2024ApJ...972....1L

Query : 2024ApJ...972....1L

2024ApJ...972....1L - Astrophys. J., 972, 1-12 (2024/September-1)

Magnetization Factors of Gamma-Ray Burst Jets Revealed by a Systematic Analysis of the Fermi Sample.

LI A., GAO H., LAN L. and ZHANG B.

Abstract (from CDS):

The composition of gamma-ray burst (GRB) jets remained a mystery until recently. In practice, we usually characterize the magnetization of the GRB jets (σ0) through the ratio between the Poynting flux and matter (baryonic) flux. With the increasing value of σ0, magnetic energy gradually takes on a dominant role in the acceleration and energy dissipation of the jet, causing the proportion of thermal component in the prompt-emission spectrum of GRBs to gradually decrease or even be completely suppressed. In this work, we conducted an extensive analysis of the time-resolved spectrum for all Fermi GRBs with known redshift, and we diagnose σ0 for each time bin by contrasting the thermal and nonthermal radiation components. Our results suggest that most GRB jets should contain a significant magnetic energy component, likely with magnetization factors σ0 ≥ 10. The value of σ0 seems to vary significantly within the same GRB. Future studies with more samples, especially those with lower-energy spectral information coverage, will further verify our results.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Gamma-ray bursts

Simbad objects: 90

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Number of rows : 90
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 180720B gB 00 02 06.99 -02 55 07.8           ~ 215 0
2 GRB 220101A gB 00 05 24.89 +31 46 07.7           ~ 85 0
3 Fermi bn160629930 gB 00 19 27.17 +76 58 02.4           ~ 39 0
4 Fermi bn180703876 gB 00 25 52.72 -67 10 47.9           ~ 35 0
5 GRB 200826A gB 00 27 08.47 +34 01 36.5           ~ 121 0
6 Fermi bn131231198 gB 00 42 44.0 -01 29 40           ~ 103 0
7 SN 2010ma SN* 00 48 55.35 -34 33 59.5           SNIc 190 1
8 GRB 181020A gB 00 55 55.77 -47 22 50.6           ~ 61 0
9 Fermi bn081221681 gB 01 03 10.2 -24 32 53           ~ 186 0
10 GRB 201216C gB 01 05 28.88 +16 30 58.0           ~ 89 0
11 GRB 211018A gB 01 18.7 -03 36           ~ 8 0
12 Fermi bn100814160 gB 01 29 53.61 -17 59 43.6           ~ 219 0
13 GRB 081222 gB 01 30 57.76 -34 05 44.0           ~ 199 0
14 GRB 100906A gB 01 54 44.19 +55 37 49.8           ~ 233 0
15 GRB 131011A gB 02 10 06.11 -04 24 42.5           ~ 45 0
16 SN 2009nz SN* 02 26 19.87 -18 57 08.6           ~ 307 1
17 GRB 140801A gB 02 56 16.50 +30 56 16.8           ~ 55 0
18 SN 2019oyw SN* 02 58 10.510 -08 57 27.20           ~ 218 0
19 GRB 190324A gB 03 18 27.77 -47 12 54.1           ~ 35 0
20 GRB 190114C gB 03 38 01.18 -26 56 47.8           ~ 343 0
21 GRB 171010A gB 04 26 19.41 -10 27 47.9           SNIc-BL 109 0
22 Fermi bn131105087 gB 04 43 53.50 -63 00 17.7           ~ 95 0
23 GRB 211023A gB 04 49 +85.3           ~ 42 0
24 GRB 201020B gB 05 01 52.03 +77 04 05.9           ~ 34 0
25 Fermi bn100728095 gB 05 55 02.00 -15 15 20.2           ~ 157 0
26 GRB 081121 gB 05 57 07.70 -60 36 42.1           ~ 152 0
27 GRB 090328 gB 06 02 39.69 -41 52 55.1           ~ 194 1
28 Fermi bn120711115 gB 06 18 42.839 -70 59 56.78           ~ 125 0
29 GRB 140213A gB 07 00 37.18 -73 08 14.1           ~ 102 0
30 GRB 210204A gB 07 48 19.37 +11 24 34.2           ~ 46 0
31 GRB 080916C gB 07 59 23.24 -56 38 16.8           ~ 386 0
32 Fermi bn120119170 gB 08 00 06.940 -09 04 53.83           ~ 193 0
33 Fermi bn150314205 gB 08 26 40.82 +63 50 03.4           ~ 117 0
34 GRB 090102 gB 08 32 59.50 +33 06 25.7           ~ 253 0
35 Fermi bn090516353 gB 09 12 59 -11 50.9           ~ 173 0
36 Fermi bn130310840 gB 09 29 -17.2           ~ 31 0
37 Fermi bn111228657 gB 10 00 16.04 +18 17 52.2           ~ 201 0
38 GRB 200613A gB 10 12 10.03 +45 45 14.1           ~ 36 0
39 GRB 131108A gB 10 26 00.480 +09 39 44.05           ~ 96 0
40 GRB 210704A gB 10 36 05.21 +57 12 59.1           ~ 36 0
41 GRB 220107A gB 11 19 13.68 +34 10 14.3           ~ 29 0
42 Fermi bn120624933 gB 11 23 31.98 +08 55 42.1           ~ 100 0
43 SN 2013cq SN* 11 32 32.84 +27 41 56.2           SNIc 613 1
44 GRB 090424 gB 12 38 07.40 +16 49 45.9           ~ 269 0
45 Fermi bn090323002 gB 12 42 50.28 +17 03 11.9           ~ 244 1
46 Fermi bn100414097 gB 12 48 30.0 +08 41 35           ~ 136 0
47 GRB 100724A gB 12 58 10.38 -11 06 09.3           ~ 198 0
48 Fermi bn141220252 gB 13 00 15.70 +32 08 47.2           ~ 81 0
49 Fermi bn140423356 gB 13 09 06.20 +49 50 18.3           ~ 114 0
50 GRB 220627A gB 13 25 28.51 -32 25 34.5           ~ 31 0
51 SDSS J140910.47+275320.8 G 14 09 10.47535 +27 53 20.8393           ~ 279 0
52 GRB 200524A gB 14 12 10.74 +60 54 19.4           ~ 40 0
53 SN 2013dx SN* 14 29 14.77 +15 46 26.6           ~ 178 0
54 Fermi bn170405777 gB 14 39 18.66 -25 14 36.9           ~ 75 0
55 Fermi bn160804065 gB 14 46 31.20 +09 59 56.1           ~ 79 0
56 Fermi bn130610133 gB 14 57 40.91 +28 12 25.8           ~ 89 0
57 Fermi bn101213451 gB 16 05 15.27 +21 53 50.5           ~ 68 0
58 GRB 210610B gB 16 15 40.47 +14 23 56.3           ~ 87 0
59 GRB 200829A gB 16 44 49.42 +72 19 45.3           ~ 55 0
60 GRB 091003A gB 16 46 04.680 +36 37 31.08           ~ 135 0
61 SN 2018fip SN* 16 54 15.64 -54 02 39.5           SNIc-BL 83 0
62 GRB 140508A gB 17 01 51.95 +46 46 49.5           ~ 76 0
63 GRB 170214A gB 17 05 21.94 -01 53 14.9           ~ 54 0
64 Fermi bn090902462 gB 17 39 45.26 +27 19 28.1           ~ 440 0
65 Fermi bn151027166 gB 18 09 56.87 +61 21 12.3           ~ 143 0
66 Fermi bn120326056 gB 18 15 37.06 +69 15 35.4           ~ 188 0
67 GRB 120909A gB 18 22 56.81 -59 26 54.9           ~ 103 0
68 Fermi bn110731465 gB 18 42 00.99 -28 32 13.8           ~ 193 0
69 Fermi bn140512814 gB 19 17 28.81 -15 05 39.5           ~ 133 0
70 GRB 120707A gB 19 24 -34.4           ~ 21 0
71 GRB 090618 gB 19 36 01.80 +78 21 07.1           ~ 358 0
72 Fermi bn121128212 gB 20 02 23.88 +54 17 59.1           ~ 128 0
73 GRB 160625B gB 20 34 23.67 +06 55 11.1           ~ 235 0
74 GRB 150403A gB 20 46 01.17 -62 42 40.1           ~ 116 0
75 Fermi bn160509374 gB 20 47 00.90 +76 06 30.1           ~ 141 0
76 Fermi bn120716712 gB 20 52 12.17 +09 35 53.9           ~ 72 0
77 GRB 161117A gB 21 28 12.59 -29 36 49.9           ~ 74 0
78 GRB 141028A gB 21 30 24.46 -00 13 55.6           ~ 109 0
79 GRB 220527A gB 21 34 06.70 +14 58 18.7           ~ 27 0
80 Fermi bn140108721 gB 21 40 26.77 +58 44 41.4           ~ 58 0
81 Fermi bn080804972 gB 21 54 41.90 -53 11 20.2           ~ 158 0
82 GRB 110721A gB 22 10 -38.6           ~ 155 0
83 Fermi bn090510016 G 22 14 12.6230 -26 34 58.550           ~ 548 0
84 Fermi bn120323507 gB 22 42 +29.7           ~ 60 0
85 Fermi bn150821406 gB 22 47 39.15 -57 53 38.2           ~ 71 0
86 Fermi bn090926181 gB 23 33 36.18 -66 19 25.9           ~ 339 0
87 GRB 130518A gB 23 42 39.79 +47 27 55.2           ~ 86 0
88 Fermi bn080810549 gB 23 47 08.00 +00 18 35.1           ~ 240 0
89 Fermi bn180620660 gB 23 50 05.07 -57 57 44.7           ~ 53 0
90 GRB 201104C gB ~ ~           ~ 3 0

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