Maximum mass limit of neutron stars in scalar-tensor gravity
Maximum mass limit of neutron stars in scalar-tensor gravity
复制标题
标量张量引力中中子星的最大质量极限
DOI：
10.1103/physrevd.95.044032
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发表时间：
2017
影响因子：
5
通讯作者：
Kostas D. Kokkotas
中科院分区：
文献类型：
--
作者：
Hajime Sotani; Kostas D. Kokkotas
讨论了标量张量引力中中子星的最大质量极限，并与广义相对论中的极限进行了比较。极限参数化相对于核饱和参数和在核心中的最大声速的组合。结果表明，对于较小的核心声速值，标量中子星的最大质量极限大于广义相对论中的最大质量极限。然而，对于声速大于光速79%的刚性状态方程，广义相对论的最大质量极限大于标量-张量引力的最大质量极限。结果表明，未来对大质量中子星的观测可能会限制最大声速以及标量张量引力中的耦合参数。
The maximum mass limits of neutron stars in scalar-tensor gravity is discussed and compared with the limits set by general relativity. The limit is parametrized with respect to the combination of the nuclear saturation parameters and the maximum sound velocity in the core. It is shown that, for smaller values of the sound velocity in the core, the maximum mass limit of the scalarized neutron stars is larger than that in general relativity. However, for stiff equations of state with sound velocity higher than 79% of the velocity of light, the maximum mass limit in general relativity is larger than that in scalar-tensor gravity. The results suggest that future observations of massive neutron stars may constrain the maximum sound velocity as well as the coupling parameter in scalar-tensor gravity.
第157章
DOI：
10.15375/9783814557915-174
发表时间：
1988
期刊：
AktG
影响因子：
--
作者：
이은숙;홍윤식;황정웅;배정원
通讯作者：
배정원