2006A&A...460..653D


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.14CET00:48:34

2006A&A...460..653D - Astronomy and Astrophysics, volume 460, 653-664 (2006/12-4)

Properties of X-ray rich gamma ray bursts and X-ray flashes detected with BeppoSAX and Hete-2.

D'ALESSIO V., PIRO L. and ROSSI E.M.

Abstract (from CDS):

We study the spectrum of the prompt emission and the X-ray and optical afterglow fluxes of 54 X-Ray Rich Gamma Ray Burst (XRRs) and X-Ray Flashes (XRFs), observed by BeppoSAX and HETE-2. A comparison is then performed with classical Gamma Ray Bursts (GRBs). The goal of this paper is to investigate the nature of XRRs/XRFs, as high redshift GRBs or off-axis GRBs, analyzing both their prompt and afterglow properties. We find that the XRR/XRF spectral indexes of the Band function are similar to those of classical GRBs, whereas the peak energy is lower by a factor of 4. We study the optical and X-Ray afterglow properties of the XRRs/XRFs; in particular we analyze the XRR 011030 afterglow. We find that the X-ray and optical flux distributions and the lightcurves of the XRRs/XRFs sample are consistent with those of classical GRBs; in particular, they show evidence of a break and no rising temporal slope. We compare these results with the afterglow predictions of the high redshift scenario, where XRFs are GRBs at higher redshift and of the off-axis scenario, where the observed differences are due to viewing angle effects. In this last framework, we consider jets with a homogeneous, a -2 power-law shaped and a Gaussian luminosity angular distribution. We find that the high redshift scenario can explain some events but not the total sample of XRRs/XRFs. The off-axis model may be consistent with our findings when a homogeneous jet is considered. However, given the uncertainties on the selection effects in our sample, a Gaussian jet viewed at small angles from the Gaussian core and a power-law shaped cannot be ruled out.

Abstract Copyright:

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

Simbad objects: 59

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Number of rows : 59

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 030824 gB 00 05 02 +19 55.6           ~ 22 0
2 GRB 021021 gB 00 17 23 -01 37.0           ~ 5 0
3 GRB 000608 gB 00 25.0 -69 02           ~ 6 0
4 GRB 021004 gB 00 26 54.68 +18 55 41.6           ~ 507 1
5 GRB 980306 gB 00 34 -46.2           ~ 19 0
6 GRB 011019 gB 00 42.8 -12 27           ~ 18 0
7 GRB 041006 gB 00 54 50.17 +01 14 07.0           ~ 184 2
8 GRB 021112 gB 02 36 52 +48 50.9           ~ 21 0
9 GRB 011130 gB 03 05 26.9 +03 49 30           ~ 43 0
10 GRB 011103 gB 03 20 37 +17 40.0           ~ 3 0
11 GRB 021104 gB 03 53 48 +37 57.2           ~ 19 0
12 GRB 031220 gB 04 39.6 +07 22           ~ 21 0
13 GRB 011212 gB 05 00 05 +32 07.6           ~ 20 0
14 SN 2002lt SN* 08 08 59.858 +06 43 37.52           SN.Ic:(~) 334 1
15 GRB 020127 gB 08 15 05.8 +36 44 31           ~ 58 1
16 SAX J0835.9+5118 LXB 08 35 56.0 +51 18 36           ~ 18 0
17 GRB 020124 gB 09 32 50.8 -11 31 11           ~ 139 2
18 GRB 020317 gB 10 23 21 +12 44.6           ~ 17 0
19 GRB 010213 gB 10 31 36.0 +05 30 39           ~ 23 0
20 SN 2003dh SN* 10 44 50.030 +21 31 18.15     16.2     SN.IcPec 1097 2
21 GRB 030418 gB 10 54 33.69 -07 01 40.8           ~ 65 0
22 GRB 030323 gB 11 06 09.4 -21 46 13           ~ 122 1
23 GRB 030416 gB 11 06 51 -02 53.0           ~ 13 0
24 GRB 011211 gB 11 15 16 -21 56.0           ~ 282 1
25 GRB 030115 gB 11 18 32.6 +15 02 59           ~ 84 1
26 GRB 010326B gB 11 24.4 -11 10           ~ 11 0
27 GRB 030429 gB 12 13 07.495 -20 54 49.54           ~ 117 1
28 GRB 990704 gB 12 19 27.3 -03 50 22           ~ 50 0
29 GRB 010613 gB 13 02 53 -21 11.0           ~ 9 0
30 GRB 030324 gB 13 37 04.4 -00 15 34           ~ 34 0
31 GRB 000615 gB 15 32.6 +73 48           ~ 27 0
32 GRB 010629 gB 16 32 38.3 -18 43 24           ~ 16 1
33 GRB 030528 gB 17 04 00.3 -22 37 10           ~ 82 1
34 GRB 000416 gB 17 15 -71.6           ~ 8 0
35 GRB 971024A gB 18 24 51 +49 28.9           ~ 14 1
36 GRB 030725 gB 20 33 47 -50 45.8           ~ 25 0
37 GRB 020812 gB 20 38 51 -05 31.2           ~ 25 0
38 GRB 011030 gB 20 43 35.4 +77 17 20           ~ 69 0
39 GRB 020625 gB 20 44 14 +07 10.2           ~ 13 0
40 GRB 030823 gB 21 30 47 +21 59.8           ~ 17 0
41 GRB 030821 gB 21 42 33 -45 12.2           ~ 9 0
42 GRB 030723 gB 21 49 24.40 -27 42 47.4           ~ 119 0
43 GRB 020410 gB 22 06 31.9 -83 49 28           ~ 36 0
44 GRB 020427 gB 22 09 28.3 -65 19 32           ~ 46 0
45 GRB 991106 gB 22 24 40.8 +54 22 45           ~ 26 0
46 GRB 020903 gB 22 48 42.34 -20 46 09.3           ~ 211 1
47 GRB 031109 gB 22 51 36 -09 18.2           ~ 5 0
48 GRB 010921 gB 22 55 59.90 +40 55 52.9           ~ 156 1
49 GRB 020819 gB 23 00 12 -43 00.7           ~ 119 1
50 GRB 991217 gB 23 03.1 +00 14           ~ 9 0
51 GRB 981226 gB 23 29 37.2 -23 55 54           ~ 99 1
52 XRF 000206 gB ~ ~           ~ 2 0
53 GRB 980128 gB ~ ~           ~ 3 0
54 XRF 031109B gB ~ ~           ~ 1 0
55 GRB 971019 gB ~ ~           ~ 3 0
56 XRF 990526 gB ~ ~           ~ 2 0
57 XRF 011091 gB ~ ~           ~ 1 0
58 XRF 000208 gB ~ ~           ~ 1 0
59 GRB 010225 gB ~ ~           ~ 4 0

    Equat.    Gal    SGal    Ecl

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2019.11.14-00:48:34

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