2021MNRAS.507.1047Y

Query : 2021MNRAS.507.1047Y

2021MNRAS.507.1047Y - Mon. Not. R. Astron. Soc., 507, 1047-1054 (2021/October-2)

Constraining properties of GRB central engines with X-ray flares.

YI S.-X., XIE W., MA S.-B., LEI W.-H. and DU M.

Abstract (from CDS):

X-ray flares in gamma-ray bursts (GRBs) are believed to be generated by the late activities of central engine, and thus provide an useful tool to diagnose the properties of central objects. In this paper, we work on a GRB X-ray flare sample whose bulk Lorentz factors are constrained by two different methods and the jet opening angles are determined by the jet breaks in afterglow light curves. Considering a hyperaccreting stellar-mass black hole (BH) as the central engine of GRBs and the Blandford & Znajek process (BZ) as the jet production mechanism, we constrain the parameters of central engine by using the X-ray flare data. We find that the BZ mechanism is so powerful making it possible to interpret both GRB prompt emissions and bright X-ray flares. The wind parameter (p) and accreted mass (Md) fall into reasonable ranges. Our result is also applied to GRB 170817A. The late X-ray flare in GRB 170817A, if it is true, might not be a BH origin.

Abstract Copyright: © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): radiation mechanisms: non-thermal - gamma-ray burst: general

Simbad objects: 30

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Number of rows : 30
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 071031 gB 00 25 37.40 -58 03 33.9           ~ 184 0
2 GRB 050904 gB 00 54 50.794 +14 05 09.42           ~ 496 0
3 GRB 100906A gB 01 54 44.19 +55 37 49.8           ~ 233 0
4 GRB 070721B gB 02 12 32.98 -02 11 39.8           ~ 128 0
5 GRB 060906 gB 02 43 00.900 +30 21 42.12     19.84     ~ 147 0
6 GRB 070318 gB 03 13 56.830 -42 56 46.30 18.27 16.23 15.49     ~ 170 0
7 GRB 060115 gB 03 36 08.400 +17 20 43.00           ~ 179 0
8 GRB 060210 gB 03 50 57.370 +27 01 34.40   20.27       ~ 275 0
9 GRB 121024A gB 04 41 53.31 -12 17 26.1           ~ 143 0
10 GRB 060124 gB 05 08 25.900 +69 44 26.98   18.91 17.35     ~ 280 0
11 GRB 110801A gB 05 57 44.87 +80 57 21.1           ~ 90 0
12 Fermi bn080928628 gB 06 20 16.85 -55 11 59.3           ~ 187 0
13 GRB 060729 gB 06 21 31.850 -62 22 12.69           ~ 303 0
14 GRB 051016B gB 08 48 27.810 +13 39 20.00 20.45         ~ 153 0
15 GRB 070306 gB 09 52 23.220 +10 28 55.20           ~ 222 1
16 Fermi bn121211574 gB 13 02 07.99 +30 08 54.6           ~ 99 0
17 GrW 170817 GWE 13 09 48.0850 -23 22 53.343           ~ 2683 0
18 GRB 060814 gB 14 45 21.480 +20 35 11.80           ~ 241 0
19 GRB 060714 gB 15 11 26.450 -06 33 58.30   20.21 18.54     ~ 209 0
20 GRB 060526 gB 15 31 18.360 +00 17 04.90   18.31 17.16     ~ 288 0
21 GRB 060418 gB 15 45 42.600 -03 38 20.00 15.73 16.19 14.98     ~ 389 0
22 GRB 130606A gB 16 37 35.12 +29 47 46.4           ~ 185 0
23 GRB 080210 gB 16 45 04.03 +13 49 36.3           ~ 121 0
24 GRB 050814 gB 17 36 45.390 +46 20 21.60           ~ 166 0
25 Fermi bn081008832 gB 18 39 52.40 -57 25 58.8           ~ 224 0
26 Fermi bn140512814 gB 19 17 28.81 -15 05 39.5           ~ 133 0
27 GRB 130427B gB 20 59 36.00 -22 32 51.6           ~ 60 0
28 GRB 050820A gB 22 29 38.110 +19 33 37.10 18.33 19.00 18.47     ~ 409 0
29 Fermi bn080810549 gB 23 47 08.00 +00 18 35.1           ~ 240 0
30 GRB 060707 gB 23 48 19.000 -17 54 17.00     19.79     ~ 170 0

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