Atsnaita Yasrina, Nuriwati Widianingrum, Norma Sidik Risdianto, Doni Andra, Nugroho Adi Pramono, Amiya Fajrin
Neutron stars are relativistic objects because they have strong gravity that can carry out the accretion process. The assumption of this research is accretion material in the equatorial plane. This assumption affects the metrics used. The metric with these assumptions formulates the basis vector, velocity vector-4, angular velocity, Killing vector, and Lorentz gamma factor. The general relativistic conservation equation for mass requires all these quantities. The mass accretion rate of the slowly rotating neutron star is covariant with the Kerr black hole. Accretion material distance and accretion flow radial rate affect accretion mass rate. The mass accretion rate of the neutron star slowly rotating as a function of radial, while the rapidly rotating is a function of radial and polar. © 2023 American Institute of Physics Inc.. All rights reserved.
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Lowokwaru, Malang, 65145, Indonesia; Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung, 40132, Indonesia; Institute for Theoretical Physics, Kanazawa University, Kanazawa, 920-1192, Japan; Department of Physics Education, Universitas Islam Negeri Sunan Kalijaga, Jl. Marsda Adisucipto, Yogyakarta, 55280, Indonesia; Department of Physics Education, FKIP, Universitas Lampung, Jl. Prof. Soemantri Brodjonegoro No.1 Gedong Meneng Rajabasa, Bandar Lampung, Indonesia
