MULTI-WAVELENGTH EMISSIONS FROM THE MILLISECOND PULSAR BINARY PSR J1023+0038 DURING AN ACCRETION ACTIVE STATE

	MULTI-WAVELENGTH EMISSIONS FROM THE MILLISECOND PULSAR BINARY PSR J1023+0038 DURING AN ACCRETION ACTIVE STATE
	Takata, J.1; Li, K. L.2,3; Leung, Gene C. K.1; Kong, A. K. H.2,3; Tam, P. H. T.2,3; Hui, C. Y.4; Wu, E. M. H.1; Xing, Yi2,3,5 ; Cao, Yi 6; Tang, Sumin 6,7
刊名	ASTROPHYSICAL JOURNAL
	2014-04-20
卷号	785 期号:2 页码:131
关键词	accretion accretion disks binaries: close pulsars: individual (PSR J1023+0038)
通讯作者	王仲翔
英文摘要	Recent observations strongly suggest that themillisecond pulsar binary PSR J1023+0038 has developed an accretion disk since 2013 June. We present amulti-wavelength analysis of PSR J1023+0038, which reveals that (1) its gamma-rays suddenly brightened within a few days in 2013 June/July and has remained at a high gamma-ray state for several months; (2) both UV and X-ray fluxes have increased by roughly an order of magnitude; and (3) the spectral energy distribution has changed significantly after the gamma-ray sudden flux change. Time variabilities associated with UV and X-rays are on the order of 100-500 s and 50-100 s, respectively. Our model suggests that a newly formed accretion disk, due to the sudden increase of the stellar wind, could explain the changes of all these observed features. The increase of UV is emitted from the disk, and a new component in gamma-rays is produced by inverse Compton scattering between the new UV component and pulsar wind. The increase of X-rays results from the enhancement of injection pulsar wind energy into the intra-binary shock due to the increase of the stellar wind. We also predict that the radio pulses may be blocked by the evaporated winds from the disk, and the pulsar is still powered by rotation.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	X-RAY ; 1ST J102347.6+003841 ; RADIO-EMISSION ; LIGHT CURVES ; ROTATION ; TRANSITION ; STARS ; WIND ; DISK ; LINK
收录类别	SCI
语种	英语
WOS记录号	WOS:000335736800050
公开日期	2015-02-14
内容类型	期刊论文
源URL	[http://119.78.226.72//handle/331011/15808]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China 2.Natl Tsing Hua Univ, Inst Astron, Hsinchu 30013, Taiwan 3.Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan 4.Chungnam Natl Univ, Dept Astron & Space Sci, Taejon, South Korea 5.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 6.CALTECH, Dept Astron, Pasadena, CA 91125 USA 7.Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA
推荐引用方式 GB/T 7714	Takata, J.,Li, K. L.,Leung, Gene C. K.,et al. MULTI-WAVELENGTH EMISSIONS FROM THE MILLISECOND PULSAR BINARY PSR J1023+0038 DURING AN ACCRETION ACTIVE STATE[J]. ASTROPHYSICAL JOURNAL,2014,785(2):131.
APA	Takata, J..,Li, K. L..,Leung, Gene C. K..,Kong, A. K. H..,Tam, P. H. T..,...&Cheng, K. S..(2014).MULTI-WAVELENGTH EMISSIONS FROM THE MILLISECOND PULSAR BINARY PSR J1023+0038 DURING AN ACCRETION ACTIVE STATE.ASTROPHYSICAL JOURNAL,785(2),131.
MLA	Takata, J.,et al."MULTI-WAVELENGTH EMISSIONS FROM THE MILLISECOND PULSAR BINARY PSR J1023+0038 DURING AN ACCRETION ACTIVE STATE".ASTROPHYSICAL JOURNAL 785.2(2014):131.