2011A&A...535A.120D

Query : 2011A&A...535A.120D

2011A&A...535A.120D - Astronomy and Astrophysics, volume 535A120-120 (2011/11-1)

The AGILE observations of the hard and bright GRB 100724B.

DEL MONTE E., BARBIELLINI G., DONNARUMMA I., FUSCHINO F., GIULIANI A., LONGO F., MARISALDI M., PUCELLA G., TAVANI M., TRIFOGLIO M., TROIS A., ARGAN A., BULGARELLI A., CARAVEO P., CATTANEO P.W., CHEN A.W., COSTA E., D'AMMANDO F., DI COCCO G., EVANGELISTA Y., FEROCI M., GALLI M., GIANOTTI F., LABANTI C., LAPSHOV I., LAZZAROTTO F., LIPARI P., MEREGHETTI S., MORETTI E., MORSELLI A., PACCIANI L., PELLIZZONI A., PEROTTI F., PIANO G., PICOZZA P., PILIA M., PREST M., RAPISARDA M., RAPPOLDI A., SABATINI S., SOFFITTA P., STRIANI E., VALLAZZA E., VERCELLONE S., VITTORINI V., ANTONELLI L.A., CUTINI S., PITTORI C., SANTOLAMAZZA P., VERRECCHIA F., GIOMMI P. and SALOTTI L.

Abstract (from CDS):

The observation of gamma ray bursts (GRBs) in the gamma ray band has been advanced by the AGILE and Fermi satellites after the era of the Compton Gamma-Ray Observatory. AGILE and Fermi are showing that the GeV-bright GRBs share a set of common features, particularly the high fluence from the keV up to the GeV energy bands, the high value of the minimum Lorentz factor, an extended emission of gamma rays, which is often delayed with respect to lower energies, and finally the possible multiple spectral components. GRB 100724B, localised in a joint effort by Fermi and the InterPlanetary Newtork, is the brightest burst detected in gamma rays so far by AGILE. Characteristic features of GRB 100724B are the simultaneous emissions at MeV and GeV, without delayed onset or any time lag as shown by the analysis of the cross correlation function, and the significant spectral evolution in hard X-rays over the event duration. In this paper we show the analysis of the AGILE data of GRB 100724B and discuss its features in the context of the bursts observed so far in gamma rays and the recently proposed models.

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Journal keyword(s): gamma rays: general - gamma-ray burst: individual: GRB 100724B

Simbad objects: 15

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Number of rows : 15
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 3B 940217 gB 01 56.3 +04 33           ~ 204 0
2 1B 910503 gB 05 49.8 +38 44           ~ 133 0
3 Fermi bn080928628 gB 06 20 16.85 -55 11 59.3           ~ 187 0
4 3B 940301 gB 06 54.0 +64 21           ~ 70 0
5 GRB 080916C gB 07 59 23.24 -56 38 16.8           ~ 386 0
6 2B 920622 gB 10 48.4 +47 10           ~ 54 0
7 2B 930131 gB 12 08.2 -08 14           ~ 127 0
8 GRB 100724A gB 12 58 10.38 -11 06 09.3           ~ 198 0
9 Fermi bn090217206 gB 13 40 -08.4           ~ 56 0
10 GRB 080825C gB 15 28.8 -04 54           ~ 71 0
11 Fermi bn090902462 gB 17 39 45.26 +27 19 28.1           ~ 440 0
12 1B 910601 gB 20 40.5 +32 20           ~ 94 0
13 GRB 080514B gB 21 31 22.61 +00 42 30.3           ~ 69 0
14 Fermi bn090510016 G 22 14 12.6230 -26 34 58.550           ~ 548 0
15 1B 910814 gB 23 05.4 +30 26           ~ 81 0

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