J/ApJ/866/97 Swift X-ray flash & rich gamma-ray bursts in BAT3 (Bi+, 2018)
Statistical study of the Swift X-ray flash and X-ray rich gamma-ray bursts.
Bi X., Mao J., Liu C., Bai J.-M.
<Astrophys. J., 866, 97 (2018)>
=2018ApJ...866...97B 2018ApJ...866...97B
ADC_Keywords: GRB; Redshifts; X-ray sources
Keywords: gamma rays: general ; radiation mechanisms: non-thermal
Abstract:
We build a comprehensive sample to statistically describe the
properties of X-ray flashes (XRFs) and X-ray riches (XRRs) from the
third Swift Burst Alert Telescope (BAT3) catalog of Gamma-ray bursts
(GRBs). We obtain 81 XRFs, 540 XRRs, and 394 classical GRBs (C-GRBs).
We statistically explore the different properties of the γ-ray
prompt emission, the X-ray emission, the X-ray light-curve type, the
association with supernovae (SNe), and the host galaxy properties for
these sources. We confirm that most XRFs/XRRs are long GRBs with low
values of peak energy Epeakobs and they are low-luminosity GRBs.
XRFs, XRRs, and C-GRBs follow the same EX,iso-Eγ,iso-Epeak,z
correlations. Compared to the classical GRBs, XRFs are favorable to
have the association with SN explosions. We do not find any
significant differences of redshift distribution and host galaxy
properties among XRFs, XRRs, and C-GRBs. We also discuss some
observational biases and selection effects that may affect our
statistical results. The GRB detectors with wide energy range and low
energy threshold are expected for the XRF/XRR research in the future.
Description:
We utilize the latest third Swift-BAT3 catalog (Lien+, 2016,
J/ApJ/829/7), which contains 1104 GRBs detected from 2004 December 17
to 2016 December 2, to systematically investigate the statistical
properties of X-ray flashes (XRFs) and X-ray riches (XRRs).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 114 621 X-ray flash (XRF) and X-ray rich (XRR) samples
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See also:
J/A+A/508/593 : GRB 080710 bright optical/NIR afterglow (Kruehler+, 2009)
J/ApJS/195/2 : The second Swift BAT GRB catalog (BAT2) (Sakamoto+, 2011)
J/ApJS/209/20 : Swift GRB catalog with X-ray data (Grupe+, 2013)
J/MNRAS/428/729 : GRB Swift X-ray light curves analysis (Margutti+, 2013)
J/ApJ/774/157 : Swift GRBs with X-ray afterglows and z<9.5 (Dainotti+, 2013)
J/ApJS/224/20 : 10yr of Swift/XRT obs. of GRBs (Yi+, 2016)
J/ApJ/826/45 : GRB X-ray afterglows light curves analysis (Racusin+, 2016)
J/ApJ/829/7 : 3rd Swift/BAT GRB catalog (past ∼11yrs) (BAT3) (Lien+, 2016)
J/ApJ/852/53 : Early X-ray flares in GRBs (Ruffini+, 2018)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Type XRR (540 occurrences) or
XRF (81 occurrences)
5- 11 A7 --- GRB GRB identifier
12 A1 --- --- [-]
13 I1 --- m_GRB ? Multiple component on GRB identifier
19- 25 F7.5 --- z [0.03/9.4]? Spectroscopic redshift
27- 32 F6.2 s T90 [0.02/779]? GRB duration time
34- 38 F5.2 --- alphaPL [-3.2/-0.6] Simple power-law model
photon index (1)
40- 43 F4.2 --- e_alphaPL [0.01/1]? Uncertainty in alphaPL
45- 49 F5.2 --- alphaCPL [-2.5/3.4] Cutoff power-law model
photon index (1)
51- 54 F4.2 --- E_alphaCPL [0.01/4]? Lower uncertainty in alphaCPL
56- 59 F4.2 --- e_alphaCPL [0.01/1.5]? Upper uncertainty in alphaCPL
61- 67 F7.1 10-8mJ/m2 S15-150 [0.1/10891]? Fluence of 15-150keV band
in units of 10-8erg/cm2 (1)
69- 73 F5.1 10-8mJ/m2 e_S15-150 [0.1/70]? Uncertainty in S15-150
75- 79 F5.2 --- SR [0.7/54] Fluence ratio; 25-50keV/50-100keV
81- 85 F5.2 --- e_SR [0.01/44]? Uncertainty in SR
87- 93 F7.2 keV Epeak [0.9/1780]? Observed peak energy
95-100 F6.1 keV E_Epeak [0.3/3961]? Upper uncertainty in Epeak
102-106 F5.1 keV e_Epeak [0.2/300]? Lower uncertainty in Epeak
108-114 A7 --- r_Epeak Reference for Epeak (2)
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Note (1): From Lien+ (2016, J/ApJ/829/7)
Note (2): Reference as follows:
Ama08 = Amati, et al. (2008MNRAS.391..577A 2008MNRAS.391..577A);
Ama09 = Amati, et al. (2009A&A...508..173A 2009A&A...508..173A);
Can07 = Cano, et al. (2017AdAst2017E...5C 2017AdAst2017E...5C);
Gru13 = Grupe et al. (2013, J/ApJS/209/20);
Lia15 = Liang et al. (2015ApJ...813..116L 2015ApJ...813..116L);
Lie16 = Lien et al. (2016, J/ApJ/829/7);
Zan16 = Zaninoni et al. (2016MNRAS.455.1375Z 2016MNRAS.455.1375Z);
GCN5518 = Golentskii et al (2006GCN..5518....1G 2006GCN..5518....1G).
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 07-Oct-2019