of synchrotron-self-Compton and external Compton emission from a region located outside of the broad-line region. The bulk of the low-energy emission is explained as originating from a tens-of-parsecs scale jet.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 8.

Tytuł:: MAGIC gamma-ray and multi-frequency observations of flat spectrum radio quasar PKS 1510−089 in early 2012
Autorzy:: Noda, K.
Zanin, R.
Bonnefoy, S.
Bangale, P.
Surić, T.
Manilla-Robles, A.
Carosi, A.
Bednarek, W.
Delgado Mendez, C.
Torres, D. F.
Zarpudin, B.
Bretz, T.
Hrupec, D.
La Barbera, A.
Ribó, M.
Treves, A.
Raiteri, C. M.
Schultz, C.
Villata, M.
Steinbring, T.
Lähteenmäki, A.
Chen, W. P.
Carnerero, M. I.
López-Oramas, A.
Readhead, A. C. S.
Satalecka, K.
Uellenbeck, M.
Barrio, J. A.
Temnikov, P.
Tammi, J.
Scapin, V.
Kellermann, H.
Marscher, A.
Partini, S.
Ansoldi, S.
López, M.
Verrecchia, F.
Aller, M. F.
Morozova, D. A.
Saito, T.
Orienti, M.
Dazzi, F.
Dominis Prester, D.
Doert, M.
Maneva, G.
Biland, A.
Barres de Almeida, U.
Font, L.
Mazin, D.
Shore, S. N.
Molina, S. N.
Nilsson, K.
Fuhrman, L.
Mallot, K.
Sitarek, J.
Dorner, D.
Nestoras, I.
Godinović, N.
Bonnoli, G.
Borracci, F.
Gurwell, M. A.
Lewandowska, N.
Fruck, C.
Kadenius, V.
Kurtanidze, S. O.
Hayashida, M.
Ferenc, D.
Gaug, M.
Ovcharov, E.
Tornikoski, M.
Hovatta, T.
Krause, J.
Konstantinova, T. S.
Overkemping, A.
Paredes-Fortuny, X.
Makariev, M.
Antoranz, P.
Marcote, B.
Takami, H.
Wagner, R. M.
Chigladze, R. A.
Mirzoyan, R.
Reinthal, R.
Fonseca, M. V.
Sillanpää, A.
Ungerechts, H.
Panwar, N.
Orito, R.
Prada Moroni, P. G.
Bernardini, E.
Herrero, A.
Jorstad, S.
Blinov, D. A.
Bozhilov, V.
Mundell, C.
Nishijima, K.
Domínguez, A.
Paneque, D.
Babic, A.
Stamatescu, V.
Toyama, T.
Lombardi, S.
Vercellone, S.
Contreras, J. L.
Eisenacher, D.
Menzel, U.
Buson, S.
Covino, S.
Max-Moerbeck, W.
Da Vela, P.
Colin, P.
Rodriguez Garcia, J.
Idec, W.
Herrera, J.
Palatiello, M.
Paiano, S.
Paoletti, R.
Persic, M.
Richards, J. L.
Preziuso, S.
Scalzotto, V.
Giroletti, M.
Einecke, S.
Zandanel, F.
Troitsky, I. S.
Doro, M.
Lucarelli, F.
D’Ammando, F.
Munar-Adrover, P.
Sobczynska, D.
Stawarz, Łukasz
González Muñoz, A.
Carmona, E.
Hose, J.
Miranda, J. M.
Gómez, J. L.
Teshima, M.
Tescaro, D.
Pavlova, Yu. V.
Rhode, W.
Kodani, K.
Rügamer, S.
Agudo, I.
Aller, H. D.
Nakajima, D.
De Lotto, B.
Aleksić, J.
Carreto Fidalgo, D.
Zensus, J. A.
Mankuzhiyil, N.
Schweizer, T.
García López, R. J.
Rico, J.
Larionova, E. G.
Lelas, D.
Sandrinelli, A.
Pittori, C.
Kopatskaya, E. N.
Kushida, J.
Elsaesser, D.
Vogler, P.
Stamerra, A.
Lorenz, E.
Farina, E.
Strzys, M.
Takalo, L.
Steele, I.
Hildebrand, D.
Casadio, C.
De Caneva, G.
Sun, S.
Thaele, J.
Prandini, E.
Angelakis, E.
Saggion, A.
Paredes, J. M.
Frantzen, K.
Gozzini, S. R.
Hadasch, D.
Garczarczyk, M.
Lozano, I.
Acosta-Pulido, J. A.
Spanier, F.
Terzić, T.
Snidaric, I.
Lin, H. C.
Puljak, I.
Moralejo, A.
Mannheim, K.
Konno, Y.
Metodieva, I.
Tavecchio, F.
Nowak, N.
Saito, K.
Prada, F.
De Angelis, A.
Kurtanidze, O. M.
Larionova, L. V.
Sievers, A.
Martínez, M.
Garrido Terrats, D.
Niedzwiecki, A.
Colombo, E.
Antonelli, L. A.
Lindfors, E.
Storz, J.
Larionov, V. M.
Mariotti, M.
Krichbaum, T. P.
Maraschi, L.
López-Coto, R.
Blanch, O.
Cortina, J.
Meucci, M.
Becerra, González J.
Tibolla, O.
Mokrushina, A. A.
Nikolashvili, M. G.
Kubo, H.
Opis:: Aims. Amongst more than fifty blazars detected in very high energy (VHE, E> 100 GeV) γ rays, only three belong to the subclass of flat spectrum radio quasars (FSRQs). The detection of FSRQs in the VHE range is challenging, mainly because of their soft spectra in the GeV-TeV regime. MAGIC observed PKS 1510−089 (z = 0.36) starting 2012 February 3 until April 3 during a high activity state in the high energy (HE, E> 100 MeV) $\gamma$-ray band observed by AGILE and Fermi. MAGIC observations result in the detection of a source with significance of 6.0 standard deviations (σ). We study the multi-frequency behaviour of the source at the epoch of MAGIC observation, collecting quasi-simultaneous data at radio and optical (GASP-WEBT and F-Gamma collaborations, REM, Steward, Perkins, Liverpool, OVRO, and VLBA telescopes), X-ray (Swift satellite), and HE $\gamma$-ray frequencies. Methods. We study the VHE $\gamma$-ray emission, together with the multi-frequency light curves, 43 GHz radio maps, and spectral energy distribution (SED) of the source. The quasi-simultaneous multi-frequency SED from the millimetre radio band to VHE γ rays is modelled with a one-zone inverse Compton model. We study two different origins of the seed photons for the inverse Compton scattering, namely the infrared torus and a slow sheath surrounding the jet around the Very Long Baseline Array (VLBA) core. Results. We find that the VHE $\gamma$-ray emission detected from PKS 1510−089 in 2012 February-April agrees with the previous VHE observations of the source from 2009 March-April. We find no statistically significant variability during the MAGIC observations on daily, weekly, or monthly time scales, while the other two known VHE FSRQs (3C 279 and PKS 1222+216) have shown daily scale to sub-hour variability. The $\gamma$-ray SED combining AGILE, Fermi and MAGIC data joins smoothly and shows no hint of a break. The multi-frequency light curves suggest a common origin for the millimetre radio and HE $\gamma$-ray emission, and the HE $\gamma$-ray flaring starts when the new component is ejected from the 43 GHz VLBA core and the studied SED models fit the data well. However, the fast HE $\gamma$-ray variability requires that within the modelled large emitting region, more compact regions must exist. We suggest that these observed signatures would be most naturally explained by a turbulent plasma flowing at a relativistic speed down the jet and crossing a standing conical shock.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 9.

Tytuł:: Multifrequency studies of the peculiar quasar 4C +21.35 during the 2010 flaring activity
Autorzy:: Treves, A.
Wood, D. L.
Gurwell, M. A.
Stamatescu, V.
Murgia, S.
Maneva, G.
Dermer, C. D.
Saggion, A.
Porter, T. A.
Lister, M. L.
Horan, D.
Mayer, M.
Carreto Fidalgo, D.
Bangale, P.
Vasileiou, V.
Hadasch, D.
Brigida, M.
Antoranz, P.
Nikolashvili, M. G.
Gozzini, S. R.
Ribó, M.
Giavitto, G.
Gehrels, N.
Morselli, A.
Prandini, E.
Homan, D. C.
Thayer, J. B.
Vitale, V.
Krause, J.
Preziuso, S.
Chekhtman, A.
Chiang, J.
Knödlseder, J.
Rainò, S.
Cecchi, C.
Miranda, J. M.
Ferenc, D.
Bonnoli, G.
Bonamente, E.
Kushida, J.
Usher, T. L.
Sanchez, D. A.
Colin, P.
Takahashi, T.
Lozano, I.
Ciprini, S.
Sun, S.
Efimova, N. V.
Finke, J.
López-Coto, R.
Orienti, M.
Michelson, P. F.
Focke, W. B.
Mariotti, M.
Dominis Prester, D.
Reinthal, R.
Guiriec, S.
Meucci, M.
Partini, S.
Iafrate, G.
Jordan, B.
Frantzen, K.
Mirzoyan, R.
Bednarek, W.
Favuzzi, C.
Blanch, O.
Reimer, O.
Fruck, C.
Moskalenko, I. V.
Tosti, G.
Storz, J.
Conrad, J.
Larsson, S.
Paredes-Fortuny, X.
Shore, S. N.
Caraveo, P. A.
Bretz, T.
Fukazawa, Y.
Dazzi, F.
Lindfors, E.
Schweizer, T.
Godfrey, G.
Stamerra, A.
Mannheim, K.
Hayashida, M.
Orito, R.
Terzić, T.
Carosi, A.
Blinov, D. A.
Overkemping, A.
Mazziotta, M. N.
Berger, K.
Persic, M.
Babic, A.
Terrats, D. Garrido
Caneva, G. De
Perkins, J. S.
Sillanpää, A.
Scapin, V.
Teshima, M.
Giordano, F.
D'Ammando, F.
Johnson, A. S.
Stawarz, Łukasz
Kadenius, V.
Hose, J.
López-Oramas, A.
Lorenz, E.
Drell, P. S.
Mizuno, T.
Troja, E.
Gasparrini, D.
Reimer, A.
Kovalev, Y. Y.
Hewitt, J. W.
Spinelli, P.
Garczarczyk, M.
Carmona, E.
Fusco, P.
Ajello, M.
Franckowiak, A.
Mazin, D.
Buehler, R.
Giroletti, M.
Kuss, M.
Surić, T.
Takami, H.
Larionov, V. M.
Sgrò, C.
Giglietto, N.
De Angelis, A.
Niedzwiecki, A.
Bellazzini, R.
Menzel, U.
Elsaesser, D.
Ansoldi, S.
Tibolla, O.
Toyama, T.
Paiano, S.
Piron, F.
Torres, D. F.
Spandre, G.
Donato, D.
Sitarek, J.
Snidaric, I.
Font, L.
Wagner, R. M.
Aller, M. F.
Ros, E.
Tornikoski, M.
Cavazzuti, E.
Pivato, G.
Rügamer, S.
Contreras, J. L.
Ohsugi, T.
Werner, M.
Godinović, N.
Herrero, A.
Cortina, J.
Domínguez, A.
Martínez, M.
Pesce-Rollins, M.
Rico, J.
Satalecka, K.
Nilsson, K.
Doert, M.
Vianello, G.
Bonnefoy, S.
Kubo, H.
Vela, P. Da
Lombardi, S.
Sobczynska, D.
Prada, F.
Thaele, J.
González, J. Becerra
Tescaro, D.
Antolini, E.
Marcote, B.
López, R. J. García
Einecke, S.
Kurtanidze, O. M.
Grenier, I. A.
Thayer, J. G.
Almeida, U. Barres de
Cohen-Tanugi, J.
Saito, K.
Lubrano, P.
Lelas, D.
Djorgovski, S. G.
Cutini, S.
Puljak, I.
Schulz, A.
Borracci, F.
Allafort, A.
Kodani, K.
Munar-Adrover, P.
Lähteenmäki, A.
Makariev, M.
Barbiellini, G.
Nakajima, D.
Temnikov, P.
Monzani, M. E.
Gargano, F.
Razzano, M.
Zandanel, F.
Moroni, P. G. Prada
Aleksić, J.
Winer, B. L.
Eisenacher, D.
Idec, W.
Scalzotto, V.
Vandenbroucke, J.
Wood, K. S.
Caliandro, G. A.
Lewandowska, N.
Nishijima, K.
Claus, R.
Tavecchio, F.
Steinbring, T.
Angelakis, E.
Loparco, F.
Covino, S.
Tinivella, M.
Moralejo, A.
Drake, A. J.
Orlando, E.
Bernardini, E.
Bregeon, J.
Silva, E. do Couto e
Fonseca, M. V.
Sigua, L. A.
Ackermann, M.
Mendez, C. Delgado
Savolainen, T.
Buson, S.
Takahashi, H.
Bissaldi, E.
Konno, Y.
Gaug, M.
Lovellette, M. N.
Mallot, K.
Chiaro, G.
Kellermann, H.
Palatiello, M.
Garcia, J. Rodriguez
Knoetig, M. L.
Hughes, R. E.
Nemmen, R.
Chaves, R. C. G.
Lotto, B. De
Mankuzhiyil, N.
Bock, R. K.
Nieppola, E.
Cameron, R. A.
Thompson, D. J.
Schultz, C.
Zanin, R.
Lande, J.
Colombo, E.
McEnery, J. E.
Dorner, D.
Paredes, J. M.
Muñoz, A. González
Antonelli, L. A.
Doro, M.
Hildebrand, D.
Barbera, A. La
Bastieri, D.
Maraschi, L.
Takalo, L.
Vogler, P.
Salvati, M.
Latronico, L.
Longo, F.
Biland, A.
Bruel, P.
de Palma, F.
López, M.
Paneque, D.
Saito, T.
Spanier, F.
Nowak, N.
Rhode, W.
Kopatskaya, E. N.
Hrupec, D.
Barrio, J. A.
Farina, E.
Paoletti, R.
Siskind, E. J.
Nuss, E.
Opis:: The discovery of rapidly variable Very High Energy (VHE; E > 100 GeV) gamma-ray emission from 4C +21.35 (PKS 1222+216) by MAGIC on 2010 June 17, triggered by the high activity detected by the Fermi Large Area Telescope (LAT) in high energy (HE; E > 100 MeV) gamma-rays, poses intriguing questions on the location of the gamma-ray emitting region in this flat spectrum radio quasar. We present multifrequency data of 4C +21.35 collected from centimeter to VHE during 2010 to investigate the properties of this source and discuss a possible emission model. The first hint of detection at VHE was observed by MAGIC on 2010 May 3, soon after a gamma-ray flare detected by Fermi-LAT that peaked on April 29. The same emission mechanism may therefore be responsible for both the HE and VHE emission during the 2010 flaring episodes. Two optical peaks were detected on 2010 April 20 and June 30, close in time but not simultaneous with the two gamma-ray peaks, while no clear connection was observed between the X-ray and gamma-ray emission. An increasing flux density was observed in radio and mm bands from the beginning of 2009, in accordance with the increasing gamma-ray activity observed by Fermi-LAT, and peaking on 2011 January 27 in the mm regime (230 GHz). We model the spectral energy distributions (SEDs) of 4C +21.35 for the two periods of the VHE detection and a quiescent state, using a one-zone model with the emission coming from a very compact region outside the broad line region. The three SEDs can be fit with a combination of synchrotron self-Compton and external Compton emission of seed photons from a dust torus, changing only the electron distribution parameters between the epochs. The fit of the optical/UV part of the spectrum for 2010 April 29 seems to favor an inner disk radius of < six gravitational radii, as one would expect from a prograde-rotating Kerr black hole.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 10.

Tytuł:: Nuclear astrophysics with radioactive ions at FAIR
Autorzy:: Trautmann, W.
Csatlós, M.
Dupont, E.
Litvinov, Y.
Neumann-Cosel, P. von
Labiche, M.
Spieker, M.
Rigollet, C.
Wagner, A.
Déchery, F.
Pandit, S.
Morcelle, V.
Reifarth, R.
Sohler, D.
Dueñas, J.
Ornelas, A.
Kulessa, Reinhard
Endres, J.
Körner, G.
Zerguerras, T.
Fernandez-Dominguez, B.
Uvarov, L.
Borge, M. G.
Naqvi, F.
Heftrich, T.
Lederer, C.
Savran, D.
Timar, J.
Jonson, B.
Schmitt, C.
Zgura, M.
Al-Khalili, J.
Zartova, I.
Uesaka, T.
Bertulani, C.
Körper, D.
Grigorenko, L.
Mahata, K.
Kratz, J.
Nikolski, E.
Stuhl, L.
Weick, H.
Pietri, S.
Ignatyuk, A.
Sümmerer, K.
Cherciu, M.
Herzberg, R.
Nociforo, C.
Jakobsson, B.
Gulyas, J.
Söderström, P.
Iwasa, N.
Nacher, E.
Casarejos, E.
Streicher, B.
Wieland, O.
Lazarus, I.
Bagchi, S.
Trivedi, T.
Cederkall, J.
Brambilla, S.
Catford, W.
Tengblad, O.
Pietralla, N.
Detistov, P.
Stan, E.
Taylor, J.
Tostevin, J.
Benlliure, J.
Kröll, T.
Petrache, C.
Boutachkov, P.
Fernandez, P. Diaz
Langanke, K.
Monago, J. Briz
Hammache, F.
Alkhomashi, N.
Heil, M.
Cresswell, J.
Johansson, H.
Davids, B.
Thornhill, J.
Khan, E.
Rauscher, T.
Panin, V.
Pivovarov, Y.
Derya, V.
Stevenson, P.
Rosado, J. Sánchez
Kuzmin, E.
Pawłowski, P.
Thoennessen, M.
Beceiro, S.
Maev, E.
Liberati, V.
Tornyi, T.
Parkar, V.
Schrock, P.
Gasparic, I.
Avdeichikov, V.
Gastineau, B.
Volknandt, M.
Elekes, Z.
Lemmon, R.
Jurado, B.
Romig, C.
Cederwall, B.
Zhukov, M.
Sanchez, J.
Terashima, S.
Aksouh, F.
Alvarez-Rodriguez, R.
Rastrepina, G.
Thungstrom, G.
Taieb, J.
Ilieva, S.
Shrivastava, A.
Schwengner, R.
Kelic-Heil, A.
Koloczek, A.
Woods, P.
Ritter, C.
Egelhof, P.
Togano, Y.
Saez, del Rio
Wimmer, C.
Sauerwein, A.
Dmitry, S.
Townsley, C.
Ershova, O.
Aumann, T.
Stanoiu, M.
Schmid, M. von
Bertini, D.
Gilbert, M.
Davinson, T.
Wells, D.
Udias, J.
Mengoni, D.
Paradela, C.
Bleis, T. Le
Boztosun, I.
Kogimtzis, M.
Yakorev, D.
Redondo, D. Galaviz
Garg, U.
Kräckmann, S.
Egorova, I.
Sakuta, S.
Belier, G.
Palit, R.
Scheit, H.
Roussel-Chomaz, P.
Röder, M.
Chartier, M.
Geissel, H.
Coleman-Smith, P.
Suda, T.
Velho, P.
Machado, J.
Stepantsov, S.
Najafi, M.
Mancusi, D.
Sidorchuk, S.
Ricciardi, M.
Heine, M.
Cardona, J. Zamora
Ershov, S.
Fiori, E.
Haiduc, M.
Gernhäuser, R.
Gannon, S.
Holl, M.
Salsac, M.
Tomohiro, U.
Junghans, A.
Nyman, G.
Movsesyan, A.
Doré, D.
Andreev, V.
Pereira, J.
Perea, A.
Tanihata, I.
Frutos, T. Rodriguez
Bishop, S.
Slobodan, D.
Pohl, M.
Schnorrenberger, L.
Münzenberg, G.
Camera, F.
Pickstone, S.
Singh, P.
Winfield, J. S.
Andrei, B.
Atar, L.
Fomichev, A.
Chatillon, A.
Typel, S.
Weigand, M.
Kurz, N.
Ivanov, M.
Gorshkov, A.
Paschalis, S.
Crespi, F.
Kalantar, N.
Kanungo, R.
Sampson, J.
Fetisov, A.
Barbieri, C.
Bendel, M.
Gourishetty, A.
Wimmer, K.
Ghosh, T.
Kiselev, O.
Berjillos, R.
Blumenfeld, Y.
Nilsson, T.
AlGhamdi, S.
Krupko, S.
Marganiec, J.
Bracco, A.
Enders, J.
Vikhrov, V.
Altstadt, S.
Nolan, P.
Sarriguren, P.
Ignatov, A.
Thomas, T.
Lemasson, A.
Marusov, V.
Langer, C.
Cortina-Gil, D.
Schmidt, S.
Boretzky, K.
Simpson, E.
Teubig, P.
Joshi, P.
Kumar, S.
Ribeiro, G.
Sonnabend, K.
Khanzadeev, A.
Simon, H.
Glorius, J.
Krücken, R.
Bonaccorso, A.
Sanjari, S.
Zuber, K.
Fonseca, M.
Gasques, L.
Friese, J.
Riisager, K.
Adachi, T.
Seddon, D.
Scheidenberger, C.
Silva, J.
Richter, A.
Wyss, R.
Strieder, F.
Perez, M. Martinez
Wiescher, M.
Chulkov, L.
Fraile, L.
Hass, M.
Vignote, J. Rodriguez
Vajta, Z.
Westerberg, L.
Stach, D.
Potlog, P.
AlGarawi, M.
Moreno, O.
Ter-Akopian, G.
Volkov, V.
Henriques, A.
Crespo, R.
Sherrill, B.
Herraiz, J. Lopez
Nakamura, T.
Uberseder, E.
Rout, P.
Krings, T.
Sarkar, M. Saha
Bloch, T.
Blasi, N.
Zieblinski, M.
Zilges, A.
Alkhazov, G.
Roy, S.
Botvina, A.
Winkel, M.
Bemmerer, D.
Hennig, A.
Million, B.
Löher, B.
Kresan, D.
Harakeh, M.
Bacri, C.
Beinrucker, C.
Petri, M.
Freer, M.
Alvarez-Pol, H.
Prokofiev, A.
Krumbholz, A.
Plag, R.
Benzoni, G.
Caesar, C.
Göbel, K.
Golubev, P.
Yavor, M.
Beck, C.
Zhdanov, A.
Caamano, M.
Wamers, F.
Novatsky, B.
Thies, R.
Boudard, A.
Rossi, D.
Rios, A.
Krasznahorkay, A.
DiJulio, D.
Takechi, M.
Kezzar, K.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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