Ricci bi-conformal vector fields on Schwarzschild and Vaidya spacetimes | ||
| AUT Journal of Mathematics and Computing | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از 30 دی 1404 | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22060/ajmc.2025.23906.1328 | ||
| نویسندگان | ||
| Ghodratallah Fasihi Ramandi* 1؛ Mosayeb Zohrehvand2؛ Shahroud Azami1 | ||
| 1Department of Pure Mathematics, Faculty of Science, Imam Khomeini International University, Qazvin, Iran | ||
| 2Department of Mathematics, Faculty of Mathematical Sciences and Statistics, Malayer University, Malayer, Iran | ||
| چکیده | ||
| Vaidya spacetime describes the dynamical collapse of a null fluid under gravity and this spacetime model is capable to cover key characteristics of a astrophysical events such as gravitational wave emission and black hole generation. In this paper, we study existence of a geometric vector field named Ricci bi-conformal vector field in such spacetimes. We completely classify these geometric vector fields on Vaidya and Schwarzschid spacetimes. We show such vector fields are not gradient. | ||
| کلیدواژهها | ||
| Spacetime؛ Ricci bi-conformal vector field؛ Schwarzschild metric | ||
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