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New Simulations of the X-Ray Spectra and Polarizations of Accretion-disk Corona Systems with Various Geometrical Configurations I. Model Description
Yang XL(杨晓林)1,2,3,4; Wang JC(王建成)1,2,3,4; Yang CY(杨初源)1,2,3
发表期刊RESEARCH IN ASTRONOMY AND ASTROPHYSICS
2022-08-01
卷号22期号:8
DOI10.1088/1674-4527/ac7543
产权排序第1完成单位
收录类别SCI
关键词relativistic processes polarization X-rays: galaxies scattering radiation mechanisms: non-thermal
摘要

Energetic X-ray radiations emitted from various accretion systems are widely considered to be produced by Comptonization in the hot corona. The corona and its interaction with the disk play an essential role in the evolution of the system and are potentially responsible for many observed features. However, many intrinsic properties of the corona are still poorly understood, especially for the geometrical configurations. The traditional spectral fitting method is not powerful enough to distinguish various configurations. In this paper, we intend to investigate the possible configurations by modeling the polarization properties of X-ray radiations. The geometries of the corona include the slab, sphere and cylinder. The simulations are implemented through the publicly available code, Lemon, which can deal with the polarized radiative transfer and different electron distributions readily. The results demonstrate clearly that the observed polarizations are dependent heavily on the geometry of the corona. The slab-like corona produces the highest polarization degrees (PDs), followed by the cylinder and sphere. One of the interesting things is that the PDs first increase gradually and then decrease with the increase of photon energy. For slab geometry, there exists a zero-point where the polarization vanishes and the polarization angle (PA) rotates by 90 degrees. These results may potentially be verified by the upcoming missions for polarized X-ray observations, such as IXPE and eXTP.

资助项目National Natural Science Foundation of China (NSFC)[U2031111] ; National Natural Science Foundation of China (NSFC)[11573060] ; National Natural Science Foundation of China (NSFC)[12073069] ; National Natural Science Foundation of China (NSFC)[11661161010] ; National Natural Science Foundation of China (NSFC)[11673060]
项目资助者National Natural Science Foundation of China (NSFC)[U2031111, 11573060, 12073069, 11661161010, 11673060]
语种英语
学科领域天文学 ; 天体物理学 ; 高能天体物理学
学科门类理学 ; 理学::天文学
文章类型Article
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
出版地20A DATUN RD, CHAOYANG, BEIJING, 100012, PEOPLES R CHINA
ISSN1674-4527
URL查看原文
WOS记录号WOS:000830152800001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]BLACK-HOLES ; CYGNUS X-1 ; HIGH STATE ; GAMMA-RAY ; EMISSION ; JET ; COMPTONIZATION ; SCATTERING ; DENSITY ; MATRIX
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.ynao.ac.cn/handle/114a53/25382
专题高能天体物理研究组
中国科学院天体结构与演化重点实验室
通讯作者Yang XL(杨晓林)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Kunming 650216, China; yangxl@ynao.ac.cn;
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China; jcwang@ynao.ac.cn;
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing 100101, China;
4.University of Chinese Academy of Sciences, Beijing 100049, China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
推荐引用方式
GB/T 7714
Yang XL,Wang JC,Yang CY. New Simulations of the X-Ray Spectra and Polarizations of Accretion-disk Corona Systems with Various Geometrical Configurations I. Model Description[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2022,22(8).
APA Yang XL,Wang JC,&Yang CY.(2022).New Simulations of the X-Ray Spectra and Polarizations of Accretion-disk Corona Systems with Various Geometrical Configurations I. Model Description.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,22(8).
MLA Yang XL,et al."New Simulations of the X-Ray Spectra and Polarizations of Accretion-disk Corona Systems with Various Geometrical Configurations I. Model Description".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 22.8(2022).
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