Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Guangzhou Guo"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 11, Pp 1-20 (2024)
Abstract This study investigates scalar clouds around Kerr-Newman black holes within the Einstein-Maxwell-scalar model. Tachyonic instabilities are identified as the driving mechanism for scalar cloud formation. Employing the spectral method, we nume
Externí odkaz:
https://doaj.org/article/0bb1312f8a704c14aa118b4a5645db53
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-20 (2023)
Abstract In this paper, we construct scalarized rotating black holes within the framework of Einstein-Maxwell-scalar models. These models incorporate non-minimal couplings that can induce tachyonic instabilities, leading to the spontaneous scalarizat
Externí odkaz:
https://doaj.org/article/0b529fac6bc74ab6b0b27c31aeddfba6
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 7, Pp 1-22 (2023)
Abstract We study time evolutions of charged scalar perturbations on the background of a charged hairy black hole, in which the perturbations can be governed by a double-peak effective potential. By extracting quasinormal modes from the waveform of s
Externí odkaz:
https://doaj.org/article/54866375dc0141b7a10923ffbde3817d
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 6, Pp 1-20 (2022)
Abstract We study the waveforms of time signals produced by scalar perturbations in static hairy black holes, in which the perturbations can be governed by a double-peak effective potential. The inner potential peak would give rise to echoes, which p
Externí odkaz:
https://doaj.org/article/94799efd93c0416e8dfcd5dc9ca8cfb3
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 6, Pp 1-24 (2022)
Abstract For a static and spherically symmetric black hole, a photon sphere is composed of circular null geodesics of fixed radius, and plays an important role in observing the black hole. Recently, in an Einstein-Maxwell-scalar model with a non-mini
Externí odkaz:
https://doaj.org/article/7158b4291f0540c98f355601340c6dea
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 10, Pp 1-14 (2021)
Abstract In this paper, we study spontaneous scalarization of asymptotically anti-de Sitter charged black holes in an Einstein–Maxwell-scalar model with a non-minimal coupling between the scalar and Maxwell fields. In this model, Reissner–Nordstr
Externí odkaz:
https://doaj.org/article/13d42199c1b141408ed06cad16346d42
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 10, Pp 1-14 (2021)
European Physical Journal
European Physical Journal
In this paper, we study spontaneous scalarization of asymptotically anti-de Sitter charged black holes in an Einstein–Maxwell-scalar model with a non-minimal coupling between the scalar and Maxwell fields. In this model, Reissner–Nordström-AdS (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f724f455fe179360f072c8305bcf184
https://doaj.org/article/13d42199c1b141408ed06cad16346d42
https://doaj.org/article/13d42199c1b141408ed06cad16346d42
Publikováno v:
Biochemical Genetics. 60:39-53
Diabetes mellitus (DM), a familiar disease, is characterized by high blood glucose levels owing to insulin deficiency. Researches have suggested that the incidence rate of diabetes is increasing and it has become an important global epidemic. The typ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98e3cf140866bc5010edfd38ce52d64b
https://doi.org/10.1007/s10528-021-10083-6
https://doi.org/10.1007/s10528-021-10083-6
We study gravitational lensing of light by hairy black holes, which, in a certain parameter regime, can possess two photon spheres of different size outside the event horizon. In particular, we focus on higher-order images of a point-like light sourc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6c2970b3468e20bd1fa3a5c0a8f1824
http://arxiv.org/abs/2204.13948
http://arxiv.org/abs/2204.13948
Photon spheres play a pivotal role in the imaging of luminous objects near black holes. In this paper, we examine observational appearances of a star freely falling in hairy black holes, which can possess one or two photon spheres outside the event h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b0b070d1dd3b665cd8e1cf479a05d05