2013ApJ...763...71A

Query : 2013ApJ...763...71A

2013ApJ...763...71A - Astrophys. J., 763, 71 (2013/February-1)

Multiwavelength observations of GRB 110731A: GeV emission from onset to afterglow.

ACKERMANN M., AJELLO M., ASANO K., BALDINI L., BARBIELLINI G., BARING M.G., BASTIERI D., BELLAZZINI R., BLANDFORD R.D., BONAMENTE E., BORGLAND A.W., BOTTACINI E., BREGEON J., BRIGIDA M., BRUEL P., BUEHLER R., BUSON S., CALIANDRO G.A., CAMERON R.A., CARAVEO P.A., CECCHI C., CHARLES E., CHAVES R.C.G., CHEKHTMAN A., CHIANG J., CIPRINI S., CLAUS R., COHEN-TANUGI J., CONRAD J., CUTINI S., D'AMMANDO F., DE ANGELIS A., DE PALMA F., DERMER C.D., DO COUTO E SILVA E., DRELL P.S., DRLICA-WAGNER A., FAVUZZI C., FEGAN S.J., FOCKE W.B., FRANCKOWIAK A., FUKAZAWA Y., FUSCO P., GARGANO F., GASPARRINI D., GEHRELS N., GIGLIETTO N., GIORDANO F., GIROLETTI M., GLANZMAN T., GODFREY G., GRANOT J., GREINER J., GRENIER I.A., GROVE J.E., GUIRIEC S., HADASCH D., HANABATA Y., HAYASHIDA M., HAYS E., HUGHES R.E., JACKSON M.S., JOGLER T., JOHANNESSON G., JOHNSON A.S., KNODLSEDER J., KOCEVSKI D., KUSS M., LANDE J., LARSSON S., LATRONICO L., LONGO F., LOPARCO F., LOVELLETTE M.N., LUBRANO P., MAZZIOTTA M.N., McENERY J.E., MEHAULT J., MESZAROS P., MICHELSON P.F., MITTHUMSIRI W., MIZUNO T., MONTE C., MONZANI M.E., MORETTI E., MORSELLI A., MOSKALENKO I.V., MURGIA S., NAUMANN-GODO M., NORRIS J.P., NUSS E., NYMARK T., OHNO M., OHSUGI T., OMODEI N., ORIENTI M., ORLANDO E., PANEQUE D., PERKINS J.S., PESCE-ROLLINS M., PIRON F., PIVATO G., RACUSIN J.L., RAINO S., RANDO R., RAZZANO M., RAZZAQUE S., REIMER A., REIMER O., ROMOLI C., ROTH M., RYDE F., SANCHEZ D.A., SGRO C., SISKIND E.J., SONBAS E., SPINELLI P., STAMATIKOS M., TAKAHASHI H., TANAKA T., THAYER J.G., THAYER J.B., TIBALDO L., TINIVELLA M., TOSTI G., TROJA E., USHER T.L., VANDENBROUCKE J., VASILEIOU V., VIANELLO G., VITALE V., WAITE A.P., WINER B.L., WOOD K.S., YANG Z., GRUBER D., BHAT P.N., BISSALDI E., BRIGGS M.S., BURGESS J.M., CONNAUGHTON V., FOLEY S., KIPPEN R.M., KOUVELIOTOU C., McBREEN S., McGLYNN S., PACIESAS W.S., PELASSA V., PREECE R., RAU A., VAN DER HORST A.J., VON KIENLIN A., KANN D.A., FILGAS R., KLOSE S., KRUHLER T., FUKUI A., SAKO T., TRISTRAM P.J., OATES S.R., UKWATTA T.N. and LITTLEJOHNS O.

Abstract (from CDS):

We report on the multiwavelength observations of the bright, long gamma-ray burst GRB 110731A, by the Fermi and Swift observatories, and by the MOA and GROND optical telescopes. The analysis of the prompt phase reveals that GRB 110731A shares many features with bright Large Area Telescope bursts observed by Fermi during the first three years on-orbit: a light curve with short time variability across the whole energy range during the prompt phase, delayed onset of the emission above 100 MeV, extra power-law component and temporally extended high-energy emission. In addition, this is the first GRB for which simultaneous GeV, X-ray, and optical data are available over multiple epochs beginning just after the trigger time and extending for more than 800 s, allowing temporal and spectral analysis in different epochs that favor emission from the forward shock in a wind-type medium. The observed temporally extended GeV emission is most likely part of the high-energy end of the afterglow emission. Both the single-zone pair transparency constraint for the prompt signal and the spectral and temporal analysis of the forward-shock afterglow emission independently lead to an estimate of the bulk Lorentz factor of the jet Γ ∼ 500-550.

Abstract Copyright: ∼

Journal keyword(s): gamma-ray burst: individual: GRB110731A

Simbad objects: 17

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Number of rows : 17
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
3 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
4 Fermi bn100728095 gB 05 55 02.00 -15 15 20.2           ~ 157 0
5 GRB 090328 gB 06 02 39.69 -41 52 55.1           ~ 194 1
6 SN 2003dh SN* 10 44 50.030 +21 31 18.15     16.2     SNIcpec 1261 1
7 Fermi bn090323002 gB 12 42 50.28 +17 03 11.9           ~ 244 1
8 Fermi bn100414097 gB 12 48 30.0 +08 41 35           ~ 136 0
9 GRB 080319B gB 14 31 41.04 +36 18 09.2           ~ 508 0
10 GRB 091003A gB 16 46 04.680 +36 37 31.08           ~ 135 0
11 Fermi bn090902462 gB 17 39 45.26 +27 19 28.1           ~ 440 0
12 Fermi bn110731465 gB 18 42 00.99 -28 32 13.8           ~ 193 0
13 GRB 110625A gB 19 06 55.85 +06 45 19.2           ~ 69 0
14 GRB 080514B gB 21 31 22.61 +00 42 30.3           ~ 69 0
15 Fermi bn090510016 G 22 14 12.6230 -26 34 58.550           ~ 548 0
16 GRB 081029 gB 23 07 06 -68 10.7           ~ 121 0
17 Fermi bn090926181 gB 23 33 36.18 -66 19 25.9           ~ 339 0

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