On the detection probability of neutron star glitches

doi:10.1093/mnras/stx702

	On the detection probability of neutron star glitches
	Yu, M.1,2; Liu, Q. -J.3
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2017-07-01
卷号	468 期号:3 页码:3031-3041
关键词	stars: neutron pulsars: general
ISSN号	0035-8711
DOI	10.1093/mnras/stx702
通讯作者	Yu, M.(vela.yumeng@gmail.com)
英文摘要	Neutron stars are observed to undergo small, abrupt rotational speed-up. This phenomenon is known as glitch. In pulsar timing observations, detection of a neutron star glitch is constrained by the time of occurrence of the event relative to entire observing span and observing cadences, time of occurrence of preceding/subsequent glitches relative to observing cadences and the strength of timing noise. Using the Yu et al. data sets, in this paper, we analyse the observational selection in terms of detection probability. We define partial probabilities for the constraints and use the Monte Carlo method with assuming glitches distribute uniformly to solve the complete probability formula for both group case involving 157 pulsars and individual cases for each of the seven pulsars with glitch numbers >= 5. In the simulations, numerical Bayesian inference is used for glitch identification. With the derived detection probability density and observed results, we uncover glitch size probability distribution embedded in the data for both the group and individual cases. We find the most prominent correction occurred for PSR J1341-6220, in which the exponent of the power-law model varies from the observed +0.7(-0.7)(+1.4) to -0.4(-0.4)(+1 .0). We suggest observers determine the detection probability for glitch theories, e.g. the self-organized criticality.
WOS关键词	PULSAR TIMING ANALYSIS ; TIME-SERIES ANALYSIS ; SOUTHERN PULSARS ; CRAB PULSAR ; SPACED DATA ; NOISE ; MODEL ; PACKAGE ; TEMPO2
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000402808700042
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/23036]
专题	中国科学院紫金山天文台
通讯作者	Yu, M.
作者单位	1.Chinese Acad Sci, Nat Astron Observ China, 20A Datun Rd, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, 20A Datun Rd, Beijing 100012, Peoples R China 3.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Yu, M.,Liu, Q. -J.. On the detection probability of neutron star glitches[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,468(3):3031-3041.
APA	Yu, M.,&Liu, Q. -J..(2017).On the detection probability of neutron star glitches.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,468(3),3031-3041.
MLA	Yu, M.,et al."On the detection probability of neutron star glitches".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 468.3(2017):3031-3041.