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A Connection between Spectral Width and Energetics As Well As Peak Luminosity in Fermi Gamma-Ray Bursts
Peng, Z. Y.1; Zhao XH(赵晓红)2; Yin, Y3; Wang, D. Z.1
Source PublicationASTROPHYSICAL JOURNAL
2019-08-10
Volume881Issue:1Pages:12
DOI10.3847/1538-4357/ab2b9b
Contribution Rank第2完成单位
Indexed BySCI
Keywordgamma-ray burst: general methods: data analysis radiation mechanisms: general
AbstractWe have revisited the spectral width in the EFE spectrum of gamma-ray bursts with the BEST peak flux P and time-integrated F spectral data provided by the Fermi GBM Burst Catalog. We first compute the BEST spectral widths to compare with some typical physics models. Our analysis results consist with the previous results: blackbody emission alone cannot explain the observed spectrum and most of the observed spectra cannot be interpreted by the synchrotron radiation. We then check the correlations between the spectral width and the observable model-independent burst properties of duration, fluence, and peak flux and find that positive correlations exist between them for both the P and F spectra. Moreover, the short burst appears to extend the correlation found for the long burst. We further demonstrate that these positive correlations also exist in the cosmological rest frame; that is, the spectral width correlates with the isotropic-equivalent energy E-iso as well as the isotropic-equivalent peak luminosity L-iso for different energy bands and timescales. Our results show that the wider bursts have larger energy and luminosity. Moreover, short bursts would appear to extend this trend qualitatively. Taking the Amati relation into account, we tend to believe that the spectral shape is related to energy and luminosity.
Funding ProjectNational Natural Science Foundation of China[11763009] ; National Natural Science Foundation of China[11263006] ; National Natural Science Foundation of China[U1831135] ; Yunnan Natural Science Foundation[2014FB188] ; Natural Science Fund of the Education Department of Guizhou Province[KY2015455] ; Natural Science Fund of the Liupanshui Normal College[LPSSY201401]
Funding OrganizationNational Natural Science Foundation of China[11763009] ; National Natural Science Foundation of China[11263006] ; National Natural Science Foundation of China[U1831135] ; Natural Science Foundation of Yunnan Province[2014FB188] ; Natural Science Fund of the Education Department of Guizhou Province[KY2015455] ; Natural Science Fund of the Liupanshui Normal College[LPSSY201401]
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000481512800012
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordBATSE OBSERVATIONS ; ENERGY ; CLASSIFICATION ; EMISSION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/20869
Collection丽江天文观测站(南方基地)
Corresponding AuthorPeng, Z. Y.
Affiliation1.College of Physics and Electronics, Yunnan Normal University, Kunming 650500, People's Republic of China
2.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, People's Republic of China
3.Department of Electrical Engineering, Liupanshui Normal University, LiuPanShui 553004, People's Republic of China
Recommended Citation
GB/T 7714
Peng, Z. Y.,Zhao XH,Yin, Y,et al. A Connection between Spectral Width and Energetics As Well As Peak Luminosity in Fermi Gamma-Ray Bursts[J]. ASTROPHYSICAL JOURNAL,2019,881(1):12.
APA Peng, Z. Y.,Zhao XH,Yin, Y,&Wang, D. Z..(2019).A Connection between Spectral Width and Energetics As Well As Peak Luminosity in Fermi Gamma-Ray Bursts.ASTROPHYSICAL JOURNAL,881(1),12.
MLA Peng, Z. Y.,et al."A Connection between Spectral Width and Energetics As Well As Peak Luminosity in Fermi Gamma-Ray Bursts".ASTROPHYSICAL JOURNAL 881.1(2019):12.
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