Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Wei-Xiang Feng"'
Autor:
Wei-Xiang Feng
Publikováno v:
Astronomy, Vol 2, Iss 1, Pp 22-46 (2023)
In this note, I derive the Chandrasekhar instability of a fluid sphere in (N + 1)-dimensional Schwarzschild–Tangherlini spacetime and take the homogeneous (uniform energy density) solution for illustration. Qualitatively, the effect of a positive (
Externí odkaz:
https://doaj.org/article/2fbd7a44cf514f04b05e93007b2f6e63
Autor:
Wei-Xiang Feng
In this note, I derive the Chandrasekhar instability of a fluid sphere in ($N$+1)-dimensional Schwarzschild-Tangherlini spacetime and take the homogeneous (uniform energy density) solution for illustration. Qualitatively, the effect of positive (nega
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd7b81239f9aaa4269cc66416e437400
https://doi.org/10.21203/rs.3.rs-2090856/v1
https://doi.org/10.21203/rs.3.rs-2090856/v1
Autor:
Wei-Xiang Feng
In the framework of gravothermal evolution of an ideal monatomic fluid, I examine the dynamical instability of the fluid sphere in ($N$+1) dimensions by exploiting Chandrasekhar's criterion to each quasistatic equilibrium along the sequence of the ev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6e0b857b2d7b9b7d069cbebafeb1695
http://arxiv.org/abs/2207.14317
http://arxiv.org/abs/2207.14317
We consider the spike mass density profile in a dark halo by self-consistently solving the relativistic Bondi accretion of dark matter onto a non-spining black hole of mass $M$. We assume that the dominant component of the dark matter in the halo is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f874b135735adbab5b2fdd0b0f5b3f96
http://arxiv.org/abs/2112.05160
http://arxiv.org/abs/2112.05160
Publikováno v:
Journal of Cosmology and Astroparticle Physics. 2022:036
A self-interacting dark matter halo can experience gravothermal collapse, resulting in a central core with an ultrahigh density. It can further contract and collapse into a black hole, a mechanism proposed to explain the origin of supermassive black
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3d1bd11bc9014d71ecefd0bf465ba1b
https://doi.org/10.1088/1475-7516/2022/05/036
https://doi.org/10.1088/1475-7516/2022/05/036
Publikováno v:
The Astrophysical Journal Letters. 914:L26
Observations show that supermassive black holes (SMBHs) with a mass of $\sim10^9 M_\odot$ exist when the Universe is just $6\%$ of its current age. We propose a scenario where a self-interacting dark matter halo experiences gravothermal instability a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::275eb63d6d55cda5dbdc71494434fb18
https://doi.org/10.3847/2041-8213/ac04b0
https://doi.org/10.3847/2041-8213/ac04b0
We give the Buchdahl stability bound in Eddington-inspired Born-Infeld (EiBI) gravity. We show that this bound depends on an energy condition controlled by the model parameter $\kappa$. From this bound, we can constrain $\kappa\lesssim 10^{8}\text{m}
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ffa02ff99b1e7345dc8dbe24f4cc84dd
Publikováno v:
The 21st Pacific Asia Conference on Language, Information and Computation : Proceedings. 21:508-514
PACLIC 21 / Seoul National University, Seoul, Korea / November 1-3, 2007
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::feb8e895c66d676b52301c1aaab36827
http://hdl.handle.net/2065/29105
http://hdl.handle.net/2065/29105
Autor:
Wei, Xiang Feng, Zhang, Quan
Publikováno v:
The 20th Pacific Asia Conference on Language, Information and Computation : Proceedings of the Conference. 20:250-256
PACLIC 20 / Wuhan, China / 1-3 November, 2006
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::57a8832ae0d5edc6c68e0178be71c3d5
http://hdl.handle.net/2065/29043
http://hdl.handle.net/2065/29043
Publikováno v:
The 20th Pacific Asia Conference on Language, Information and Computation : Proceedings of the Conference. 20:175-182
PACLIC 20 / Wuhan, China / 1-3 November, 2006
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::21b1fb7ab5b870feb1233cf6cf5c5de8
http://hdl.handle.net/2065/29068
http://hdl.handle.net/2065/29068