AGILE detection of delayed gamma-ray emission from GRB 080514B

A. Giuliani; S. Mereghetti; F. Fornari; E. Del Monte; M. Feroci; M. Marisaldi; P. Esposito; F. Perotti; M. Tavani; A. Argan; G. Barbiellini; F. Boffelli; A. Bulgarelli; P. Caraveo; P. W. Cattaneo; W. Chen; E. Costa; F. D'Ammando; G. Di Cocco; I. Donnarumma; Y. Evangelista; M. Fiorini; F. Fuschino; M. Galli; F. Gianotti; C. Labanti; I. Lapshov; F. Lazzarotto; P. Lipari; F. Longo; A. Morselli; L. Pacciani; A. Pellizzoni; G. Piano; P. Picozza; M. Prest; G. Pucella; M. Rapisarda; A. Rappoldi; P. Soffitta; M. Trifoglio; A. Trois; E. Vallazza; S. Vercellone; D. Zanello; L. Salotti; S. Cutini; C. Pittori; B. Preger; P. Santolamazza; F. Verrecchia; N. Gehrels; K. Page; D. Burrows; A. Rossi; K. Hurley; I. Mitrofanov; W. Boynton

doi:10.1051/0004-6361:200810737

AGILE detection of delayed gamma-ray emission from GRB 080514B

A. Giuliani, S. Mereghetti, F. Fornari, E. Del Monte, M. Feroci, M. Marisaldi, P. Esposito, F. Perotti, M. Tavani, A. Argan, G. Barbiellini, F. Boffelli, A. Bulgarelli, P. Caraveo, P. W. Cattaneo, W. Chen, E. Costa, F. D'Ammando, G. Di Cocco, I. DonnarummaY. Evangelista, M. Fiorini, F. Fuschino, M. Galli, F. Gianotti, C. Labanti, I. Lapshov, F. Lazzarotto, P. Lipari, F. Longo, A. Morselli, L. Pacciani, A. Pellizzoni, G. Piano, P. Picozza, M. Prest, G. Pucella, M. Rapisarda, A. Rappoldi, P. Soffitta, M. Trifoglio, A. Trois, E. Vallazza, S. Vercellone, D. Zanello, L. Salotti, S. Cutini, C. Pittori, B. Preger, P. Santolamazza, F. Verrecchia, N. Gehrels, K. Page, D. Burrows, A. Rossi, K. Hurley, I. Mitrofanov, W. Boynton

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Abstract

GRB 080514B is the first gamma ray burst (GRB), since the time of EGRET, for which individual photons of energy above several tens of MeV have been detected with a pair-conversion tracker telescope. This burst was discovered with the Italian AGILE gamma-ray satellite. The GRB was localized by a cooperation between AGILE and the interplanetary network (IPN). The gamma-ray imager (GRID) estimate of the position, obtained before the SuperAGILE-IPN localization, is found to be consistent with the burst position. The hard X-ray emission observed by SuperAGILE lasted about 7 s, while there is evidence that the emission above 30 MeV extends for a longer duration (at least 13 s). Similar behavior has been seen from a few other GRBs observed with EGRET. However, during the brightest phases, the latter measurements were affected by instrumental dead time effects, resulting in only lower limits to the burst intensity. Thanks to the small dead time of the AGILE/GRID we could assess that in the case of GRB 080514B the gamma-ray to X-ray flux ratio changes significantly between the prompt and extended emission phase.

Original language	English (US)
Pages (from-to)	L25-L28
Journal	Astronomy and astrophysics
Volume	491
Issue number	2
DOIs	https://doi.org/10.1051/0004-6361:200810737
State	Published - Nov 2008
Externally published	Yes

Keywords

Gamma rays: bursts

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1051/0004-6361:200810737

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Giuliani, A., Mereghetti, S., Fornari, F., Del Monte, E., Feroci, M., Marisaldi, M., Esposito, P., Perotti, F., Tavani, M., Argan, A., Barbiellini, G., Boffelli, F., Bulgarelli, A., Caraveo, P., Cattaneo, P. W., Chen, W., Costa, E., D'Ammando, F., Di Cocco, G., ... Boynton, W. (2008). AGILE detection of delayed gamma-ray emission from GRB 080514B. Astronomy and astrophysics, 491(2), L25-L28. https://doi.org/10.1051/0004-6361:200810737

Giuliani, A, Mereghetti, S, Fornari, F, Del Monte, E, Feroci, M, Marisaldi, M, Esposito, P, Perotti, F, Tavani, M, Argan, A, Barbiellini, G, Boffelli, F, Bulgarelli, A, Caraveo, P, Cattaneo, PW, Chen, W, Costa, E, D'Ammando, F, Di Cocco, G, Donnarumma, I, Evangelista, Y, Fiorini, M, Fuschino, F, Galli, M, Gianotti, F, Labanti, C, Lapshov, I, Lazzarotto, F, Lipari, P, Longo, F, Morselli, A, Pacciani, L, Pellizzoni, A, Piano, G, Picozza, P, Prest, M, Pucella, G, Rapisarda, M, Rappoldi, A, Soffitta, P, Trifoglio, M, Trois, A, Vallazza, E, Vercellone, S, Zanello, D, Salotti, L, Cutini, S, Pittori, C, Preger, B, Santolamazza, P, Verrecchia, F, Gehrels, N, Page, K, Burrows, D, Rossi, A, Hurley, K, Mitrofanov, I & Boynton, W 2008, 'AGILE detection of delayed gamma-ray emission from GRB 080514B', Astronomy and astrophysics, vol. 491, no. 2, pp. L25-L28. https://doi.org/10.1051/0004-6361:200810737

@article{d92ca6400af64d1c99e084a57c3128af,

title = "AGILE detection of delayed gamma-ray emission from GRB 080514B",

abstract = "GRB 080514B is the first gamma ray burst (GRB), since the time of EGRET, for which individual photons of energy above several tens of MeV have been detected with a pair-conversion tracker telescope. This burst was discovered with the Italian AGILE gamma-ray satellite. The GRB was localized by a cooperation between AGILE and the interplanetary network (IPN). The gamma-ray imager (GRID) estimate of the position, obtained before the SuperAGILE-IPN localization, is found to be consistent with the burst position. The hard X-ray emission observed by SuperAGILE lasted about 7 s, while there is evidence that the emission above 30 MeV extends for a longer duration (at least 13 s). Similar behavior has been seen from a few other GRBs observed with EGRET. However, during the brightest phases, the latter measurements were affected by instrumental dead time effects, resulting in only lower limits to the burst intensity. Thanks to the small dead time of the AGILE/GRID we could assess that in the case of GRB 080514B the gamma-ray to X-ray flux ratio changes significantly between the prompt and extended emission phase.",

keywords = "Gamma rays: bursts",

author = "A. Giuliani and S. Mereghetti and F. Fornari and {Del Monte}, E. and M. Feroci and M. Marisaldi and P. Esposito and F. Perotti and M. Tavani and A. Argan and G. Barbiellini and F. Boffelli and A. Bulgarelli and P. Caraveo and Cattaneo, {P. W.} and W. Chen and E. Costa and F. D'Ammando and {Di Cocco}, G. and I. Donnarumma and Y. Evangelista and M. Fiorini and F. Fuschino and M. Galli and F. Gianotti and C. Labanti and I. Lapshov and F. Lazzarotto and P. Lipari and F. Longo and A. Morselli and L. Pacciani and A. Pellizzoni and G. Piano and P. Picozza and M. Prest and G. Pucella and M. Rapisarda and A. Rappoldi and P. Soffitta and M. Trifoglio and A. Trois and E. Vallazza and S. Vercellone and D. Zanello and L. Salotti and S. Cutini and C. Pittori and B. Preger and P. Santolamazza and F. Verrecchia and N. Gehrels and K. Page and D. Burrows and A. Rossi and K. Hurley and I. Mitrofanov and W. Boynton",

year = "2008",

month = nov,

doi = "10.1051/0004-6361:200810737",

language = "English (US)",

volume = "491",

pages = "L25--L28",

journal = "Astronomy and astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "2",

}

TY - JOUR

T1 - AGILE detection of delayed gamma-ray emission from GRB 080514B

AU - Giuliani, A.

AU - Mereghetti, S.

AU - Fornari, F.

AU - Del Monte, E.

AU - Feroci, M.

AU - Marisaldi, M.

AU - Esposito, P.

AU - Perotti, F.

AU - Tavani, M.

AU - Argan, A.

AU - Barbiellini, G.

AU - Boffelli, F.

AU - Bulgarelli, A.

AU - Caraveo, P.

AU - Cattaneo, P. W.

AU - Chen, W.

AU - Costa, E.

AU - D'Ammando, F.

AU - Di Cocco, G.

AU - Donnarumma, I.

AU - Evangelista, Y.

AU - Fiorini, M.

AU - Fuschino, F.

AU - Galli, M.

AU - Gianotti, F.

AU - Labanti, C.

AU - Lapshov, I.

AU - Lazzarotto, F.

AU - Lipari, P.

AU - Longo, F.

AU - Morselli, A.

AU - Pacciani, L.

AU - Pellizzoni, A.

AU - Piano, G.

AU - Picozza, P.

AU - Prest, M.

AU - Pucella, G.

AU - Rapisarda, M.

AU - Rappoldi, A.

AU - Soffitta, P.

AU - Trifoglio, M.

AU - Trois, A.

AU - Vallazza, E.

AU - Vercellone, S.

AU - Zanello, D.

AU - Salotti, L.

AU - Cutini, S.

AU - Pittori, C.

AU - Preger, B.

AU - Santolamazza, P.

AU - Verrecchia, F.

AU - Gehrels, N.

AU - Page, K.

AU - Burrows, D.

AU - Rossi, A.

AU - Hurley, K.

AU - Mitrofanov, I.

AU - Boynton, W.

PY - 2008/11

Y1 - 2008/11

N2 - GRB 080514B is the first gamma ray burst (GRB), since the time of EGRET, for which individual photons of energy above several tens of MeV have been detected with a pair-conversion tracker telescope. This burst was discovered with the Italian AGILE gamma-ray satellite. The GRB was localized by a cooperation between AGILE and the interplanetary network (IPN). The gamma-ray imager (GRID) estimate of the position, obtained before the SuperAGILE-IPN localization, is found to be consistent with the burst position. The hard X-ray emission observed by SuperAGILE lasted about 7 s, while there is evidence that the emission above 30 MeV extends for a longer duration (at least 13 s). Similar behavior has been seen from a few other GRBs observed with EGRET. However, during the brightest phases, the latter measurements were affected by instrumental dead time effects, resulting in only lower limits to the burst intensity. Thanks to the small dead time of the AGILE/GRID we could assess that in the case of GRB 080514B the gamma-ray to X-ray flux ratio changes significantly between the prompt and extended emission phase.

AB - GRB 080514B is the first gamma ray burst (GRB), since the time of EGRET, for which individual photons of energy above several tens of MeV have been detected with a pair-conversion tracker telescope. This burst was discovered with the Italian AGILE gamma-ray satellite. The GRB was localized by a cooperation between AGILE and the interplanetary network (IPN). The gamma-ray imager (GRID) estimate of the position, obtained before the SuperAGILE-IPN localization, is found to be consistent with the burst position. The hard X-ray emission observed by SuperAGILE lasted about 7 s, while there is evidence that the emission above 30 MeV extends for a longer duration (at least 13 s). Similar behavior has been seen from a few other GRBs observed with EGRET. However, during the brightest phases, the latter measurements were affected by instrumental dead time effects, resulting in only lower limits to the burst intensity. Thanks to the small dead time of the AGILE/GRID we could assess that in the case of GRB 080514B the gamma-ray to X-ray flux ratio changes significantly between the prompt and extended emission phase.

KW - Gamma rays: bursts

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UR - http://www.scopus.com/inward/citedby.url?scp=57049166640&partnerID=8YFLogxK

U2 - 10.1051/0004-6361:200810737

DO - 10.1051/0004-6361:200810737

M3 - Article

AN - SCOPUS:57049166640

SN - 0004-6361

VL - 491

SP - L25-L28

JO - Astronomy and astrophysics

JF - Astronomy and astrophysics

IS - 2

ER -

AGILE detection of delayed gamma-ray emission from GRB 080514B

Abstract

Keywords

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