2011A&A...529A.142R


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.19CET10:16:20

2011A&A...529A.142R - Astronomy and Astrophysics, volume 529A, 142-142 (2011/5-1)

The Swift/Fermi GRB 080928 from 1 eV to 150 keV.

ROSSI A., SCHULZE S., KLOSE S., KANN D.A., RAU A., KRIMM H.A., JOHANNESSON G., PANAITESCU A., YUAN F., FERRERO P., KRUEHLER T., GREINER J., SCHADY P., PANDEY S.B., AMATI L., AFONSO P.M.J., AKERLOF C.W., ARNOLD L.A., CLEMENS C., FILGAS R., HARTMANN D.H., KUEPCUE YOLDAS A., McBREEN S., McKAY T.A., NICUESA GUELBENZU A., OLIVARES F.E., PACIESAS B., RYKOFF E.S., SZOKOLY G., UPDIKE A.C. and YOLDAS A.

Abstract (from CDS):

We present the results of a comprehensive study of the gamma-ray burst 080928 and of its afterglow. GRB 080928 was a long burst detected by Swift/BAT and Fermi/GBM. It is one of the exceptional cases where optical emission had already been detected when the GRB itself was still radiating in the gamma-ray band. For nearly 100s simultaneous optical, X-ray and gamma-ray data provide a coverage of the spectral energy distribution of the transient source from about 1eV to 150keV. In particular, we show that the SED during the main prompt emission phase agrees with synchrotron radiation. We constructed the optical/near-infrared light curve and the spectral energy distribution based on Swift/UVOT, ROTSE-IIIa (Australia), and GROND (La Silla) data and compared it to the X-ray light curve retrieved from the Swift/XRT repository. We show that its bumpy shape can be modeled by multiple energy-injections into the forward shock. Furthermore, we investigate whether the temporal and spectral evolution of the tail emission of the first strong flare seen in the early X-ray light curve can be explained by large-angle emission (LAE). We find that a nonstandard LAE model is required to explain the observations. Finally, we report on the results of our search for the GRB host galaxy, for which only a deep upper limit can be provided.

Abstract Copyright:

Journal keyword(s): gamma-ray burst: individual: GRB 080928

Nomenclature: Fig. 10, Table 6: [RSK2011] GN (Nos G1-G3). Fig. 2, Table A.4: [RSK2011] NN (Nos 1-12).

Simbad objects: 20

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Number of rows : 20

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 GRB 041219 gB 00 24 27.7 +62 50 34           ~ 200 1
2 GRB 071031 gB 00 25 37.40 -58 03 33.9           ~ 138 0
3 GRB 070802 gB 02 27 35.91 -55 31 39.1           ~ 132 0
4 GRB 060906 gB 02 43 00.900 +30 21 42.12     19.84     ~ 113 0
5 GRB 060904B gB 03 52 50.520 -00 43 30.61 18.27 19.14 18.37     ~ 159 0
6 GRB 060124 gB 05 08 25.900 +69 44 26.98   18.91 17.35     ~ 231 0
7 [RSK2011] G3 G 06 20 13.35 -55 11 54.9           ~ 1 0
8 GRB 080928 gB 06 20 16.85 -55 11 59.3           ~ 126 1
9 [RSK2011] G1 G 06 20 16.96 -55 11 56.6           ~ 2 0
10 [RSK2011] G2 G 06 20 16.99 -55 11 58.0           ~ 2 0
11 GRB 080916C gB 07 59 23.24 -56 38 16.8           ~ 305 0
12 GRB 050502B gB 09 30 10.024 +16 59 48.07           ~ 146 0
13 GRB 061121 gB 09 48 54.570 -13 11 42.68 17.19 17.71 17.02     ~ 278 0
14 GRB 050802 gB 14 37 05.820 +27 47 12.62 16.85 17.38 16.97     ~ 152 0
15 GRB 060714 gB 15 11 26.450 -06 33 58.30   20.21 18.54     ~ 159 0
16 GRB 060526 gB 15 31 18.360 +00 17 04.90   18.31 17.16     ~ 229 0
17 GRB 080603A gB 18 37 37.95 +62 44 39.6           ~ 68 0
18 GRB 100425A gB 19 56 47.16 -26 25 50.5           ~ 56 0
19 GRB 050820A gB 22 29 38.110 +19 33 37.10 18.33 19.00 18.47     ~ 331 1
20 GRB 051111A gB 23 12 33.170 +18 22 28.80 19.77 20.08 19.50     ~ 183 1

    Equat.    Gal    SGal    Ecl

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2019.11.19-10:16:20

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