期刊
NATURE ASTRONOMY
卷 4, 期 6, 页码 625-632出版社
NATURE PORTFOLIO
DOI: 10.1038/s41550-020-1014-6
关键词
-
资金
- US National Science Foundation [PHY-1430152, PHY-1707954]
- US Department of Energy [DE-FG02-00ER41132]
- NASA Hubble Fellowship - Space Telescope Science Institute [HST-HF2-51412.001-A]
- NASA [NAS5-26555]
- US Department of Energy, Office of Science, Office of Nuclear Physics [DE-AC52-06NA25396]
- Los Alamos National Laboratory (LANL) LDRD programme
- NUCLEI SciDAC programme
- National Science Foundation [NSF PHY-1748958]
- French Centre National de Recherche Scientifique (CNRS)
- Italian Istituto Nazionale della Fisica Nucleare (INFN)
- Dutch Nikhef
- Polish institute
- Hungarian institute
The properties of neutron stars are determined by the nature of the matter that they contain. These properties can be constrained by measurements of the star's size. We obtain stringent constraints on neutron-star radii by combining multimessenger observations of the binary neutron-star merger GW170817 with nuclear theory that best accounts for density-dependent uncertainties in the equation of state. We construct equations of state constrained by chiral effective field theory and marginalize over these using the gravitational-wave observations. Combining this with the electromagnetic observations of the merger remnant that imply the presence of a short-lived hypermassive neutron star, we find that the radius of a 1.4 M-circle dot neutron star is R1.4M circle dot=11.0-0.6+0.9km (90% credible interval). Using this constraint, we show that neutron stars are unlikely to be disrupted in neutron star-black hole mergers; subsequently, such events will not produce observable electromagnetic emission.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据