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DETERMINING THE DISTANCE OF Cyg X-3 WITH ITS X-RAY DUST SCATTERING HALO
Ling, ZX; Zhang SN(张双南); Zhang, SN; Tang, SC
2009
发表期刊ASTROPHYSICAL JOURNAL
卷号695期号:2页码:1111-1120
通讯作者[Ling, Zhixing ; Zhang, Shuang Nan ; Tang, Shichao] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China ; [Ling, Zhixing ; Zhang, Shuang Nan ; Tang, Shichao] Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China ; [Zhang, Shuang Nan] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China ; [Zhang, Shuang Nan] Univ Alabama, Dept Phys, Huntsville, AL 35899 USA
摘要Using a cross-correlation method, we study the X-ray halo of Cyg X-3. Two components of dust distributions are needed to explain the time lags derived by the cross-correlation method. Assuming the distance as 1.7 kpc for Cyg OB2 association (a richest OB association in the local Galaxy) and another uniform dust distribution, we get a distance of 7.2(-0.5)(+0.3) kpc (68% confidence level) for Cyg X-3. When using the distance estimation of Cygnus OB2 as 1.38 or 1.82 kpc, the inferred distance for Cyg X-3 is 3.4(-0.2)(+0.2) or 9.3(-0.4)(+0.6) kpc, respectively. The distance estimation uncertainty of Cyg X-3 is mainly related to the distance of the Cyg OB2, which may be improved in the future with high-precision astrometric measurements. The advantage of this method is that the result depends weakly on the photon energy, dust grain radius, scattering cross-section, and so on.
文章类型Article
关键词dust, extinction scattering X-rays: binaries X-rays: ISM
学科领域Astronomy & Astrophysics
DOI10.1088/0004-637X/695/2/1111
研究领域[WOS]Astronomy & Astrophysics
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语种英语
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000265018300030
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被引频次:36[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239064
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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Ling, ZX,Zhang SN,Zhang, SN,et al. DETERMINING THE DISTANCE OF Cyg X-3 WITH ITS X-RAY DUST SCATTERING HALO[J]. ASTROPHYSICAL JOURNAL,2009,695(2):1111-1120.
APA Ling, ZX,张双南,Zhang, SN,&Tang, SC.(2009).DETERMINING THE DISTANCE OF Cyg X-3 WITH ITS X-RAY DUST SCATTERING HALO.ASTROPHYSICAL JOURNAL,695(2),1111-1120.
MLA Ling, ZX,et al."DETERMINING THE DISTANCE OF Cyg X-3 WITH ITS X-RAY DUST SCATTERING HALO".ASTROPHYSICAL JOURNAL 695.2(2009):1111-1120.
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