Zobrazeno 1 - 10
of 146
pro vyhledávání: '"Gao, Sijie"'
In an attempt to understand the Penrose inequality for black holes with angular momentum, an axisymmetric, vacuum, asymptotically Euclidean initial data set subject to certain quasi stationary conditions is considered for a case study. A new geometri
Externí odkaz:
http://arxiv.org/abs/2312.10590
Autor:
Xia, Minghao, Gao, Sijie
Tolman proposed that the proper temper $T$ of a static self-gravitating fluid in thermodynamic equilibrium satisfies the relation $\chi T=constant$, where $\chi$ is the redshift factor of the spacetime. The Tolman law has been proven for radiation in
Externí odkaz:
http://arxiv.org/abs/2305.17307
Publikováno v:
Phys. Scripta 99 (2024) 9, 095022
It is well-known that the mass of a non-asymptotically flat spacetime cannot be uniquely defined. Some mass formulas for the Kerr-AdS black hole have been found and used in studying black hole thermodynamics. However, the derivations usually need a b
Externí odkaz:
http://arxiv.org/abs/2304.10290
Autor:
Gao, Yunjiao, Gao, Sijie
We test the weak cosmic censorship conjecture for magnetized Kerr-Newman spacetime via the method of injecting a test particle. Hence, we need to know how the black hole's parameters change when a test particle enters the horizon. This was an unresol
Externí odkaz:
http://arxiv.org/abs/2208.00703
Publikováno v:
Zhongguo quanke yixue, Vol 27, Iss 12, Pp 1468-1474 (2024)
Background Chronic obstructive pulmonary disease (COPD) is a heterogeneous disease. Asthma-COPD overlap (ACO) has clinical features both related to asthma and COPD. Some patients are unable to cooperate with pulmonary function tests, so it is difficu
Externí odkaz:
https://doaj.org/article/dee41f97cd704d08ad4b51da50afc099
Autor:
Huang, Yaqi, Wang, Yetong, Deng, Jia, Gao, Sijie, Qiu, Jiakang, He, Jiawei, Yang, Tong, Tan, Nianhua, Cheng, Shaowu, Song, Zhenyan
Publikováno v:
In Heliyon 15 August 2024 10(15)
It has been argued that ultracompact objects, which possess light rings but no horizons, may be unstable against gravitational perturbations. To test this conjecture, we revisit the quasi-black hole solutions, a family of horizonless spacetimes whose
Externí odkaz:
http://arxiv.org/abs/2108.08967
Universality of entropy principle for a general diffeomorphism-covariant purely gravitational theory
Publikováno v:
Chinese Physics C Vol. 45, No. 10 (2021) 103103
Thermodynamics plays an important role in gravitational theories. It is a principle independent of the gravitational dynamics, and there is still no rigorous proof to show that it is consistent with the dynamical principle. We consider a self-gravita
Externí odkaz:
http://arxiv.org/abs/2106.14425
Autor:
Guo, Minyong, Gao, Sijie
Publikováno v:
Phys. Rev. D 103, 104031 (2021)
Light rings (LRs) play an important role in gravitational wave observations and black hole photographs. In this paper, we investigate general features of LRs in stationary, axisymmetric, asymptotically flat spacetimes with or without horizons. For a
Externí odkaz:
http://arxiv.org/abs/2011.02211
Autor:
Liu, Chengcheng, Gao, Sijie
Publikováno v:
Phys. Rev. D 101, 124067 (2020)
Evidences have been found that the weak cosmic censorship conjecture could be violated if test particles with charge and angular momentum are injected into a black hole. However, second-order corrections and fine-tunings on the particle's parameters
Externí odkaz:
http://arxiv.org/abs/2003.12999