2002A&A...390...81A


Query : 2002A&A...390...81A

2002A&A...390...81A - Astronomy and Astrophysics, volume 390, 81-89 (2002/7-4)

Intrinsic spectra and energetics of BeppoSAX Gamma-Ray Bursts with known redshifts.

AMATI L., FRONTERA F., TAVANI M., IN'T ZAND J.J.M., ANTONELLI A., COSTA E., FEROCI M., GUIDORZI C., HEISE J., MASETTI N., MONTANARI E., NICASTRO L., PALAZZI E., PIAN E., PIRO L. and SOFFITTA P.

Abstract (from CDS):

We present the main results of a study of spectral and energetics properties of twelve gamma-ray bursts (GRBs) with redshift estimates. All GRBs in our sample were detected by BeppoSAX in a broad energy range (2-700keV). From the redshift estimates and the good-quality BeppoSAX time-integrated spectra we deduce the main properties of GRBs in their cosmological rest frames. All spectra in our sample are satisfactorily represented by the Band model, with no significant soft X-ray excesses or spectral absorptions. We find a positive correlation between the estimated total (isotropic) energies in the 1-10000keV energy range (Erad) and redshifts z. Interestingly, more luminous GRBs are characterized also by larger peak energies Eps of their EF(E) spectra. Furthermore, more distant GRBs appear to be systematically harder in the X-ray band compared to GRBs with lower redshifts. We discuss how selection and data truncation effects could bias our results and give possible explanations for the correlations that we found.

Abstract Copyright:

Journal keyword(s): gamma-rays: bursts - gamma rays: observations - X-rays: general

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 GRB 970228 gB 05 01 46.7 +11 46 53           ~ 630 1
2 GRB 990705 gB 05 09 54.5 -72 07 53           ~ 217 1
3 GRB 970508 gB 06 53 49.2 +79 16 19           ~ 852 1
4 GRB 980329 gB 07 02 41 +38 50.7           ~ 266 1
5 GRB 980326 gB 08 36 34.3 -18 51 24           ~ 259 0
6 GRB 980613 gB 10 17 57.8 +71 27 26           ~ 199 1
7 GRB 971214 gB 11 56 26.4 +65 12 01           ~ 436 1
8 GRB 990510 gB 13 38 07.64 -80 29 48.8           ~ 472 1
9 GRB 010222 G 14 52 12.5 +43 01 06           ~ 339 1
10 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 971 1
11 GRB 000214 gB 18 54 27.0 -66 27 30           ~ 90 0
12 GRB 990712 gB 22 31 53.061 -73 24 28.58           ~ 254 1

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2021.10.26-03:28:49

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