2015ApJ...813..127P

Query : 2015ApJ...813..127P

2015ApJ...813..127P - Astrophys. J., 813, 127 (2015/November-2)

Hydrodynamic properties of gamma-ray burst outflows deduced from the thermal component.

PE'ER A., BARLOW H., O'MAHONY S., MARGUTTI R., RYDE F., LARSSON J., LAZZATI D. and LIVIO M.

Abstract (from CDS):

We study the properties of a significant thermal emission component that was identified in 47 gamma-ray bursts observed by different instruments. Within the framework of the ''fireball'' model, we deduce the values of the Lorentz factor Γ, and the acceleration radius, r0, for these bursts. We find that all the values of Γ in our sample are in the range with. We find a very weak dependence of Γ on the acceleration radius r0, with α = -0.10±0.09 at the σ = 2.1 confidence level. The values of r0 span a wide range, cm, with a mean value of cm. This is higher than the gravitational radius of a 10 M☉black hole by a factor of ≈30. We argue that this result provides indirect evidence for jet propagation inside a massive star, and suggests the existence of recollimation shocks that take place close to this radius.

Abstract Copyright: ∼

Journal keyword(s): gamma rays: stars - hydrodynamics - methods: data analysis - radiation mechanisms: thermal - radiative transfer

Simbad objects: 50

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Number of rows : 50
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 Fermi bn100507577 gB 00 11.6 -79 01           ~ 31 0
2 GRB 980306 gB 00 34 -46.2           ~ 21 0
3 SN 2010ma SN* 00 48 55.35 -34 33 59.5           SNIc 190 1
4 4B 941121 gB 02 21.8 -66 22           ~ 21 0
5 4B 951016 gB 02 23.3 -24 22           ~ 25 0
6 GRB 960924 gB 02 29.1 +02 42           ~ 30 0
7 Fermi bn090926914 gB 03 05 14.30 -38 59 50.9           ~ 149 1
8 SN 2006aj SN* 03 21 39.670 +16 52 02.27 17.96 19.11 17.40     SNIc-BL 1007 1
9 4B 960124 gB 03 24.2 +54 03           ~ 17 0
10 4B 951228 gB 06 12.5 +28 13           ~ 21 0
11 GRB 960912 gB 06 21 +78.8           ~ 20 0
12 3B 930612 gB 06 52.3 -69 46           ~ 48 0
13 SN 2010bh SN* 07 10 30.63 -56 15 19.7           SNIc 336 1
14 4B 951102 gB 09 14.3 +46 59           ~ 22 0
15 4B 960530 gB 09 33.6 -53 47           ~ 31 0
16 4B 970223 gB 09 38 +34.1           ~ 25 0
17 2B 921003 gB 10 01.3 -14 43           ~ 23 0
18 1B 910807 gB 10 15.4 +06 29           ~ 38 0
19 4B 950624 gB 11 01.5 +14 59           ~ 27 0
20 4B 950403 gB 12 18.6 +56 33           ~ 15 0
21 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
22 GRB 100724A gB 12 58 10.38 -11 06 09.3           ~ 198 0
23 GRB 990510 gB 13 38 07.64 -80 29 48.8           ~ 499 1
24 4B 941026 gB 13 43.8 -06 32           ~ 37 0
25 GRB 110920 gB 13 59 16.8 -27 33 36           ~ 11 0
26 4B 941023 gB 14 09.1 -82 21           ~ 18 0
27 4B 960804 gB 14 34.7 +68 12           ~ 17 0
28 2B 930112 gB 15 05.3 +27 44           ~ 11 0
29 3B 940410 gB 16 59.6 +30 48           ~ 26 0
30 2B 930214 gB 17 01.4 +17 59           ~ 16 0
31 Fermi bn090902462 gB 17 39 45.26 +27 19 28.1           ~ 440 0
32 GRB 961102 gB 17 53 +30.3           ~ 17 0
33 GRB 970828 gB 18 08 31.6 +59 18 51           ~ 353 1
34 GRB 990102 gB 18 22 +39.7           ~ 25 0
35 Fermi bn110731465 gB 18 42 00.99 -28 32 13.8           ~ 193 0
36 4B 951213 gB 18 55.9 -06 49           ~ 26 0
37 1B 911031 gB 18 58.2 +21 20           ~ 45 0
38 2B 920718 gB 19 45.6 -55 59           ~ 36 0
39 2B 920525 gB 19 58.5 -42 03           ~ 53 0
40 1B 911016 gB 20 01.9 -03 47           ~ 47 0
41 3B 940708 gB 20 06.3 +24 40           ~ 26 0
42 2B 921207 gB 20 25.3 -42 56           ~ 47 0
43 GRB 970925 gB 22 02 -11.7           ~ 24 0
44 GRB 110721A gB 22 10 -38.6           ~ 155 0
45 2B 921123 gB 22 17.0 -53 15           ~ 42 0
46 Fermi bn120323507 gB 22 42 +29.7           ~ 60 0
47 GRB 950701B gB 23 05.1 +37 44           ~ 20 0
48 1B 910814 gB 23 05.4 +30 26           ~ 81 0
49 Fermi bn080810549 gB 23 47 08.00 +00 18 35.1           ~ 240 0
50 GRB 960605 gB ~ ~           ~ 4 0

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