Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Rong-Jia Yang"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 5, Pp 1-7 (2024)
Abstract Considering accretion onto a charged dilaton black hole, the fundamental equations governing accretion, general analytic expressions for critical points, critical velocity, critical speed of sound, and ultimately the mass accretion rate are
Externí odkaz:
https://doaj.org/article/9ccef04d68984ff191d0f3264e38d5ea
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 5, Pp 1-22 (2024)
Abstract With the method of the background field expansion, we investigate the one-loop quantization of the Euclidean nonlocal f (R) model in the de-Sitter universe. We obtain the ghost-free condition (GFC) based on the transformation from the Jordan
Externí odkaz:
https://doaj.org/article/482e7431eb5a45649ddac16a344b4021
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 11, Pp 1-9 (2023)
Abstract The adiabatic accretion onto the charged black hole surrounded by perfect fluid radiation field (PFRF) in Rastall gravity is addressed in this manuscript. For this purpose, mass accretion rate $$\dot{M}$$ M ˙ , critical horizon radius and s
Externí odkaz:
https://doaj.org/article/68ee622e24914f58b53b2cc53fcb8ff5
Publikováno v:
Universe, Vol 10, Iss 3, p 133 (2024)
We consider geodesic motions in Kerr–Sen–AdS4 spacetime. We obtain equations of motion for light rays and test particles. Using parametric diagrams, we show some regions where radial and latitudinal geodesic motions are allowed. We analyze the im
Externí odkaz:
https://doaj.org/article/ec96c9f4413c434297e663a39d370fa3
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 11, Pp 1-7 (2022)
Abstract We consider the accretion process in the thin disk around a supermassive black hole in Einstein-aether-scalar theory. We probe the effects of the model parameter on the physical properties of the disk. The results show that with increasing v
Externí odkaz:
https://doaj.org/article/dd986cefdfb641189de7b215c5483fb9
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 6, Pp 1-6 (2022)
Abstract We present an analytic solution for accretion of a gaseous medium with adiabatic equation of state onto a charged dilaton black hole which moves at a constant velocity. We determine the four-velocity of accreted flow and find that it possess
Externí odkaz:
https://doaj.org/article/428c2c80a4a241bdac410d34daec50b1
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 1, p 14 (2023)
Hierarchical triple-star systems consists of three components organized into an inner binary ( M _1 , M _2 ) and a more distant outer tertiary ( M _3 ) star. The LAMOST Medium-Resolution Spectroscopic Survey has offered a great sample for the study o
Externí odkaz:
https://doaj.org/article/956750e455d44056a96b7e63fa1c2511
Autor:
Chenrui Zhu, Rong-Jia Yang
Publikováno v:
Entropy, Vol 22, Iss 11, p 1246 (2020)
We consider whether the new horizon-first law works in higher-dimensional f(R) theory. We firstly obtain the general formulas to calculate the entropy and the energy of a general spherically-symmetric black hole in D-dimensional f(R) theory. For appl
Externí odkaz:
https://doaj.org/article/901957b2d991420c9a25ef8fd7765c86
Autor:
Yaoguang Zheng, Rong-Jia Yang
Publikováno v:
Universe, Vol 6, Iss 3, p 47 (2020)
We consider the new horizon first law in f ( R ) theory. We derive the general formulas to computed the entropy and energy for static spherically symmetric black hole. For applications, some nontrivial solutions in some popular f ( R ) theories are i
Externí odkaz:
https://doaj.org/article/b24439503a7d44718c1337abf47d513d
We study the adiabatic accretion process of ordinary baryonic gas onto spherically symmetric black holes in Einstein-Maxwell-scalar theory, with two parameters $\alpha$ and $\beta$ in the coupling term. Especially, we demonstrate the range of the tra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7470ee2c226836d8cf11835ac709f97e
http://arxiv.org/abs/2203.02924
http://arxiv.org/abs/2203.02924
