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| Sgr A* Shadow Study with KTN Space Time and Investigation of NUT Charge Existence | |
| Masoumeh, Ghasemi-Nodehi | |
| 2024-09-01 | |
| Source Publication | UNIVERSE
 |
| Volume | 10Issue:9Pages:378 |
| Contribution Rank | 1 |
| Abstract | In this paper, I investigate the existence of the NUT charge through the KTN spacetime using shadow observations of Sgr A*. I report that the range of my constraint for the NUT charge is between -0.5 and 0.5 for Schwarzschild-like and very slowly rotating KTN black holes. This range extends to 1.5 for spins up to -2 and -1.5 for spins up to 2 based on Keck observations for both 40 degrees and 10 degrees viewing angles. For VLTI observations, Schwarzschild-like and very slowly rotating KTN black holes are excluded for a 40 degrees viewing angle, and the NUT charge is constrained to a very narrow range for a 10 degrees viewing angle. I report that the possibility of having KTN naked singularities in Sgr A* is small, considering the uncertainties in the shadow size. |
| Keyword | general relativity black hole shadow test of Kerr paradigm |
| DOI | 10.3390/universe10090378 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | CAS Talent Program ; CAS Telent Program ; Xinjiang Tianchi Telent Program |
| WOS Research Area | Astronomy & Astrophysics ; Physics |
| WOS Subject | Astronomy & Astrophysics ; Physics, Particles & Fields |
| WOS ID | WOS:001323818000001 |
| Publisher | MDPI |
| Funding Organization | CAS Talent Program ; CAS Telent Program ; Xinjiang Tianchi Telent Program |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/7016 |
| Collection | 射电天文研究室_星系宇宙学研究团组 |
| Corresponding Author | Masoumeh, Ghasemi-Nodehi |
| Affiliation | Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Masoumeh, Ghasemi-Nodehi. Sgr A* Shadow Study with KTN Space Time and Investigation of NUT Charge Existence[J]. UNIVERSE,2024,10(9):378. |
| APA | Masoumeh, Ghasemi-Nodehi.(2024).Sgr A* Shadow Study with KTN Space Time and Investigation of NUT Charge Existence.UNIVERSE,10(9),378. |
| MLA | Masoumeh, Ghasemi-Nodehi."Sgr A* Shadow Study with KTN Space Time and Investigation of NUT Charge Existence".UNIVERSE 10.9(2024):378. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Masoumeh-2024-Sgr A_（1492KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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