MULTI-WAVELENGTH STUDY OF THE Be/X-RAY BINARY MXB 0656-072

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 宇宙伽马暴、中子星及相关物理研究团组

	MULTI-WAVELENGTH STUDY OF THE Be/X-RAY BINARY MXB 0656-072
	Yan, Jingzhi1,2 ; Heras, Juan Antonio Zurita 2; Chaty, Sylvain 2; Li, Hui1,3 ; Liu, Qingzhong 1,3
刊名	ASTROPHYSICAL JOURNAL
	2012-07-01
卷号	753 期号:1 页码:73(11pp)
关键词	stars: emission-line, Be stars: individual (MXB 0656-072) stars: neutron X-rays: binaries
ISSN号	0004-637X
英文摘要	We present and analyze the optical photometric and spectroscopic data of the Be/X-ray binary MXB 0656-072 from 2006 to 2009. A 101.2 day orbital period is found, for the first time, from the present public X-ray data (Swift/BAT and RXTE/ASM). The anti-correlation between the Ha emission and the UBV brightness of MXB 0656-072 during our 2007 observations indicates that a mass ejection event took place in the system. After the mass ejection, a low-density region might develop around the Oe star. With the outward motion of the circumstellar disk, the outer part of the disk interacted with the neutron star around its periastron passage and a series of X-ray outbursts were triggered between MJD 54350 and MJD 54850. The Proportional Counter Array-HEXTE spectra during the 2007-2008 X-ray outbursts could be well fitted by a cutoff power law with low-energy absorption, together with an iron line around 6.4 keV, and a broad cyclotron resonance feature around 30 keV. The same variability of the soft and hard X-ray colors in 2.3-21 keV indicated that there were no overall changes in the spectral shape during the X-ray outbursts, which might only be connected with the changes of the mass accretion rate onto the neutron star.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	TIMING-EXPLORER ; X-PERSEI ; STARS ; VARIABILITY ; CASSIOPEIAE ; ENVELOPES ; CATALOG ; PULSARS
收录类别	SCI
语种	英语
WOS记录号	WOS:000305632500073
公开日期	2013-01-31
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/8089]
专题	紫金山天文台_宇宙伽马暴、中子星及相关物理研究团组
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 2.Univ Paris Diderot, Lab AIM, Serv Astrophys, CEA,DSM,CNRS,IRFU, FR-91191 Gif Sur Yvette, France 3.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Yan, Jingzhi,Heras, Juan Antonio Zurita,Chaty, Sylvain,et al. MULTI-WAVELENGTH STUDY OF THE Be/X-RAY BINARY MXB 0656-072[J]. ASTROPHYSICAL JOURNAL,2012,753(1):73(11pp).
APA	Yan, Jingzhi,Heras, Juan Antonio Zurita,Chaty, Sylvain,Li, Hui,&Liu, Qingzhong.(2012).MULTI-WAVELENGTH STUDY OF THE Be/X-RAY BINARY MXB 0656-072.ASTROPHYSICAL JOURNAL,753(1),73(11pp).
MLA	Yan, Jingzhi,et al."MULTI-WAVELENGTH STUDY OF THE Be/X-RAY BINARY MXB 0656-072".ASTROPHYSICAL JOURNAL 753.1(2012):73(11pp).