YNOGK: A NEW PUBLIC CODE FOR CALCULATING NULL GEODESICS IN THE KERR SPACETIME
文献类型：期刊论文
| 作者 | Yang XL(杨晓林)1,2,3 ; Wang JC(王建成)1,2
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| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
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| 出版日期 | 2013-07 |
| 卷号 | 207期号:1页码:6-37 |
| 关键词 | accretion, accretion disks black hole physics radiative transfer relativistic processes |
| ISSN号 | 0067-0049 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Yang, XL (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China. |
| 英文摘要 | Following the work of Dexter & Agol, we present a new public code for the fast calculation of null geodesics in the Kerr spacetime. Using Weierstrass's and Jacobi's elliptic functions, we express all coordinates and affine parameters as analytical and numerical functions of a parameter p, which is an integral value along the geodesic. This is the main difference between our code and previous similar ones. The advantage of this treatment is that the information about the turning points does not need to be specified in advance by the user, and many applications such as imaging, the calculation of line profiles, and the observer-emitter problem, become root-finding problems. All elliptic integrations are computed by Carlson's elliptic integral method as in Dexter & Agol, which guarantees the fast computational speed of our code. The formulae to compute the constants of motion given by Cunningham & Bardeen have been extended, which allow one to readily handle situations in which the emitter or the observer has an arbitrary distance from, and motion state with respect to, the central compact object. The validation of the code has been extensively tested through applications to toy problems from the literature. The source FORTRAN code is freely available for download on our Web site http://www1.ynao.ac.cn/similar to yangxl/yxl.html. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACCRETING BLACK-HOLES ; ACTIVE GALACTIC NUCLEI ; QUASI-PERIODIC OSCILLATIONS ; EMISSION-LINE PROFILES ; ELLIPTIC INTEGRALS ; DISK ; TABLE ; GALAXY ; RADIATION ; SPECTRUM |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.1088/0067-0049/207/1/6/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000322631500006 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5032]  |
| 专题 | 云南天文台_高能天体物理研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.National Astronomical Observatories, Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China 3.Graduate School, Chinese Academy of Sciences, Beijing, China |
| 推荐引用方式 GB/T 7714 | Yang XL,Wang JC. YNOGK: A NEW PUBLIC CODE FOR CALCULATING NULL GEODESICS IN THE KERR SPACETIME[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2013,207(1):6-37. |
| APA | Yang XL,&Wang JC.(2013).YNOGK: A NEW PUBLIC CODE FOR CALCULATING NULL GEODESICS IN THE KERR SPACETIME.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,207(1),6-37. |
| MLA | Yang XL,et al."YNOGK: A NEW PUBLIC CODE FOR CALCULATING NULL GEODESICS IN THE KERR SPACETIME".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 207.1(2013):6-37. |
入库方式： OAI收割
来源：云南天文台
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