Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Umananda Dev Goswami"'
Autor:
Ronit Karmakar, Umananda Dev Goswami
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 9, Pp 1-13 (2024)
Abstract We derive novel black hole solutions in a modified gravity theory, namely the Hu–Sawicki model of f(R) gravity. After obtaining the black hole solution, we study the horizon radius of the black hole from the metric and then analyse the dep
Externí odkaz:
https://doaj.org/article/d07c083f6d6d4b30978221ae70d0ba38
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 4, Pp 1-22 (2024)
Abstract In this work, we study the effect of diffusion of ultra-high energy cosmic ray (UHECR) protons in the presence of turbulent magnetic fields (TMFs) in the light of the f(R) theory of gravity. The f(R) theory of gravity is a successful modifie
Externí odkaz:
https://doaj.org/article/0f200ee969254121aa7dccba5f73b334
Autor:
Nashiba Parbin, Umananda Dev Goswami
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 5, Pp 1-13 (2023)
Abstract We propose to test the viability of the recently introduced $$f(\mathcal {R})$$ f ( R ) gravity model in the galactic scales. For this purpose we consider test particles moving in stable circular orbits around the galactic center. We study t
Externí odkaz:
https://doaj.org/article/8a9419ae1e6a49368eda09cad822da19
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 12, Pp 1-21 (2020)
Abstract In this paper, we have introduced a new f(R) gravity model as an attempt to have a model with more parametric control, so that the model can be used to explain the existing problems as well as to explore new directions in physics of gravity,
Externí odkaz:
https://doaj.org/article/015e5389d6e6485d9aea6ee5e66e53ec
Autor:
Nashiba Parbin, Umananda Dev Goswami
Publikováno v:
European Physical Journal
We propose to test the viability of the recently introduced $f(\mathcal{R})$ gravity model in the galactic scales. For this purpose we consider test particles moving in stable circular orbits around the galactic center. We study the Palatini approach
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::015fd7d8b2b7b21fa69be58e44e5bb03
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Publikováno v:
INSPIRE-HEP
In this work we investigate a Schwarzschild-type black hole that is corrected by the Generalized Uncertainty Principle (GUP) and possesses topological defects within the framework of Bumblebee gravity. Our focus is on the thermodynamic characteristic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62e309ebbd56277218812bc972109871
http://arxiv.org/abs/2303.00297
http://arxiv.org/abs/2303.00297
Publikováno v:
Web of Science
We obtain the black hole solution for the Ay\'on - Beato - Garc\'ia (ABG) type black hole surrounded by a cloud of strings in Rastall gravity and calculate the scalar quasinormal modes of it for a massless scalar field. To have a better visualization
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::709cf3b2f172502710e99361a572bf84
https://doi.org/10.1142/s021988782350007x
https://doi.org/10.1142/s021988782350007x
Publikováno v:
Physical Review D. 106
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8dc23ea6b97d4ad13f7baf381bdb0f2f
https://doi.org/10.1103/physrevd.106.022009
https://doi.org/10.1103/physrevd.106.022009
Publikováno v:
Physics of the Dark Universe. 40:101209
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27cab81fc5bce251ee50592149d5e2c0
https://doi.org/10.1016/j.dark.2023.101209
https://doi.org/10.1016/j.dark.2023.101209