A model of neutron-star-white-dwarf collision for fast radio bursts

doi:10.1007/s10509-018-3462-3

	A model of neutron-star-white-dwarf collision for fast radio bursts
	Liu, Xiang 1,2
刊名	ASTROPHYSICS AND SPACE SCIENCE
	2018-11-01
卷号	363 期号:11 页码:8
关键词	Pulsars: general Radio continuum: general Scattering
ISSN号	0004-640X
DOI	10.1007/s10509-018-3462-3
通讯作者	Liu, Xiang(liux@xao.ac.cn)
英文摘要	Fast radio bursts (FRBs) with unknown origin emit a huge luminosity (about 1Jy at 1GHz) with a duration of milliseconds or less at extragalactic distances estimated from their large dispersion measure (DM). We propose herein a scenario for a collision between a neutron star (NS) and a white dwarf (WD) as the progenitor of the FRBs by considering the burst duration scaling to the collision time and the radio luminosity proportional to the kinetic energy of the collision. The relations among the observed flux density, pulse width, and the DM are derived from the model and compared with the statistical results from the observed FRBs. Although the sample is quite small, we tentatively report a nearly inverse-square correlation between the observed peak flux density and the DM excess, which is an consequence of the assumption that the DM excess (i.e. that not due to our Galaxy) is dominated by the intergalactic medium. We also tentatively note a correlation among the duration of the FRB and the DM excess (possibly interpreted as due to the broadening of the signal in the intergalactic medium) and a correlation among the duration of the FRB and the flux density (shorter burst should be brighter), both roughly in agreement with the proposed model.
WOS关键词	REIONIZATION HISTORY ; HOST GALAXY ; BINARY ; ORIGIN ; LOCALIZATION ; ENVIRONMENT ; DISPERSION ; MERGER
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000448791300002
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/21010]
专题	中国科学院紫金山天文台
通讯作者	Liu, Xiang
作者单位	1.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiang. A model of neutron-star-white-dwarf collision for fast radio bursts[J]. ASTROPHYSICS AND SPACE SCIENCE,2018,363(11):8.
APA	Liu, Xiang.(2018).A model of neutron-star-white-dwarf collision for fast radio bursts.ASTROPHYSICS AND SPACE SCIENCE,363(11),8.
MLA	Liu, Xiang."A model of neutron-star-white-dwarf collision for fast radio bursts".ASTROPHYSICS AND SPACE SCIENCE 363.11(2018):8.