Results 41 to 50 of about 41,644 (263)

ANALYTICAL MODELS FOR QUARK STARS [PDF]

International Journal of Modern Physics D, 2007
We find two new classes of exact solutions to the Einstein–Maxwell system of equations. The matter content satisfies a linear equation of state consistent with quark matter; a particular form of one of the gravitational potentials is specified to generate solutions.
Komathiraj, K., Maharaj, S.D.
openaire   +3 more sources

The Hadron-quark Crossover in Neutron Star within Gaussian Process Regression Method

The Astrophysical Journal, 2022
The equations of state of the neutron star at the hadron-quark crossover region are interpolated with the Gaussian process regression (GPR) method, which can reduce the randomness of present interpolation schemes.
Kaixuan Huang, Jinniu Hu, Ying Zhang, Hong Shen   +3 more
doaj   +1 more source

QUARK-CLUSTER STARS: THE STRUCTURE [PDF]

International Journal of Modern Physics: Conference Series, 2013
The nature of pulsar-like compact stars is still in controversy although the first pulsar was found more than 40 years ago. Generally speaking, conventional neutron stars and non-mainstream quark stars are two types of models to describe the inner structure of pulsars, with the former composed mainly of hadrons and the latter of a peculiar kind of ...
Renxin Xu, Xiaoyu Lai
openaire   +3 more sources

Quark phases in neutron stars and a "third family" of compact stars as a signature for phase transitions [PDF]

, 2000
The appearance of quark phases in the dense interior of neutron stars provides one possibility to soften the equation of state (EOS) of neutron star matter at high densities.
Akmal, Balberg, Bardeen, Baym, Baym, Baym, Blaizot, Bodmer, Bombaci, Bowers, Brown, C. Greiner, Chapline, Chodos, Chodos, Dey, Ellis, Farhi, Feynman, Freedman, Fujii, Gerlach, Gerlach, Ghosh, Glendenning, Glendenning, Glendenning, Glendenning, Glendenning, Glendenning, Glendenning, Glendenning, Golden, Gorenstein, Greiner, Greiner, Haberl, Harrison, Heiselberg, J. Schaffner-Bielich, K. Schertler, Kaplan, Kapusta, Keister, Kettner, Klimov, Kämpfer, Li, Li, Li, Lindblom, M.H. Thoma, Madsen, Madsen, Miller, Oppenheimer, Pavlov, Pethick, Reynolds, Schaffner, Schertler, Schertler, Schertler, Shapiro, Thorsett, Thorsett, Thorsson, Tolman, van Kerkwijk, Vija, Walter, Walter, Wasserman, Weber, Weldon, Witten, Zhang   +76 more
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Strange Quark Stars — A Review [PDF]

Symposium - International Astronomical Union, 2003
A pedagogical overview of strange quark matter and strange stars is presented. After a historical notation of the research and an introduction to quark matter, a major part is devoted to the physics and astrophysics of strange stars, with attention being paid to the possible ways by which neutron stars and strange stars can be distinguished in ...
openaire   +3 more sources

Electrical neutrality and $$\beta $$ β -equilibrium conditions in dense quark matter: generation of charged pion condensation by chiral imbalance

European Physical Journal C: Particles and Fields, 2020
The phase diagram of dense quark matter with chiral imbalance is considered with the conditions of electric neutrality and $$\beta $$ β -equilibrium. It has been shown recently that chiral imbalance can generate charged pion condensation (PC) in dense ...
T. G. Khunjua, K. G. Klimenko, R. N. Zhokhov   +2 more
doaj   +1 more source

Thermal Evolution and Light Curves of Young Bare Strange Stars [PDF]

, 2002
The cooling of a young bare strange star is studied numerically by solving the equations of energy conservation and heat transport for both normal and superconducting strange quark matter inside the star.
Ch. Schaab, D. Page, Dany Page, K. Rajagopal, K. P. Levenfish, K. P. Levenfish, M. Alford, M. Lyutikov, N. Iwamoto, O. Yu. Gnedin, P. Haensel, S. E. Woosley, V. V. Usov, V. V. Usov, Vladimir V. Usov   +14 more
core   +2 more sources

Binary Neutron-Star Mergers with a Crossover Transition to Quark Matter

Universe, 2023
This paper summarizes recent work on the possible gravitational-wave signal from binary neutron-star mergers in which there is a crossover transition to quark matter.
Grant J. Mathews, Atul Kedia, Hee Il Kim, In-Saeng Suh   +3 more
doaj   +1 more source

Quark-Novae in massive binaries : a model for double-humped, hydrogen-poor, superluminous Supernovae

, 2015
LSQ14bdq and SN 2006oz are super-luminous, hydrogen-poor, SNe with double-humped light curves. We show that a Quark-Nova (QN; explosive transition of the neutron star to a quark star) occurring in a massive binary, experiencing two Common Envelope (CE ...
Koning, Nico, Leahy, Denis, Ouyed, Rachid   +2 more
core   +1 more source

Probing the composition of sub-millisecond rotating compact stars by r-modes instability [PDF]

, 2012
We investigate the implications of the r-modes instability on the composition of a compact star rotating at a sub-millisecond period. In particular, the only viable astrophysical scenario for such an object, wich might present inside the Low Mass X-ray ...
Drago, Alessandro, Pagliara, Giuseppe
core   +1 more source