EQUILIBRIUM CONFIGURATIONS FOR QUARK–DIQUARK STARS AND THE PROBLEM OF HER X-1 MASS
1998 ◽
Vol 07
(01)
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pp. 19-27
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Keyword(s):
X Ray
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We report new calculations of the physical properties of a quark–diquark plasma. A vacuum contribution is taken into account and is responsible for the appearance of a stable state at zero pressure and at a baryon density of about 2.2 times the nuclear matter density in this model. The resulting equation of state was used to integrate numerically the Tolman–Oppenheimer–Volkoff equations. The mass-radius relationship has been derived from a series of equilibrium configurations constituted by a mixture of quarks and diquarks. These stellar models, which are representative of a whole class, may be helpful to understand the possible compactness of the X-ray source Her X-1 and related objects.
Keyword(s):
2007 ◽
Vol 34
(5)
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pp. R243-R283
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2018 ◽
Vol 2018
(5)
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Keyword(s):
Keyword(s):