Is the remnant of GW190425 a strange quark star?

Autor:	Sedaghat, J., Zebarjad, S. M., Bordbar, G. H., Panah, B. Eslam, Moradi, R.
Rok vydání:	2021
Předmět:	General Relativity and Quantum Cosmology Astrophysics - High Energy Astrophysical Phenomena High Energy Physics - Phenomenology High Energy Physics - Theory
Zdroj:	Phys. Lett. B 833 (2022) 137388
Druh dokumentu:	Working Paper
DOI:	10.1016/j.physletb.2022.137388
Popis:	This study investigates the effects of different QCD models on the structure of strange quark stars (SQS). In these models, the running coupling constant has a finite value in the infrared region of energy. By imposing some constraints on the strange quark matter (SQM) and exploiting the analytic and background perturbation theories, the equations of states for the SQM are obtained. Then, the properties of SQSs in general relativity are evaluated. By using component masses of GW190425 \cite{Abbott2020ApJL} as well as some conversion relations between the baryonic mass and the gravitational mass, the remnant mass of GW190425 is obtained. Our results for the maximum gravitational mass of SQS are then compared with the remnant mass of GW190425. The results indicate that the obtained maximum gravitational masses are comparable to the remnant mass of GW190425. Therefore, it is proposed that the remnant mass of GW190425 might be a SQS. Comment: 12 pages, 7 figures, 5 tables
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2104.00544 Zobrazit plný text záznamu View this record from Arxiv