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Equation of State of Strongly Magnetized Matter with Hyperons and Δ-Resonances

Vivek Baruah Thapa, +3 more
- Vol. 3, Iss: 4, pp 660-675
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TLDR
In this article, a new equation of state for the baryonic matter under an intense magnetic field was constructed within the framework of covariant density functional theory, where the composition of matter includes hyperons as well as Δ-resonances.
Abstract
We construct a new equation of state for the baryonic matter under an intense magnetic field within the framework of covariant density functional theory. The composition of matter includes hyperons as well as Δ-resonances. The extension of the nucleonic functional to the hypernuclear sector is constrained by the experimental data on Λ and Ξ-hypernuclei. We find that the equation of state stiffens with the inclusion of the magnetic field, which increases the maximum mass of neutron star compared to the non-magnetic case. In addition, the strangeness fraction in the matter is enhanced. Several observables, like the Dirac effective mass, particle abundances, etc. show typical oscillatory behavior as a function of the magnetic field and/or density which is traced back to the occupation pattern of Landau levels.

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Citations
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Massive Δ -resonance admixed hypernuclear stars with antikaon condensations

TL;DR: In this paper, the effect of (anti)kaon condensation on the properties of compact stars that develop hypernuclear cores with and without an admixture of $\mathrm{\ensuremath{\Delta}}$-resonances was studied.
Journal ArticleDOI

Dense matter equation of state of a massive neutron star with antikaon condensation

TL;DR: In this paper, the authors investigate the (anti)kaon condensation in the inner core of a neutron star and find that the equation of state softens with the inclusion of (anti-)kaon-nucleon condensates, which lowers the maximum mass of the star.
Journal ArticleDOI

Delta baryons in neutron-star matter under strong magnetic fields

TL;DR: In this paper, the authors studied magnetic field effects on neutron star matter containing the baryon octet and additional spin 3/2 baryons (the $$\varDelta $$¯¯ ’s).
Journal ArticleDOI

Effects of anisotropy on strongly magnetized neutron and strange quark stars in general relativity

TL;DR: In this paper, the authors investigate the properties of anisotropic, spherically symmetric compact stars, especially neutron stars and strange quark stars, made of strongly magnetized matter.
Journal ArticleDOI

Equation of state and composition of proto-neutron stars and merger remnants with hyperons

TL;DR: In this paper, the authors considered both the neutrino free-streaming and the trapped regimes which are separated by a temperature of a few MeV and showed that the softening of the EoS with the introduction of the hyperons is quantified under various conditions of lepton fractions and temperatures.
References
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Journal ArticleDOI

Discovery of a pulsar in a binary system

TL;DR: In this paper, a pulsar with a pulsation period that varies systematically between 0.058967 and 0.59045 sec over a cycle of 0.3230 d was detected.
Journal ArticleDOI

GW190814: Gravitational Waves from the Coalescence of a 23 M$_\odot$ Black Hole with a 2.6 M$_\odot$ Compact Object

R. Abbott, +1254 more
TL;DR: In this article, the authors reported the observation of a compact binary coalescence involving a 22.2 -24.3 magnitude black hole and a compact object with a mass of 2.50 -2.67 magnitude.
Journal ArticleDOI

Recent Progress and New Challenges in Isospin Physics with Heavy-Ion Reactions

TL;DR: In this paper, the authors review the major progress achieved during the last decade in isospin physics with heavy ion reactions and discuss future challenges to the most important issues in this field.
Journal ArticleDOI

GW190814: Gravitational Waves from the Coalescence of a 23 Solar Mass Black Hole with a 2.6 Solar Mass Compact Object

Richard J. Abbott, +1337 more
TL;DR: In this paper, the authors reported the observation of a compact binary coalescence involving a 222 −243 M ⊙ black hole and a compact object with a mass of 250 −267 M ⋆ (all measurements quoted at the 90% credible level) The gravitational-wave signal, GW190814, was observed during LIGO's and Virgo's third observing run on 2019 August 14 at 21:10:39 UTC and has a signal-to-noise ratio of 25 in the three-detector network.
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