Searching for gamma-ray counterparts to very faint X-ray transient neutron star binaries

doi:10.1088/1674-4527/18/9/109

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	Searching for gamma-ray counterparts to very faint X-ray transient neutron star binaries
	Wang, Ge-Ge 1,2; Wang, Zhong-Xiang 1
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2018-08-01
卷号	18 期号:9
关键词	Stars: Pulsars Stars: Binaries Gamma Rays: Stars
ISSN号	1674-4527
DOI	10.1088/1674-4527/18/9/109
英文摘要	Very faint X-ray transients (VFXTs) are a group of X-ray binaries with low luminosities, displaying peak X-ray luminosities during their outbursts of only 10(34)-10(36) erg s(-1). Using gamma-ray data obtained with the Large Area Telescope (LAT) onboard the Fermi Gamma-Ray Space Telescope (Fermi), we investigate their possible nature of containing rotation-powered pulsars, or more specifically being transitional millisecond pulsars (MSPs). Among more than 40 known VFXTs, we select 12 neutron star systems. We analyze the LAT data for the fields of 12 VFXTs in the energy range 0.2-300 GeV, but do not find any counterparts likely detected by Fermi. We obtain luminosity upper limits for the 12 sources. While the distances to the sources are largely uncertain, the upper limits are comparable to the luminosities of two transitional systems, PSR J1023-0038 and XSS J12270-4859. From our study, we conclude that no evidence is found at gamma-rays for the suggestion that some VFXTs could contain rotation-powered MSPs (or be transitional MSP systems).
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号	WOS:000445688500005
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/32241]
专题	中国科学院上海天文台
通讯作者	Wang, Zhong-Xiang
作者单位	1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Ge-Ge,Wang, Zhong-Xiang. Searching for gamma-ray counterparts to very faint X-ray transient neutron star binaries[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2018,18(9).
APA	Wang, Ge-Ge,&Wang, Zhong-Xiang.(2018).Searching for gamma-ray counterparts to very faint X-ray transient neutron star binaries.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,18(9).
MLA	Wang, Ge-Ge,et al."Searching for gamma-ray counterparts to very faint X-ray transient neutron star binaries".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 18.9(2018).