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We consider a thin ($\sim 10^2-10^3$ fm) layer of electrons (the electrosphere) at the quark surface of a bare strange star, taking into account the surface effects at the boundary with the vacuum. The quark surface holds the electron layer…

Astrophysics · Physics 2009-11-10 V. V. Usov , T. Harko , K. S. Cheng

We made a detailed study of the properties of the electron layer near the quark surface of strange stars with strong ($\sim 10^{14}-10^{17}$G) magnetic fields. The electrostatic potential and the electric field at the quark surface were…

Astrophysics · Physics 2007-05-23 Zheng Xiaoping , Yu Yunwei

We study the layer of electrons on bare strange star surfaces, taking the Dirac exchange-energy into account. Because electrons are fermions, the electron wave function must be of exchange-antisymmetry. The Dirac exchange-energy originates,…

Astrophysics · Physics 2007-12-18 Hai-Chuan Guo , Ren-Xin Xu , Cheng-Min Zhang

Strange stars are one of the hypothetical compact stellar objects that can be formed after a supernova explosion. The existence of these objects relies on the absolute stability of strange {\it collapsed} quark matter with respect to…

High Energy Astrophysical Phenomena · Physics 2014-11-26 Massimo Mannarelli

We reexamine the surface composition of strange stars. Strange quark stars are hypothetical compact stars which could exist if strange quark matter was absolutely stable. It is widely accepted that they are characterized by an enormous…

Nuclear Theory · Physics 2007-05-23 Prashanth Jaikumar , Sanjay Reddy , Andrew W. Steiner

The crystalline color superconducting phase is believed to be the ground state of deconfined quark matter for sufficiently large values of the strange quark mass. This phase has the remarkable property of being more rigid than any known…

High Energy Physics - Phenomenology · Physics 2014-06-11 Massimo Mannarelli , Giulia Pagliaroli , Alessandro Parisi , Luigi Pilo

The possible existence of compact stars made of absolutely stable strange quark matter--referred to as strange stars--was pointed out by E. Witten almost a quarter of a century ago. One of the most amazing features of such objects concerns…

Solar and Stellar Astrophysics · Physics 2009-10-29 Rodrigo P. Negreiros , Fridolin Weber , Manuel Malheiro , Vladimir Usov

We investigate the impact of magnetic fields on the electron distribution in the electrosphere of quark stars. For moderately strong magnetic fields $B\sim 10^{13}$G, quantization effects are generally weak due to the large number density…

High Energy Physics - Phenomenology · Physics 2008-11-26 Prashanth Jaikumar

The surface electric characteristics of bare strange stars are investigated with the inclusion of boundary effects. The thickness of the electron layer where pairs can be spontaneously created is calculated as a function of the bag…

Astrophysics · Physics 2009-11-07 Jian Hu , R. X. Xu

It is shown that extremely strong electric fields may be generated at the surface of strange quark matter in the color-flavor locked phase because of the surface effects. Some properties of strange stars made of this matter are briefly…

Astrophysics · Physics 2009-11-10 V. V. Usov

Recent achievements of bare strange stars are briefly reviewed. A nascent protostrange star should be bare because of strong mass ejection and high temperature after the supernova detonation flame, and a crust can also hardly form except…

Astrophysics · Physics 2016-01-27 R. X. Xu

We consider the spectrum, emissivity and flux of the electromagnetic radiation emitted by the thin electron layer (the electrosphere) at the surface of a bare strange star. In particular, we carefully consider the effect of the multiple and…

Astrophysics · Physics 2009-11-10 T. Harko , K. S. Cheng

Using the Thomas-Fermi model, we investigated the electric characteristics of a static non-magnetized strange star without crust in this paper. The exact solutions of electron number density and electric field above the quark surface are…

Astrophysics · Physics 2015-06-24 R. X. Xu , G. J. Qiao

Strange quark matter could be found in the core of neutron stars or forming strange quark stars. As is well known, these astrophysical objects are endowed with strong magnetic fields which affect the microscopic properties of matter and…

Astrophysics · Physics 2008-12-18 R. Gonzalez Felipe , A. Perez Martinez , H. Perez Rojas , M. Orsaria

Strange quark matter with the density of ~ 5\times 10^{14} g cm^{-3} might exist up to the surface of a strange star. This differs qualitatively from the case of a neutron star and opens observational possibilities to distinguish strange…

Astrophysics · Physics 2007-05-23 Vladimir V. Usov

The distribution of electrons and of electrical at the free surface if strange quark matter are determined within the framework of the MIT bag model. It is shown that, with the allowance for the betta-decay of quarks near the surface due to…

Astrophysics · Physics 2014-10-13 G. S. Hajyan

We investigate the dynamical behavior of strange quark matter (SQM) objects, such as stars and planets, when subjected to radial oscillations induced by tidal interactions in stellar systems. Our study demonstrates that SQM objects can…

High Energy Astrophysical Phenomena · Physics 2025-07-16 Joanna Jałocha , Łukasz Bratek

It is suggested in this paper that the `bare' strange star might be not bare, and there could be a magnetosphere around it. As a strange star might be an intensely magnetized rotator, the induced unipolar electric field would be large…

Astrophysics · Physics 2016-08-30 Ren Xin Xu , Guo Jun Qiao

In this paper we study radial oscillations of rotating strange stars in strong magnetic fields in the Density Dependent Quark Mass (DDQM) model. We see that increase of frequency i.e. difference in frequency of rotating and non-rotating…

Astrophysics · Physics 2007-05-23 S. Singh , N. Chandrika Devi , V. K. Gupta , Asha Gupta , J. D. Anand

We show that the Coulomb barrier at the quark surface of a hot strange star may be a powerful source of $e^+e^-$ pairs which are created in an extremely strong electric field of the barrier and flow away from the star. The luminosity in the…

Astrophysics · Physics 2016-08-30 V. V. Usov
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