Open AccessChromothermal oscillations and collapse of strange stars to black holes: astrophysical implications
Author(s) -
Bagchi Manjari,
Ouyed Rachid,
Staff Jan,
Ray Subharthi,
Dey Mira,
Dey Jishnu
Publication year - 2008
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2008.12958.x
Subject(s) - physics , quark star , astrophysics , stars , gravitational collapse , instability , supernova , radius , equation of state , strange quark , luminosity , black hole (networking) , baryon , strange matter , mass distribution , astronomy , quark , particle physics , computer network , routing protocol , routing (electronic design automation) , computer security , quantum mechanics , galaxy , mechanics , computer science , link state routing protocol
We study the effects of temperature on strange stars. It is found that the maximum mass of the star decreases with the increase of temperature, as at high temperatures the equations of state become softer. Moreover, if the temperature of a strange star increases, keeping its baryon number fixed, its gravitational mass increases and its radius decreases. This leads to a limiting temperature, where it turns into a black hole. These features are the result of a combined effect of the change of gluon mass and the quark distribution with temperature. We report on a new type of radial oscillation of strange stars, driven by what we call ‘chromothermal’ instability. We also discuss the relevance of our findings in the astrophysics of core collapse supernovae and gamma‐ray bursts.