Properties of hybrid stars with a density-dependent bag model
نویسندگان
چکیده
The phenomena of deconfinement hadronic matter into quark at high density, relevant to hybrid star (HS) cores, is studied in the present work. effective chiral model describes pure phase while for MIT bag chosen with density dependent pressure. Phase transition achieved using Maxwell construction. effect variation asymptotic value pressure ($B_{as}$) analyzed w.r.t mass and radius HSs. presence hyperons sector also has significant on choice $B_{as}$. Both composition $B_{as}$ significantly affect stability star. gross structural properties resultant HS are calculated static condition compared various constraints them from different observational empirical perspectives. like maximum gravitational HS, obtained $B_{as}$=80 MeV fm$^{-3}$, consistent limits imposed analysis PSR J0348+0432 J0740+6620. estimates $R_{1.4}$ $R_{1.6}$ HSs found be within range prescribed GW170817 analysis. Also $M-R$ solutions excellent agreement recently NICER data J0030+0451. results surface redshift, equation state, satisfy 1E 1207.4-5209 RX J0720.4-3125. work extended obtain tidal deformation $\Lambda_{1.4}$ bound
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ژورنال
عنوان ژورنال: Journal of Physics G
سال: 2021
ISSN: ['1361-6471', '0954-3899']
DOI: https://doi.org/10.1088/1361-6471/ac1713