Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Rachid Ouyed"'
Publikováno v:
Universe, Vol 10, Iss 3, p 115 (2024)
We propose a non-exotic electromagnetic solution (within the standard model of particle physics) to the cosmological 7Li problem based upon a narrow 2 MeV photo-emission line from the decay of light glueballs (LGBs). These LGBs form within color supe
Externí odkaz:
https://doaj.org/article/0a556c738dfa45308ca3b9086efb4634
Autor:
Rachid Ouyed
Publikováno v:
Universe, Vol 8, Iss 6, p 322 (2022)
A quark-nova is a hypothetical stellar evolution branch where a neutron star converts explosively into a quark star. Here, we discuss the intimate coupling between the micro-physics and macro-physics of the quark-nova and provide a prescription for h
Externí odkaz:
https://doaj.org/article/987848ece5b1429a8a30ca98ee33585d
Publikováno v:
Physics Letters B, Vol 777, Iss , Pp 184-190 (2018)
We simulate and study the microphysics of combustion (flame burning) of two flavored quark matter (u,d) to three flavored quark matter (u,d,s) in a trapped neutrino regime applicable to conditions prevailing in a hot proto-neutron star. The reaction
Externí odkaz:
https://doaj.org/article/27b3d975b03e4cbfb463bd04eb1e14ea
Publikováno v:
Universe, Vol 5, Iss 6, p 136 (2019)
Hadron-quark combustion in dense matter is a central topic in the study of phases in compact stars and their high-energy astrophysics. We critically reviewed the literature on hadron-quark combustion, dividing them into a “first wave” that treats
Externí odkaz:
https://doaj.org/article/8f667e416ada4f4783a291b5ad90dd8f
Publikováno v:
Universe, Vol 4, Iss 3, p 51 (2018)
The hadron–quark combustion front is a system that couples various processes, such as chemical reactions, hydrodynamics, diffusion, and neutrino transport. Previous numerical work has shown that this system is very nonlinear, and can be very sensit
Externí odkaz:
https://doaj.org/article/2e3ecfd7d91e4aa5aed8f0a4e16e14fc
Publikováno v:
Advances in Astronomy, Vol 2009 (2009)
If a quark-nova occurs inside a collapsar, the interaction between the quark-nova ejecta (relativistic iron-rich chunks) and the collapsar envelope leads to features indicative of those observed in Gamma Ray Bursts. The quark-nova ejecta collides wit
Externí odkaz:
https://doaj.org/article/4e7cd3379d1e4805861f93ecc575c9e9
Autor:
Denis Leahy, Rachid Ouyed
Publikováno v:
Advances in Astronomy, Vol 2009 (2009)
We present new analysis of the birth rate of AXPs and SGRS and their associated SNRs. Using Kolmogorov-Smirnov statistics together with parametric fits based on a robust estimator, we find a birth rate of ∼1/(1000 years) for AXPs/SGRs and their ass
Externí odkaz:
https://doaj.org/article/40c4212b3cf54ff0a50150468811030d
Autor:
Rachid Ouyed
Publikováno v:
Astrophysics in the XXI Century with Compact Stars ISBN: 9789811220937
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::397357c69b11c941f482b0c3098ca980
https://doi.org/10.1142/9789811220944_0002
https://doi.org/10.1142/9789811220944_0002
Publikováno v:
Journal of Mathematical Finance. :1-13
We have developed an extended model for stock price behaviour that is able to accommodate fat-tailed distributions with support as large as . The “homogeneously saturated” (HS) model avoids exponential price changes for large fluctuations by mean
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4be04759ba7e19eeb6d06454837ffd91
https://doi.org/10.4236/jmf.2018.81001
https://doi.org/10.4236/jmf.2018.81001
We show that old isolated neutron stars in groups and clusters of galaxies experiencing a Quark-Nova phase (QN: an explosive transition to a quark star) may be the source of FRBs. Each of the millions of fragments of the ultra-relativistic QN ejecta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba580ced1abd83bb28b9eec33051ac16