Constraining the mass and radius of neutron stars in globular clusters
文献类型：期刊论文
| 作者 | Steiner, A. W.1,2; Heinke, C. O.3; Bogdanov, S.4; Li, C. K.3,5; Ho, W. C. G.6,7; Bahramian, A.3,8; Han, S.1 |
| 刊名 | Monthly notices of the royal astronomical society
 |
| 出版日期 | 2018-05-01 |
| 卷号 | 476期号:1页码:421-435 |
| ISSN号 | 0035-8711 |
| 关键词 | Dense matter Stars: neutron Globular clusters: general X-rays: binaries |
| DOI | 10.1093/mnras/sty215 |
| 通讯作者 | Steiner, a. w.(awsteiner@utk.edu) ; Heinke, c. o.(heinke@ualberta.ca) ; Bogdanov, s.(slavko@astro.columbia.edu) |
| 英文摘要 | We analyse observations of eight quiescent low-mass x-ray binaries in globular clusters and combine them to determine the neutron star mass-radius curve and the equation of state of dense matter. we determine the effect that several uncertainties may have on our results, including uncertainties in the distance, the atmosphere composition, the neutron star maximum mass, the neutron star mass distribution, the possible presence of a hotspot on the neutron star surface, and the prior choice for the equation of state of dense matter. the distance uncertainty is implemented in a new gaussian blurring method that can be directly applied to the probability distribution over mass and radius. we find that the radius of a 1.4 solar mass neutron star is most likely from 10 to 14 km and that tighter constraints are only possible with stronger assumptions about the nature of the neutron stars, the systematics of the observations, or the nature of dense matter. strong phase transitions in the equation of state are preferred, and in this case, the radius is likely smaller than 12 km. however, radii larger than 12 km are preferred if the neutron stars have uneven temperature distributions. |
| WOS关键词 | X-RAY BINARY ; EQUATION-OF-STATE ; HORIZONTAL-BRANCH MORPHOLOGY ; RELATIVE DISTANCES ; OMEGA-CENTAURI ; AQUILA X-1 ; 47 TUCANAE ; NGC 6304 ; CEN X-4 ; QUIESCENT |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000429276700034 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2178188 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Steiner, A. W.; Heinke, C. O.; Bogdanov, S. |
| 作者单位 | 1.Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA 2.Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA 3.Univ Alberta, Dept Phys, CCIS 4-183, Edmonton, AB T6G 2E1, Canada 4.Columbia Univ, Columbia Astrophys Lab, 550 West 120th St, New York, NY 10027 USA 5.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, 19B Yuquan Rd, Beijing 100049, Peoples R China 6.Univ Southampton, Math Sci Phys & Astron, Southampton SO17 1BJ, Hants, England 7.Univ Southampton, STAG Res Ctr, Southampton SO17 1BJ, Hants, England 8.Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA |
| 推荐引用方式 GB/T 7714 | Steiner, A. W.,Heinke, C. O.,Bogdanov, S.,et al. Constraining the mass and radius of neutron stars in globular clusters[J]. Monthly notices of the royal astronomical society,2018,476(1):421-435. |
| APA | Steiner, A. W..,Heinke, C. O..,Bogdanov, S..,Li, C. K..,Ho, W. C. G..,...&Han, S..(2018).Constraining the mass and radius of neutron stars in globular clusters.Monthly notices of the royal astronomical society,476(1),421-435. |
| MLA | Steiner, A. W.,et al."Constraining the mass and radius of neutron stars in globular clusters".Monthly notices of the royal astronomical society 476.1(2018):421-435. |
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