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SPINS OF SUPERMASSIVE BLACK HOLES IN M87. II. FULLY GENERAL RELATIVISTIC CALCULATIONS
Li, YR1; Yuan, YF2; Wang, JM1,3; Wang JC(王建成)4; Zhang, S1; Li, YR (reprint author), CAS, Inst High Energy Phys, Key Lab Particle Astrophys, 19B Yuquan Rd, Beijing 100049, Peoples R China.
发表期刊ASTROPHYSICAL JOURNAL
2009-07-01
卷号699期号:1页码:513-524
DOI10.1088/0004-637X/699/1/513
产权排序第4完成单位
收录类别SCI
关键词Black Hole Physics Galaxies: Individual (M87)
摘要The fast variability of energetic TeV photons from the center of M87 has been detected, offering a new clue to estimate spins of supermassive black holes (SMBHs). We extend the study of Wang et al. by including all of the general relativistic effects. We numerically solve the full set of relativistic hydrodynamical equations of the radiatively inefficient accretion flows (RIAFs) and then obtain the radiation fields around the black hole. The optical depth of the radiation fields to TeV photons due to pair productions is calculated in the Kerr metric. We find that the optical depth strongly depends on (1) accretion rates as tau(TeV) proportional to (M) over dot(2.5-5.0), (2) black hole spins, and (3) location of the TeV source. Jointly considering the optical depth and the spectral energy distribution radiated from the RIAFs, the strong degeneration of the spin with the other free parameters in the RIAF model can be largely relaxed. We apply the present model to M87, wherein the RIAFs are expected to be at work, and find that the minimum specific angular momentum of the hole is a similar to 0.8. The present methodology is applicable to M87-like sources with future detection of TeV emissions to constrain the spins of SMBHs.
项目资助者NSFC ; CAS [NSFC-10325313, 10821061, 10521001, 10673010, 10573016, KJCX2-YW-T03] ; 973 project [2009CB824800]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
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WOS记录号WOS:000267056300041
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ADVECTION-DOMINATED ACCRETION ; ACTIVE GALACTIC NUCLEI ; GAMMA-RAYS ; VLBI OBSERVATIONS ; SCALE STRUCTURE ; A-ASTERISK ; JET ; EMISSION ; DISK ; VARIABILITY
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被引频次:44[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/4980
专题高能天体物理研究组
通讯作者Li, YR (reprint author), CAS, Inst High Energy Phys, Key Lab Particle Astrophys, 19B Yuquan Rd, Beijing 100049, Peoples R China.
作者单位1.Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, CAS, 19B Yuquan Road, Beijing 100049, China
2.Key Laboratory for Research in Galaxies and Cosmology, University of Sciences and Technology of China, CAS, Hefei, Anhui 230026, China
3.Theoretical Physics Center for Science Facilities (TPCSF), CAS
4.Yunnan Observatory, CAS, Kunming 650011, China
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Li, YR,Yuan, YF,Wang, JM,et al. SPINS OF SUPERMASSIVE BLACK HOLES IN M87. II. FULLY GENERAL RELATIVISTIC CALCULATIONS[J]. ASTROPHYSICAL JOURNAL,2009,699(1):513-524.
APA Li, YR,Yuan, YF,Wang, JM,Wang JC,Zhang, S,&Li, YR .(2009).SPINS OF SUPERMASSIVE BLACK HOLES IN M87. II. FULLY GENERAL RELATIVISTIC CALCULATIONS.ASTROPHYSICAL JOURNAL,699(1),513-524.
MLA Li, YR,et al."SPINS OF SUPERMASSIVE BLACK HOLES IN M87. II. FULLY GENERAL RELATIVISTIC CALCULATIONS".ASTROPHYSICAL JOURNAL 699.1(2009):513-524.
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