Phase-averaged gamma-ray spectra from rotation-powered millisecond pulsars

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	Phase-averaged gamma-ray spectra from rotation-powered millisecond pulsars
	Jiang ZJ(姜泽军)1,2 ; Chen, SB 1,3; Li, X1 ; Zhang, L1
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2014-01
卷号	437 期号:3 页码:2957-2965
关键词	radiation mechanisms: non-thermal pulsars: general
ISSN号	0035-8711
通讯作者	Jiang, ZJ (reprint author), Yunnan Univ, Dept Phys, Kunming 650091, Peoples R China.
产权排序	第二完成单位
英文摘要	Fermi Large Area Telescope (LAT) has detected pulsed gamma-ray emissions with high confidences from more than 40 millisecond pulsars (MSPs). Here we study the phase-averaged gamma-ray properties of MSPs by using revised version of a self-consistent outer gap model. In this model, a strong multipole magnetic field near the stellar surface for an MSP is assumed and such a field will be close to the surface magnetic fields (similar to 10(11)-10(12) G) of young pulsars; the outer gap of an MSP is controlled by photon-photon pair production process, where the effects of magnetic inclination angle (alpha) and magnetic geometry have been taken into account. Therefore, the fractional size of the outer gap is a function of not only pulsar's period and magnetic field strength but also magnetic inclination angle and radial distance to the neutron star; the inner boundary of the outer gap can be estimated by the pair production process of the gamma-ray photons which are produced by the back-flowing particles through the null charge surface; inside the outer gap, a Gaussian distribution of the parallel electric field along the trans-field thickness is assumed, and the gamma-ray emission is represented by the emission from the average radial distance along the central field lines of the outer gap. Using this model, the phase-averaged gamma-ray spectra are calculated and compared with the observed spectra of 37 MSPs given by the second Fermi-LAT catalogue of gamma-ray pulsars; our results show that the Fermi-LAT results can be well explained by this model. The thermal X-ray emission properties from MSPs are also investigated.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Science
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	LARGE-AREA TELESCOPE ; RAPIDLY SPINNING PULSARS ; RESOLVED X-RAY ; CRAB PULSAR ; LIGHT CURVES ; SLOT GAPS ; OUTER MAGNETOSPHERE ; UNASSOCIATED SOURCES ; ENERGETIC RADIATION ; TIMING OBSERVATIONS
收录类别	SCI
原文出处	http://mnras.oxfordjournals.org/content/437/3/2957
语种	英语
WOS记录号	WOS:000329158900074
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4254]
专题	云南天文台_其他
作者单位	1.Department of Physics, Yunnan University, 650091 Kunming, China 2.Yunnan Observatories, Chinese Academy of Sciences, 650011 Kunming, China 3.Department of Physical Science and Technology, Kunming University, 650214 Kunming, China
推荐引用方式 GB/T 7714	Jiang ZJ,Chen, SB,Li, X,et al. Phase-averaged gamma-ray spectra from rotation-powered millisecond pulsars[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,437(3):2957-2965.
APA	Jiang ZJ,Chen, SB,Li, X,&Zhang, L.(2014).Phase-averaged gamma-ray spectra from rotation-powered millisecond pulsars.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,437(3),2957-2965.
MLA	Jiang ZJ,et al."Phase-averaged gamma-ray spectra from rotation-powered millisecond pulsars".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 437.3(2014):2957-2965.