2003ApJ...593L..15V

Query : 2003ApJ...593L..15V

2003ApJ...593L..15V - Astrophys. J., 593, L15-L18 (2003/August-2)

Observational evidence for a correlation between peak luminosities and beaming in gamma-ray bursts.

VAN PUTTEN M.H.P.M. and REGIMBAU T.

Abstract (from CDS):

We calculate the unseen-but-true gamma-ray burst (GRB) event rate from a current flux-limited sample of 33 GRBs with individually measured redshifts. We consider a GRB event rate that is proportional to the star formation rate, in view of the GRB-supernovae association in SN 1998bw and GRB 030329. By fitting a lognormal distribution of GRB peak luminosities, we find a ratio 1/fr≃450 for the true-to-observed GRB event rates. This provides an independent derivation of the GRB beaming factor 1/fb≃500 obtained by Frail et al. from sources with standard GRB energies. We discuss applications to GRB 980425.

Abstract Copyright: ∼

Journal keyword(s): Gamma Rays: Bursts

CDS comments: Table 1 : the redshift given for GB 000301C is that of GB 000214 and vice versa.

Simbad objects: 33

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Number of rows : 33
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 GRB 021004 gB 00 26 54.68 +18 55 41.6           ~ 560 0
2 GRB 000210 gB 01 59 15 -40 40.0           ~ 175 0
3 GRB 000911 gB 02 18 42 +07 48.0           ~ 163 0
4 GRB 970228 gB 05 01 46.7 +11 46 53           ~ 650 1
5 GRB 991216 gB 05 09 31.2983 +11 17 07.262           ~ 430 0
6 GRB 990705 gB 05 09 54.5 -72 07 53           ~ 229 1
7 GRB 000131 gB 06 13 31.08 -51 56 41.7     24.7     ~ 172 1
8 GRB 970508 gB 06 53 49.2 +79 16 19           ~ 883 1
9 SN 2002lt SN* 08 08 59.858 +06 43 37.52           SNIc: 363 1
10 GRB 980613 gB 10 17 57.8 +71 27 26           ~ 204 1
11 SN 2003dh SN* 10 44 50.030 +21 31 18.15     16.2     SNIcpec 1261 1
12 GRB 030323 gB 11 06 09.4 -21 46 13           ~ 138 1
13 GRB 011211 gB 11 15 16 -21 56.0           ~ 305 0
14 GRB 030226 gB 11 33 04.9 +25 53 56           ~ 212 0
15 GRB 011121 gB 11 34 26.67 -76 01 41.6       23.0   ~ 286 1
16 GRB 990506 gB 11 54 41 -26 45.0           ~ 169 1
17 GRB 971214 gB 11 56 26.4 +65 12 01           ~ 445 1
18 GRB 030328 gB 12 10 48.4 -09 20 51           ~ 148 0
19 GRB 000418 gB 12 25 21 +20 05.0           ~ 219 0
20 GRB 990510 gB 13 38 07.64 -80 29 48.8           ~ 499 1
21 GRB 020405 gB 13 58 03.12 -31 22 22.2   21.9 21.5     ~ 259 1
22 GRB 010222 G 14 52 12.5 +43 01 06           ~ 364 1
23 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 1012 1
24 GRB 000301C gB 16 20 18.5 +29 26 35           ~ 361 0
25 GRB 991208 gB 16 33 53.51 +46 27 21.5           ~ 269 1
26 GRB 000926 gB 17 04 15 +51 46.0           ~ 373 0
27 GRB 970828 gB 18 08 31.6 +59 18 51           ~ 353 1
28 GRB 000214 gB 18 54 27.0 -66 27 30           ~ 92 0
29 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1928 2
30 GRB 020813A gB 19 46 41.874 -19 36 04.81           ~ 316 0
31 GRB 990712 gB 22 31 53.061 -73 24 28.58           ~ 268 1
32 GRB 010921 gB 22 55 59.90 +40 55 52.9           ~ 173 1
33 GRB 980703 gB 23 59 06.7 +08 35 07           ~ 453 1

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