Influence of plasma on the optical appearance of spinning black hole in Kalb-Ramond gravity and its Existence around M87* and Sgr A*
| Autor: | Raza, Muhammad Ali, Zubair, M., Maqsood, Eiman |
|---|---|
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Journal of Cosmology and Astroparticle Physics, JCAP05(2024)047 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1475-7516/2024/05/047 |
| Popis: | The visible universe is filled with different types of plasma media in the form of stars, nebulas and other forms of excited gases. These matter fields have a high influence on the gravity and are likely to be present around the black holes due to the immense gravitational attraction. Since a plasma medium affects the speed of light, therefore we investigated the null geodesics and various optical features around the rotating black hole in Kalb-Ramond gravity immersed in plasma medium. Various plasma distributions are considered to develop a comparative study for their influence on unstable null circular orbits, shadows and evaporation rate of the black hole in the presence of a plasma medium. Moreover, the shadow results are also compared with Event Horizon Telescope data for M78* and Sgr A* in order to estimate the parametric bounds for which the rotating black hole in Kalb-Ramond gravity is considered either M87* or Sgr A* under the different values of plasma parameters. From this analysis, we also found the distribution of plasma that has a significant impact on the above mentioned features and is most likely to be present around M87* and Sgr A*. Comment: 30 pages, 14 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|