2013ApJ...764...75G

Query : 2013ApJ...764...75G

2013ApJ...764...75G - Astrophys. J., 764, 75 (2013/February-2)

On the correlation of low-energy spectral indices and redshifts of gamma-ray bursts.

GENG J.J. and HUANG Y.F.

Abstract (from CDS):

It was found by Amati et al. in 2002 that for a small sample of nine gamma-ray bursts (GRBs), more distant events appear to be systematically harder in the soft gamma-ray band. Here, we have collected a larger sample of 65 GRBs, whose time-integrated spectra are well established and can be well fitted with the so-called Band function. It is confirmed that a correlation between the redshifts (z) and the low-energy indices (α) of the Band function does exist, though it is a bit more scattered than the result of Amati et al. This correlation cannot be simply attributed to the effect of photon reddening. Furthermore, correlations between α and Epeak (the peak energy in the νFν spectrum in the rest frame), α and Eiso(the isotropic energy release), and α and Liso(the isotropic luminosity) are also found, which indicate that these parameters are somehow connected. The results may provide useful constraints on the physics of GRBs.

Abstract Copyright: ∼

Journal keyword(s): gamma-ray burst: general - methods: statistical - X-rays: bursts

Simbad objects: 65

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Number of rows : 65
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 GRB 041006 gB 00 54 50.17 +01 14 07.0           ~ 197 2
2 Fermi bn100814160 gB 01 29 53.61 -17 59 43.6           ~ 192 0
3 GRB 081222 gB 01 30 57.76 -34 05 44.0           ~ 176 0
4 GRB 040924 gB 02 06 22.52 +16 08 48.8           ~ 164 1
5 GRB 000911 gB 02 18 42 +07 48.0           ~ 156 0
6 SN 2009nz SN* 02 26 19.87 -18 57 08.6           ~ 273 1
7 GRB 050603 gB 02 39 56.839 -25 10 54.92     18.48     ~ 165 0
8 Fermi bn110213220 gB 02 51 51.37 +49 16 21.2           ~ 151 0
9 GRB 061007 gB 03 05 19.510 -50 30 02.50 14.28 14.40 12.95     ~ 289 1
10 GRB 070328 gB 04 20 27.680 -34 04 00.60 20.29         ~ 87 0
11 GRB 970228 gB 05 01 46.7 +11 46 53           ~ 638 1
12 GRB 991216 gB 05 09 31.2983 +11 17 07.262           ~ 421 0
13 GRB 990705 gB 05 09 54.5 -72 07 53           ~ 222 1
14 GRB 081121 gB 05 57 07.70 -60 36 42.1           ~ 132 0
15 GRB 090328 gB 06 02 39.69 -41 52 55.1           ~ 171 1
16 GRB 000131 gB 06 13 31.08 -51 56 41.7     24.7     ~ 168 1
17 GRB 970508 gB 06 53 49.2 +79 16 19           ~ 868 1
18 GRB 110422A gB 07 28 11.21 +75 06 24.0           ~ 99 0
19 GRB 070125 gB 07 51 17.80 +31 09 04.8           ~ 181 0
20 GRB 080916C gB 07 59 23.24 -56 38 16.8           ~ 356 0
21 SN 2002lt SN* 08 08 59.858 +06 43 37.52           SNIc: 352 1
22 GRB 980326 gB 08 36 34.3 -18 51 24           ~ 262 0
23 GRB 110503A gB 08 51 06.31 +52 12 27.7           ~ 101 0
24 GRB 020124 gB 09 32 50.8 -11 31 11           ~ 152 0
25 GRB 071010B gB 10 02 09.20 +45 43 52.2           ~ 160 0
26 GRB 980613 gB 10 17 57.8 +71 27 26           ~ 201 1
27 SN 2003dh SN* 10 44 50.030 +21 31 18.15     16.2     SNIcpec 1208 1
28 GRB 011211 gB 11 15 16 -21 56.0           ~ 299 0
29 GRB 030226 gB 11 33 04.9 +25 53 56           ~ 204 0
30 GRB 011121 gB 11 34 26.67 -76 01 41.6       23.0   ~ 275 1
31 Fermi bn091020900 gB 11 42 55.20 +50 58 42.0           ~ 164 0
32 GRB 990506 gB 11 54 41 -26 45.0           ~ 166 1
33 GRB 971214 gB 11 56 26.4 +65 12 01           ~ 440 1
34 GRB 030328 gB 12 10 48.4 -09 20 51           ~ 144 0
35 GRB 030429 gB 12 13 07.495 -20 54 49.54     23.70     ~ 131 0
36 GRB 090424 gB 12 38 07.40 +16 49 45.9           ~ 238 0
37 Fermi bn090323002 gB 12 42 50.28 +17 03 11.9           ~ 220 1
38 Fermi bn100414097 gB 12 48 30.0 +08 41 35           ~ 119 0
39 GRB 990510 gB 13 38 07.64 -80 29 48.8           ~ 488 1
40 GRB 080319B gB 14 31 41.04 +36 18 09.2           ~ 467 0
41 GRB 010222 G 14 52 12.5 +43 01 06           ~ 355 1
42 GRB 080721A gB 14 57 55.76 -11 43 24.9           ~ 164 0
43 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 989 1
44 GRB 110715A gB 15 50 44.090 -46 14 06.53           ~ 100 0
45 GRB 000301C gB 16 20 18.5 +29 26 35           ~ 356 0
46 GRB 050401 gB 16 31 28.84 +02 11 14.5           ~ 335 0
47 GRB 991208 gB 16 33 53.51 +46 27 21.5           ~ 260 1
48 GRB 091003A gB 16 46 04.680 +36 37 31.08           ~ 121 0
49 GRB 000926 gB 17 04 15 +51 46.0           ~ 364 0
50 Fermi bn090902462 gB 17 39 45.26 +27 19 28.1           ~ 391 0
51 GRB 970828 gB 18 08 31.6 +59 18 51           ~ 347 1
52 SN 2005nc SN* 18 32 32.560 +26 20 22.34           SNIc: 382 1
53 Fermi bn110731465 gB 18 42 00.99 -28 32 13.8           ~ 153 0
54 GRB 000214 gB 18 54 27.0 -66 27 30           ~ 90 0
55 GRB 090618 gB 19 36 01.80 +78 21 07.1           ~ 320 0
56 GRB 020813A gB 19 46 41.874 -19 36 04.81           ~ 303 0
57 GRB 100621A gB 21 01 13.12 -51 06 22.5           ~ 184 0
58 GRB 090510 gB 22 14 12.60 -26 35 51.1           ~ 494 1
59 GRB 990712 gB 22 31 53.061 -73 24 28.58           ~ 262 1
60 SN 2008hw SN* 22 39 50.39 -40 08 49.1           SNIc 174 1
61 GRB 010921 gB 22 55 59.90 +40 55 52.9           ~ 171 1
62 GRB 020819 gB 23 00 12 -43 00.7           ~ 130 1
63 Fermi bn090926181 gB 23 33 36.18 -66 19 25.9           ~ 303 0
64 GRB 061222A gB 23 53 03.419 +46 31 58.60           ~ 158 0
65 GRB 980703 gB 23 59 06.7 +08 35 07           ~ 445 1

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