2002/05/30 by Takashi Nakamura, Nakamura, Takashi
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #Gamma-ray bursts and supernovae #Pulsars and Gravitational Waves Research #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0205526
5 pages Submitted to ApJL
arxiv created 2002/05/30 · openalex publication_date 2002/05/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
If there exists the quark star of maximum mass ∼ 0.7\sol as suggested by recent Chandra observations, we show that the general relativistic collapse of a neutron star of mass greater than the maximum mass of the neutron star with angular momentum parameter q≡ cJ/GM2 > 1 may lead to such a strange star. Here J and M are the angular momentum and the gravitational mass of the neutron star, respectively. Under the cosmic censorship hypothesis, such a star can not be a black hole directly. The jet formed in the soft core might explode the outer envelope and leave the quark star of mass ∼ 0.7\sol. The remnant quark star has \lesssim 1053 erg rotational energy so that the formation of the quark star may be related to the central engine of GRBs. The detailed numerical simulations are urgent to confirm or refute this scenario.