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Related papers: Neutrino-pair emission in a strong magnetic field

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The effect of the magnetic field on the energy loss rate in the direct Urca reactions is studied. The general expression for the neutrino emissivity at arbitrary magnetic field B is derived. The main emphasis is laid on a case, in which the…

Astrophysics · Physics 2007-05-23 D. A. Baiko , D. G. Yakovlev

We study neutrino and antineutrino emission from the direct Urca process in neutron-star matter in the presence of strong magnetic fields. We calculate the neutrino emissivity of the direct Urca process, whereby a neutron converts to a…

We study neutrino energy emission rates (emissivities) due to electron bremsstrahlung produced by $ee$ and $ep$ collisions in the superfluid neutron star cores. The neutrino emission due to $ee$ collisions is shown to be the dominant…

Astrophysics · Physics 2011-03-17 A. D. Kaminker , P. Haensel

The neutrino emissivities resulting from direct URCA processes in neutron stars are calculated in a relativistic Dirac-Hartree approach in presence of a magnetic field. In a quark or a hyperon matter environment, the emissivity due to…

Astrophysics · Physics 2009-10-30 Debades Bandyopadhyay , Somenath Chakrabarty , Prantick Dey , Subrata Pal

We calculate the emissivity for the direct URCA process in strongly magnetized, degenerate matter in neutron stars, under $\beta $-equilibrium. We show that, if the magnetic field is large enough for protons and electrons to be confined to…

Astrophysics · Physics 2009-10-30 L. B. Leinson , A. Perez

In this article the neutrino bremsstrahlung process is considered in presence of strong magnetic field, though the calculations for this process in absence of magnetic field are also carried out simultaneously. The electrons involved in…

High Energy Physics - Phenomenology · Physics 2008-11-26 Indranath Bhattacharyya

The emissivity for the neutrino pair synchrotron radiation in strong magnetic fields has been calculated both analytically and numerically for high densities and moderate temperatures, as can be found in neutron stars. Under these…

Astrophysics · Physics 2009-10-28 A. Vidaurre , A. Perez , H. Sivak , J. Bernabeu , J. M. Ibanez

We study the neutrino anti-neutrino pair synchrotron emission from electrons and protons in a relativistic quantum approach. This process occurs only under a strong magnetic field, and it is considered to be one of effective processes for…

High Energy Physics - Phenomenology · Physics 2020-04-15 Tomoyuki Maruyama A. Baha Balantekin , Myung-Ki Cheoun , Toshitaka Kajino , Grant J. Mathews

We study the effect of magnetic field on the dominant neutrino emission processes in neutron stars.The processes are first calculated for the case when the magnetic field does not exceed the critical value to confine electrons to the lowest…

High Energy Physics - Phenomenology · Physics 2015-06-25 Ashok Goyal , V. K. Gupta , Kanupriya , Vinita Tuli

The effect of a strong magnetic field on the dominant neutrino emissivity in strange stars is investigated. In ultra strong magnetic field, there exists an enhanced neutrino emission because the charged particles are confined to the lowest…

Astrophysics · Physics 2015-06-24 Liu Xuewen , Zheng Xiaoping , Hou Defu

Neutrino emission in cold neutron stars is dominated by the modified urca (murca) process and nucleon-nucleon bremsstrahlung. The standard emission rates were provided by Friman and Maxwell in 1979, effectively based on a chiral Lagrangian…

High Energy Physics - Phenomenology · Physics 2024-11-08 Salvatore Bottaro , Andrea Caputo , Damiano Fiorillo

Neutrino emission drives neutron star cooling for the first several hundreds of years after its birth. Given the low energy ($\sim$ keV) nature of this process, one expects very few nonstandard particle physics contributions which could…

Astrophysics · Physics 2009-11-10 Prashanth Jaikumar , K. R. S. Balaji , Charles Gale

Dense matter in compact stars cools efficiently by neutrino emission via the direct Urca processes n -> p + e + nu and p + e -> n + nu. Below the pairing phase transition temperature Tc these processes are suppressed - at asymptotically low…

Nuclear Theory · Physics 2009-11-10 Armen Sedrakian

The processes of neutrino (antineutrino) absorption and electron (positron) capture on nucleons provide the dominant mechanisms for heating and cooling the material between the protoneutron star and the stalled shock in a core-collapse…

Astrophysics · Physics 2009-11-10 Huaiyu Duan , Yong-Zhong Qian

We review the main neutrino emission mechanisms operating in dense quark matter under strong magnetic fields, with particular emphasis on conditions expected in the interiors of compact stars. We discuss the direct Urca and neutrino…

High Energy Physics - Phenomenology · Physics 2026-02-27 Igor A. Shovkovy , Ritesh Ghosh

A brief review is given of neutrino emission processes in dense matter, with particular emphasis on recent developments. These include direct Urca processes for nucleons and hyperons, which can give rise to rapid energy loss from the…

Astrophysics · Physics 2016-08-30 C. J. Pethick , Vesteinn Thorsson

The processes of electron neutrino capture on neutron and electron anti-neutrino capture on proton, and their reverse processes provide the dominant mechanisms for heating and cooling the material below the stalled shock in a core-collapse…

Astrophysics · Physics 2017-08-23 Huaiyu Duan , Yong-Zhong Qian

Based on the formalism by Kaminker et al. (Astron. Astrophys. 343 (1999) 1009) we derive an analytic approximation for neutrino-pair bremsstrahlung emissivity due to scattering of electrons by atomic nuclei in the neutron star crust of any…

Solar and Stellar Astrophysics · Physics 2015-06-23 D. D. Ofengeim , A. D. Kaminker , D. G. Yakovlev

Magnetars are a subclass of neutron stars whose intense soft-gamma-ray bursts and quiescent X-ray emission are believed to be powered by the decay of a strong internal magnetic field. We reanalyze neutrino emission in such stars in the…

Astrophysics · Physics 2009-11-11 Mario Riquelme , Andreas Reisenegger , Olivier Espinosa , Claudio Dib

We review the main neutrino emission mechanisms in neutron star crusts and cores. Among them are the well-known reactions such as the electron-positron annihilation, plasmon decay, neutrino bremsstrahlung of electrons colliding with atomic…

Astrophysics · Physics 2011-07-19 D. G. Yakovlev , A. D. Kaminker , O. Y. Gnedin , P. Haensel
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