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We present the simultaneous Swift and Fermi observations of the bright GRB 100728A and its afterglow. The early X-ray emission is dominated by a vigorous flaring activity continuing until 1ks after the burst. In the same time interval, high-energy emission is significantly detected by the Fermi/Large Area Telescope. Marginal evidence ofGeV emission is observed up to later times. We discuss the broadband properties of this burst within both the internal and external shock scenarios, with a particular emphasis on the relation between X-ray flares, theGeV emission, and a continued long-duration central engine activity as their power source.

Detection of high-energy gamma-ray emission during the X-ray flaring activity in GRB 100728A / Abdo, Aa; Ackermann, M; Ajello, M; Baldini, L; Ballet, J; Barbiellini, G; Baring, Mg; Bastieri, D; Bechtol, K; Bellazzini, R; Berenji, B; Bhat, Pn; Bissaldi, Elisabetta; Blandford, Rd; Bonamente, E; Bonnell, J; Borgland, Aw; Bouvier, A; Bregeon, J; Brigida, M; Bruel, P; Buehler, R; Buson, S; Caliandro, Ga; Cameron, Ra; Caraveo, Pa; Casandjian, Jm; Cecchi, C; Charles, E; Chekhtman, A; Chiang, J; Ciprini, S; Claus, R; Connaughton, V; Conrad, J; Cutini, S; de Angelis, A; de Palma, F; Dermer, Cd; Silva, Ede; Drell, Ps; Dubois, R; Favuzzi, Cecilia; Fukazawa, Y; Fusco, P; Gargano, F; Gehrels, N; Germani, S; Giglietto, Nicola; Giommi, P; Giordano, F; Giroletti, M; Glanzman, T; Godfrey, G; Granot, J; Grenier, Ia; Guiriec, S; Hadasch, D; Hanabata, Y; Hughes, Re; Johannesson, G; Johnson, As; Kamae, T; Katagiri, H; Kataoka, J; Kerr, M; Knodlseder, J; Kuss, M; Lande, J; Latronico, L; Lee, Sh; Longo, F; Loparco, F; Lott, B; Lubrano, P; Mazziotta, Mn; Mcenery, Je; Meszaros, P; Michelson, Pf; Mizuno, T; Moiseev, Aa; Monzani, Me; Morselli, A; Moskalenko, Iv; Murgia, S; Nakamori, T; Naumann Godo, M; Nolan, Pl; Norris, Jp; Nuss, E; Ohsugi, T; Okumura, A; Omodei, N; Orlando, E; Paciesas, Ws; Pelassa, V; Pesce Rollins, M; Pierbattista, M; Piron, F; Porter, Ta; Racusin, Jl; Raino, S; Razzano, M; Razzaque, S; Reimer, A; Reimer, O; Reyes, Lc; Roth, M; Sadrozinski, Hfw; Sgro, C; Siskind, Ej; Smith, Pd; Sonbas, E; Spandre, G; Spinelli, P; Stamatikos, M; Strickman, Ms; Takahashi, H; Tanaka, T; Tanaka, Y; Thayer, Jg; Thayer, Jb; Torres, Df; Tosti, G; Troja, E; Uehara, T; Usher, Tl; Vandenbroucke, J; Vasileiou, V; Vianello, G; Vilchez, N; Vitale, V; von Kienlin, A; Waite, Ap; Wang, P; Winer, Bl; Wood, Ks; Yamazaki, R; Yang, Z; Ziegler, M; Piro, L.. - In: THE ASTROPHYSICAL JOURNAL LETTERS. - ISSN 2041-8205. - 734:2(2011). [10.1088/2041-8205/734/2/L27]

Detection of high-energy gamma-ray emission during the X-ray flaring activity in GRB 100728A

BISSALDI, Elisabetta;FAVUZZI, Cecilia;GIGLIETTO, Nicola;
2011-01-01

Abstract

We present the simultaneous Swift and Fermi observations of the bright GRB 100728A and its afterglow. The early X-ray emission is dominated by a vigorous flaring activity continuing until 1ks after the burst. In the same time interval, high-energy emission is significantly detected by the Fermi/Large Area Telescope. Marginal evidence ofGeV emission is observed up to later times. We discuss the broadband properties of this burst within both the internal and external shock scenarios, with a particular emphasis on the relation between X-ray flares, theGeV emission, and a continued long-duration central engine activity as their power source.
2011
Detection of high-energy gamma-ray emission during the X-ray flaring activity in GRB 100728A / Abdo, Aa; Ackermann, M; Ajello, M; Baldini, L; Ballet, J; Barbiellini, G; Baring, Mg; Bastieri, D; Bechtol, K; Bellazzini, R; Berenji, B; Bhat, Pn; Bissaldi, Elisabetta; Blandford, Rd; Bonamente, E; Bonnell, J; Borgland, Aw; Bouvier, A; Bregeon, J; Brigida, M; Bruel, P; Buehler, R; Buson, S; Caliandro, Ga; Cameron, Ra; Caraveo, Pa; Casandjian, Jm; Cecchi, C; Charles, E; Chekhtman, A; Chiang, J; Ciprini, S; Claus, R; Connaughton, V; Conrad, J; Cutini, S; de Angelis, A; de Palma, F; Dermer, Cd; Silva, Ede; Drell, Ps; Dubois, R; Favuzzi, Cecilia; Fukazawa, Y; Fusco, P; Gargano, F; Gehrels, N; Germani, S; Giglietto, Nicola; Giommi, P; Giordano, F; Giroletti, M; Glanzman, T; Godfrey, G; Granot, J; Grenier, Ia; Guiriec, S; Hadasch, D; Hanabata, Y; Hughes, Re; Johannesson, G; Johnson, As; Kamae, T; Katagiri, H; Kataoka, J; Kerr, M; Knodlseder, J; Kuss, M; Lande, J; Latronico, L; Lee, Sh; Longo, F; Loparco, F; Lott, B; Lubrano, P; Mazziotta, Mn; Mcenery, Je; Meszaros, P; Michelson, Pf; Mizuno, T; Moiseev, Aa; Monzani, Me; Morselli, A; Moskalenko, Iv; Murgia, S; Nakamori, T; Naumann Godo, M; Nolan, Pl; Norris, Jp; Nuss, E; Ohsugi, T; Okumura, A; Omodei, N; Orlando, E; Paciesas, Ws; Pelassa, V; Pesce Rollins, M; Pierbattista, M; Piron, F; Porter, Ta; Racusin, Jl; Raino, S; Razzano, M; Razzaque, S; Reimer, A; Reimer, O; Reyes, Lc; Roth, M; Sadrozinski, Hfw; Sgro, C; Siskind, Ej; Smith, Pd; Sonbas, E; Spandre, G; Spinelli, P; Stamatikos, M; Strickman, Ms; Takahashi, H; Tanaka, T; Tanaka, Y; Thayer, Jg; Thayer, Jb; Torres, Df; Tosti, G; Troja, E; Uehara, T; Usher, Tl; Vandenbroucke, J; Vasileiou, V; Vianello, G; Vilchez, N; Vitale, V; von Kienlin, A; Waite, Ap; Wang, P; Winer, Bl; Wood, Ks; Yamazaki, R; Yang, Z; Ziegler, M; Piro, L.. - In: THE ASTROPHYSICAL JOURNAL LETTERS. - ISSN 2041-8205. - 734:2(2011). [10.1088/2041-8205/734/2/L27]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/52137
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