English
Related papers

Related papers: Neutrino energy and momentum emission from magneti…

200 papers

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

Using the Kadanoff-Baym formalism, we perform a detailed study of neutrino-antineutrino synchrotron emission from strongly magnetized, dense quark matter under conditions relevant to compact stars. Starting from an exact expression for the…

High Energy Physics - Phenomenology · Physics 2025-08-12 Ritesh Ghosh , Igor A. Shovkovy

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

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

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

Some neutron stars known as magnetars possess very strong magnetic fields, with surface fields as large as $10^{15}\,\rm G$ and internal fields that are possibly stronger. Recent observations of the radio pulsar GLEAM-X J1627 suggest it may…

Nuclear Theory · Physics 2025-03-04 Mia Kumamoto , Catherine Welch

We study the synchrotron emission of neutrino pairs by relativistic, degenerate electrons in strong magnetic fields. Particular attention is paid to the case in which the dominant contribution comes from one or several lowest cyclotron…

Astrophysics · Physics 2007-05-23 V. G. Bezchastnov , P. Haensel , A. D. Kaminker , D. G. Yakovlev

We report on the effects of strong magnetic fields on neutrino emission in the modified Urca process. We show that the effect of Landau levels on the various Urca pairs affects the neutrino emission spectrum and leads to an angular…

High Energy Astrophysical Phenomena · Physics 2022-12-07 Michael Famiano , Grant Mathews , A. Baha Balantekin , Toshitaka Kajino , Motohiko Kusakabe , Kanji Mori

In the presence of strong magnetic field reported to have been observed on the surface of some neutron stars and on what are called Magnetars, a host of physical phenomenon from the birth of a neutron star to free streaming neutrino cooling…

High Energy Physics - Phenomenology · Physics 2007-05-23 Ashok Goyal

Magnetars are neutron stars endowed with surface magnetic fields of the order of $10^{14}-10^{15}$~G, and with presumably much stronger fields in their interior. As a result of Landau quantization of electron motion, the neutron-drip…

High Energy Astrophysical Phenomena · Physics 2016-07-21 N. Chamel , Y. D. Mutafchieva , Zh. K. Stoyanov , L. M. Mihailov , R. L. Pavlov

The neutrino emissivity of compact stars is investigated in this work. We consider stars consisting of nuclear as well as quark matter for this purpose. Different models are used to calculate the composition of nuclear and quark matter and…

Nuclear Theory · Physics 2009-10-28 Sanjay K. Ghosh , S. C. Phatak , P. K. Sahu

We study neutrino emission from a normal, ungapped, quark phase in the core of a compact star. Neutrino emission from non-interacting quark matter leads to an emissivity that scales as $\epsilon\sim T^7$. We show that the emissivity is…

Astrophysics · Physics 2009-11-10 Thomas Schafer , Kai Schwenzer

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…

In this paper we discuss in detail the quantization of Landau energy levels of a strongly magnetized and completely degenerate relativistic electron gas in neutron stars. In particular, we focus on the Fermi energy dependence of the…

High Energy Astrophysical Phenomena · Physics 2016-12-15 Qiu-he Peng , Jie Zhang , Chih-kang Chou , Zhi-fu Gao

We study the neutrino interaction rates through charged as well as neutral current weak interactions in hot, dense magnetized matter. At densities near the neutrino sphere, matter in the presence of intense magnetic field is polarized and…

High Energy Physics - Phenomenology · Physics 2010-01-06 Ashok Goyal

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

We study consistently the effects of magnetic field on hot and dense matter. In particular, we look for differences that arise due to assumptions that reproduce the conditions produced in particle collisions or astrophysical scenarios, such…

Nuclear Theory · Physics 2023-09-28 J. Peterson , P. Costa , R. Kumar , V. Dexheimer , R. Negreiros , C. Providencia

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 derive exact expressions for the cross section of neutrino scattering on electrons in dense, hot stellar matter, in the presence of strong magnetic fields. Numerical calculations of the scattering cross sections at various densities,…

Astrophysics · Physics 2009-10-28 V. G. Bezchastnov , P. Haensel

In this paper, an approximate method of calculating the Fermi energy of electrons ($E_{F}(e)$) in a high-intensity magnetic field, based on the analysis of the distribution of a neutron star magnetic field, has been proposed. In the…

High Energy Astrophysical Phenomena · Physics 2013-09-03 Z. F. Gao , N. Wang , D. L. Song , J. P. Yuan , C. K. Chou
‹ Prev 1 2 3 10 Next ›