Apparent horizons in cosmologically-embedded black holes
Fuente:
arXiv
Salvato in:
| Autori principali: | , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2024
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866917802063953920 |
|---|---|
| author | Cadoni, Mariano Pitzalis, Mirko Sanna, Andrea Pierfrancesco |
| author_facet | Cadoni, Mariano Pitzalis, Mirko Sanna, Andrea Pierfrancesco |
| contents | We present exact solutions for the cosmological embedding of a broad class of non-singular black holes, demonstrating that these objects exhibit an apparent horizon. The evolution of the latter is analyzed as a function of the cosmological redshift $z$. We show that its size exceeds that of the event horizon of an isolated black hole and increases monotonically with increasing $z$. Explicit formulas and numerical results are provided for the specific cases of the Hayward and Fan $\&$ Wang non-singular black-hole models. Furthermore, we explore the distinct dynamical roles of the event and apparent horizons, highlighting connection between the latter and the recently identified cosmological mass shift in non-singular black holes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_10459 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Apparent horizons in cosmologically-embedded black holes Cadoni, Mariano Pitzalis, Mirko Sanna, Andrea Pierfrancesco General Relativity and Quantum Cosmology We present exact solutions for the cosmological embedding of a broad class of non-singular black holes, demonstrating that these objects exhibit an apparent horizon. The evolution of the latter is analyzed as a function of the cosmological redshift $z$. We show that its size exceeds that of the event horizon of an isolated black hole and increases monotonically with increasing $z$. Explicit formulas and numerical results are provided for the specific cases of the Hayward and Fan $\&$ Wang non-singular black-hole models. Furthermore, we explore the distinct dynamical roles of the event and apparent horizons, highlighting connection between the latter and the recently identified cosmological mass shift in non-singular black holes. |
| title | Apparent horizons in cosmologically-embedded black holes |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2410.10459 |