2008MNRAS.387..319G


Query : 2008MNRAS.387..319G

2008MNRAS.387..319G - Mon. Not. R. Astron. Soc., 387, 319-330 (2008/June-2)

The Epeak-Eiso plane of long gamma-ray bursts and selection effects.

GHIRLANDA G., NAVA L., GHISELLINI G., FIRMANI C. and CABRERA J.I.

Abstract (from CDS):

We study the distribution of long gamma-ray bursts in the Epeak-Eiso and in the Eobspeak-fluence planes through an updated sample of 76 bursts, with measured redshift and spectral parameters, detected up to 2007 September. We confirm the existence of a strong rest-frame correlation EpeakE0.54±0.01iso. Contrary to previous studies, no sign of evolution with redshift of the Epeak-Eisocorrelation (either its slope and its normalization) is found. The 76 bursts define a strong Eobspeak-fluence correlation in the observer frame (EobspeakF0.32±0.05bol) with redshifts evenly distributed along this correlation. We study possible instrumental selection effects in the observer frame Eobspeak-fluence plane. In particular, we concentrate on the minimum peak flux necessary to trigger a given gamma-ray burst (GRB) detector (trigger threshold) and the minimum fluence a burst must have to determine the value of Eobspeak(spectral analysis threshold). We find that the latter dominates in the Eobspeak-fluence plane over the former. Our analysis shows, however, that these instrumental selection effects do not dominate for bursts detected before the launch of the Swift satellite, while the spectral analysis threshold is the dominant truncation effect of the Swift GRB sample (27 out of 76 events). This suggests that the Eobspeak-fluence correlation defined by the pre-Swift sample could be affected by other, still not understood, selection effects. Besides, we caution about the conclusions on the existence of the Eobspeak-fluence correlation based on our Swift sample alone.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): radiation mechanisms: non-thermal - gamma rays: bursts - X-rays: general

Simbad objects: 78

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Number of rows : 78
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 GRB 021004 gB 00 26 54.68 +18 55 41.6           ~ 531 0
2 GRB 041006 gB 00 54 50.17 +01 14 07.0           ~ 190 2
3 GRB 050904 gB 00 54 50.794 +14 05 09.42           ~ 450 0
4 GRB 050908 gB 01 21 50.750 -12 57 17.20           ~ 165 0
5 GRB 000210 gB 01 59 15 -40 40.0           ~ 166 0
6 GRB 040924 gB 02 06 22.52 +16 08 48.8           ~ 154 1
7 GRB 060908 gB 02 07 18.360 +00 20 31.20 16.99 18.34 16.85     ~ 190 0
8 GRB 000911 gB 02 18 42 +07 48.0           ~ 149 0
9 GRB 050603 gB 02 39 56.839 -25 10 54.92     18.48     ~ 154 0
10 GRB 060906 gB 02 43 00.900 +30 21 42.12     19.84     ~ 129 0
11 GRB 061007 gB 03 05 19.510 -50 30 02.50 14.28 14.40 12.95     ~ 279 1
12 GRB 050318 gB 03 18 51.000 -46 23 43.61 18.10 18.68 17.58     ~ 168 0
13 SN 2006aj SN* 03 21 39.670 +16 52 02.27 17.96 19.11 17.40     SNIc-BL 892 1
14 GRB 060115 gB 03 36 08.400 +17 20 43.00           ~ 160 0
15 GRB 060223A gB 03 40 49.560 -17 07 48.40     17.90     ~ 83 0
16 GRB 060210 gB 03 50 57.370 +27 01 34.40   20.27       ~ 243 0
17 GRB 060904B gB 03 52 50.520 -00 43 30.61 18.27 19.14 18.37     ~ 177 0
18 GRB 970228 gB 05 01 46.7 +11 46 53           ~ 630 1
19 GRB 060124 gB 05 08 25.900 +69 44 26.98   18.91 17.35     ~ 249 0
20 GRB 991216 gB 05 09 31.2983 +11 17 07.262           ~ 414 0
21 GRB 990705 gB 05 09 54.5 -72 07 53           ~ 218 1
22 GRB 061126 gB 05 46 24.460 +64 12 38.49 18.62 18.79 19.20     ~ 164 1
23 GRB 000131 gB 06 13 31.08 -51 56 41.7     24.7     ~ 162 1
24 GRB 970508 gB 06 53 49.2 +79 16 19           ~ 856 1
25 GRB 061222B gB 07 01 24.600 -25 51 36.00     19.87     ~ 75 0
26 GRB 070125 gB 07 51 17.80 +31 09 04.8           ~ 167 0
27 SN 2003lw SN* 08 02 30.1 -39 51 03       20.23   SNIc: 522 0
28 SN 2002lt SN* 08 08 59.858 +06 43 37.52           SNIc: 343 1
29 GRB 980326 gB 08 36 34.3 -18 51 24           ~ 259 0
30 GRB 050505 gB 09 27 03.300 +30 16 23.70     20.74     ~ 183 0
31 GRB 020124 gB 09 32 50.8 -11 31 11           ~ 147 0
32 GRB 061121 gB 09 48 54.570 -13 11 42.68 17.19 17.71 17.02     ~ 305 0
33 GRB 980613 gB 10 17 57.8 +71 27 26           ~ 199 1
34 SN 2003dh SN* 10 44 50.030 +21 31 18.15     16.2     SNIcpec 1171 1
35 GRB 011211 gB 11 15 16 -21 56.0           ~ 291 0
36 GRB 030226 gB 11 33 04.9 +25 53 56           ~ 194 0
37 GRB 990506 gB 11 54 41 -26 45.0           ~ 161 1
38 GRB 971214 gB 11 56 26.4 +65 12 01           ~ 437 1
39 GRB 030328 gB 12 10 48.4 -09 20 51           ~ 139 0
40 GRB 030429 gB 12 13 07.495 -20 54 49.54     23.70     ~ 125 0
41 GRB 000418 gB 12 25 21 +20 05.0           ~ 205 0
42 GRB 050416 gB 12 33 54.600 +21 03 26.69     19.12     ~ 263 1
43 GRB 060206 gB 13 31 43.420 +35 03 03.60   19.99 17.09     ~ 300 0
44 GRB 990510 gB 13 38 07.64 -80 29 48.8           ~ 477 1
45 GRB 020405 gB 13 58 03.12 -31 22 22.2   21.9 21.5     ~ 241 1
46 GRB 060814 gB 14 45 21.480 +20 35 11.80           ~ 203 0
47 GRB 010222 G 14 52 12.5 +43 01 06           ~ 341 1
48 GRB 060714 gB 15 11 26.450 -06 33 58.30   20.21 18.54     ~ 182 0
49 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 974 1
50 GRB 060526 gB 15 31 18.360 +00 17 04.90   18.31 17.16     ~ 253 0
51 GRB 060418 gB 15 45 42.600 -03 38 20.00 15.73 16.19 14.98     ~ 344 0
52 GRB 060510B gB 15 56 29.200 +78 34 12.00           ~ 137 0
53 GRB 050401 gB 16 31 28.84 +02 11 14.5           ~ 322 0
54 GRB 991208 gB 16 33 53.51 +46 27 21.5           ~ 249 1
55 GRB 000926 gB 17 04 15 +51 46.0           ~ 351 0
56 GRB 050814 gB 17 36 45.390 +46 20 21.60           ~ 147 0
57 GRB 050223 gB 18 05 32.200 -62 28 20.40           ~ 102 0
58 GRB 970828 gB 18 08 31.6 +59 18 51           ~ 341 1
59 GRB 050126 gB 18 32 27.22 +42 22 14.2           ~ 120 0
60 SN 2005nc SN* 18 32 32.560 +26 20 22.34           SNIc: 361 1
61 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1749 2
62 GRB 020813A gB 19 46 41.874 -19 36 04.81           ~ 293 0
63 GRB 050922C gB 21 09 33.000 -08 45 30.10 15.15 15.86 14.69     ~ 268 0
64 GRB 060614 gB 21 23 32.140 -53 01 36.10 18.89 20.12 19.54     ~ 546 1
65 GRB 060605 gB 21 28 37.320 -06 03 31.30   20.12 16.53     ~ 184 0
66 GRB 060522 gB 21 31 44.850 +02 53 10.80           ~ 124 0
67 GRB 060927A gB 21 58 11.930 +05 21 50.32           ~ 183 0
68 GRB 060607 gB 21 58 50.400 -22 29 46.70 18.49 16.67 15.09     ~ 281 0
69 GRB 051109A gB 22 01 15.320 +40 49 23.70   20.09 20.14     ~ 160 0
70 GRB 050820A gB 22 29 38.110 +19 33 37.10 18.33 19.00 18.47     ~ 365 0
71 GRB 990712 gB 22 31 53.061 -73 24 28.58           ~ 255 1
72 GRB 020903 gB 22 48 42.34 -20 46 09.3           ~ 226 1
73 GRB 010921 gB 22 55 59.90 +40 55 52.9           ~ 165 1
74 GRB 020819 gB 23 00 12 -43 00.7           ~ 122 1
75 GRB 050803 gB 23 22 37.910 +05 47 09.00           ~ 110 0
76 GRB 060707 gB 23 48 19.000 -17 54 17.00     19.79     ~ 150 0
77 GRB 051022A gB 23 56 04.200 +19 36 32.30           ~ 173 1
78 GRB 980703 gB 23 59 06.7 +08 35 07           ~ 432 1

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2022.09.28-02:12:14

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