2002/09/02 by C.‐Y. Ng, C. Y. Ng, K. S. Cheng +1
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics #Baryon #Gamma-ray bursts and supernovae #Luminosity #Neutron star #Nuclear physics #Particle physics #Physics #Pion #Pulsars and Gravitational Waves Research #Quark #Quark star #Stars #Strange matter #Strange quark #astro-ph
paper · pdf · doi:10.1016/s0927-6505(02)00197-4
published as Astropart.Phys.19:171-192,2003 · 23 pages, 14 figures, accepted by Astroparticle Physics, abstract appeared here has been shortened
arxiv created 2002/09/02 · openalex publication_date 2003/03/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
As the chiral symmetry is widely recognized as an important driver of the strong interaction dynamics, current strange stars models based on MIT bag models do not obey such symmetry. We investigate properties of bare strange stars using the Cloudy Bag Model, in which a pion cloud coupled to the quark-confining bag is introduced such that chiral symmetry is conserved. We find that in this model the decay of pions is a very efficient cooling way. In fact it can carry out most the thermal energy in a few milliseconds and directly convert them into 100MeV photons via pion decay. This may be a very efficient γ-ray burst mechanism. Furthermore, the cooling behavior may provide a possible way to distinguish a compact object between a neutron star, MIT strange star and Cloudy Bag strange star in observations.