2012ApJ...751...49L

Query : 2012ApJ...751...49L

2012ApJ...751...49L - Astrophys. J., 751, 49 (2012/May-3)

Lorentz-factor–isotropic-luminosity/energy correlations of gamma-ray bursts and their interpretation.

LU J., ZOU Y.-C., LEI W.-H., ZHANG B., WU Q., WANG D.-X., LIANG E.-W. and LU H.-J.

Abstract (from CDS):

The bulk Lorentz factor of the gamma-ray burst (GRB) ejecta (Γ0) is a key parameter to understanding GRB physics. Liang et al. have discovered a correlation between Γ0 and isotropic γ-ray energy: Γ0∝E 0.25_γ, iso, 52_. By including more GRBs with updated data and more methods to derive Γ0, we confirm this correlation and obtain Γ0 ≃ 91E 0.29_γ, iso, 52_. Evaluating the mean isotropic γ-ray luminosities L_γ, iso_ of the GRBs in the same sample, we discover an even tighter correlation Γ0≃ 249L 0.30_γ, iso, 52_. We propose an interpretation to this later correlation. Invoking a neutrino-cooled hyperaccretion disk around a stellar mass black hole as the central engine of GRBs, we derive jet luminosity powered by neutrino annihilation and baryon loading from a neutrino-driven wind. Applying beaming correction, we finally derive Γ0∝L 0.22_γ, iso_, which is consistent with the data. This suggests that the central engine of long GRBs is likely a stellar mass black hole surrounded by a hyper-accreting disk.

Abstract Copyright: ∼

Journal keyword(s): black hole physics - gamma-ray burst: general - neutrinos - relativistic processes

Simbad objects: 51

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Number of rows : 51
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 070110 gB 00 03 39.270 -52 58 27.00 21.8 21.9 21.2     ~ 220 0
2 GRB 071031 gB 00 25 37.40 -58 03 33.9           ~ 184 0
3 GRB 080710 gB 00 33 05.68 +19 30 05.8           ~ 136 0
4 GRB 100906A gB 01 54 44.19 +55 37 49.8           ~ 233 0
5 GRB 040924 gB 02 06 22.52 +16 08 48.8           ~ 169 1
6 GRB 060908 gB 02 07 18.360 +00 20 31.20 16.99 18.34 16.85     ~ 217 0
7 Fermi bn110213220 gB 02 51 51.37 +49 16 21.2           ~ 175 0
8 Fermi bn100728439 gB 02 56 13.44 +00 16 51.6           ~ 142 0
9 GRB 061007 gB 03 05 19.510 -50 30 02.50 14.28 14.40 12.95     ~ 315 1
10 GRB 070318 gB 03 13 56.830 -42 56 46.30 18.27 16.23 15.49     ~ 170 0
11 GRB 060210 gB 03 50 57.370 +27 01 34.40   20.27       ~ 275 0
12 GRB 060904B gB 03 52 50.520 -00 43 30.61 18.27 19.14 18.37     ~ 208 0
13 GRB 091029 gB 04 00 40.00 -55 57 12.7           ~ 168 0
14 GRB 090328 gB 06 02 39.69 -41 52 55.1           ~ 194 1
15 GRB 080129 gB 07 01 08.13 -07 50 47.8           ~ 85 0
16 GRB 070411 gB 07 09 19.930 +01 03 52.60     17.94     ~ 138 0
17 GRB 080916C gB 07 59 23.24 -56 38 16.8           ~ 386 0
18 SN 2002lt SN* 08 08 59.858 +06 43 37.52           SNIc: 363 1
19 GRB 061121 gB 09 48 54.570 -13 11 42.68 17.19 17.71 17.02     ~ 350 0
20 GRB 071010B gB 10 02 09.20 +45 43 52.2           ~ 173 0
21 GRB 110205A gB 10 58 31.12 +67 31 31.2           ~ 213 0
22 GRB 080330 gB 11 17 06.70 +30 36 24.1           ~ 145 0
23 GRB 070419A gB 12 10 58.830 +39 55 34.06 18.52         ~ 130 0
24 GRB 090424 gB 12 38 07.40 +16 49 45.9           ~ 269 0
25 Fermi bn090323002 gB 12 42 50.28 +17 03 11.9           ~ 244 1
26 GRB 090313 gB 13 13 36.00 +08 05 10.7           ~ 149 0
27 GRB 050801 gB 13 36 35.000 -21 55 41.00 15.03 15.82 15.46     ~ 164 0
28 GRB 050730 gB 14 08 17.090 -03 46 18.90   20.32 17.68     ~ 327 0
29 GRB 080319B gB 14 31 41.04 +36 18 09.2           ~ 508 0
30 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 1012 1
31 GRB 081203A gB 15 32 07.6 +63 31 15           ~ 177 0
32 GRB 060418 gB 15 45 42.600 -03 38 20.00 15.73 16.19 14.98     ~ 389 0
33 GRB 050401 gB 16 31 28.84 +02 11 14.5           ~ 348 0
34 GRB 080319C gB 17 15 55.48 +55 23 31.7           ~ 174 0
35 Fermi bn090902462 gB 17 39 45.26 +27 19 28.1           ~ 440 0
36 SN 2005nc SN* 18 32 32.560 +26 20 22.34           SNIc: 400 1
37 GRB 080603A gB 18 37 37.95 +62 44 39.6           ~ 89 0
38 GRB 071010A gB 19 12 14.42 -32 24 06.2           ~ 138 0
39 GRB 071003 gB 20 07 24.50 +10 56 48.8           ~ 181 0
40 GRB 100621A gB 21 01 13.12 -51 06 22.5           ~ 204 0
41 GRB 050922C gB 21 09 33.000 -08 45 30.10 15.15 15.86 14.69     ~ 301 0
42 GRB 060614 G 21 23 32.140 -53 01 36.10           ~ 714 0
43 GRB 060605 gB 21 28 37.320 -06 03 31.30   20.12 16.53     ~ 210 0
44 GRB 080413B gB 21 44 34.62 -19 58 51.2           ~ 191 0
45 GRB 060607 gB 21 58 50.400 -22 29 46.70 18.49 16.67 15.09     ~ 318 0
46 Fermi bn090510016 G 22 14 12.6230 -26 34 58.550           ~ 548 0
47 GRB 050820A gB 22 29 38.110 +19 33 37.10 18.33 19.00 18.47     ~ 409 0
48 Fermi bn091024380 gB 22 37 +56.9           ~ 151 0
49 GRB 090812 gB 23 32 48.5 -10 36 17           ~ 165 0
50 Fermi bn090926181 gB 23 33 36.18 -66 19 25.9           ~ 339 0
51 Fermi bn080810549 gB 23 47 08.00 +00 18 35.1           ~ 240 0

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