Open AccessEquation of state for quark matter with strong magnetic field and hybrid stars
Author(s) -
Tomoki Endo,
Hajime Sotani,
Toshitaka Tatsumi
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1468/1/012087
Subject(s) - physics , quark star , strange matter , stars , equation of state , landau quantization , magnetic field , star (game theory) , radius , state (computer science) , astrophysics , quantum electrodynamics , quantum mechanics , mathematics , computer security , algorithm , computer science
Our previous studies indicate that quark matter in the states of the lowest Landau level of a strong magnetic field must be described by a stiffer equation of state and a mass for the hybrid star that easily rises above 2 M ⊙. In contrast, the inclusion of higher Landau levels may permit a softer equation of state. Because this general scenario seems to be complex, as a first step, we look into introducing only the second Landau level to elicit trends. We find that to sustain a heavy star of mass 2 M ⊙, the equation of state must remain sufficiently stiff. We also discuss the mass-radius relation for these hybrid stars in the light of recent observations.