期刊
ASTROPHYSICAL JOURNAL
卷 866, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/1538-4357/aadcf8
关键词
gamma rays: general; radiation mechanisms: non-thermal
资金
- Open Project Program of the Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences [OP201501]
- Scientific Research Foundation of the Education Department of Yunnan Province [2014Y463]
- National Natural Science Foundation of China [11433004, 11404103, 11673062, 11661161010]
- Hundred Talent Program
- Major Program of the Chinese Academy of Sciences [KJZD-EW-M06]
- Oversea Talent Program of Yunnan Province
- Ministry of Science and Technology of China [2016YFA0400700]
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.-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 Epeak obs and they are low-luminosity GRBs. XRFs, XRRs, and C-GRBs follow the same EX, iso-E., 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.
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