Effect of magnetic field on beta processes in a relativistic moderately degenerate plasma

Ognev, I. S.

doi:10.1134/s106377611610006x

Cited by 5 publications

(20 citation statements)

References 32 publications

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“…The momenta ℱ ( ) along the magnetic-field strength vector, reaction rates ( ) and energies ( ) for the processes with the neutrino emission coincide with ones in Ref. [28], when the approximation (17) for the distribution functions of electrons and positrons is not used.…”

Section: Analytical Resultssupporting

confidence: 72%

Influence of a magnetic field on beta-processes in supernova matter

Dobrynina

Ognev

2020

Phys. Rev. D

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An influence of a magnetic field on beta-processes is investigated under conditions of a corecollapse supernova. For realistic magnetic fields reachable in astrophysical objects we obtain simple analytical expressions for reaction rates of beta-processes as well as the energy and momentum transferred from neutrinos and antineutrinos to the matter. Based on the results of one-dimensional simulations of a supernova explosion, we found that, in the magnetic field with the strength ∼ 10 15 G, the quantities considered are modified by several percents only and, as a consequence, the magnetic-field effects can be safely neglected, considering neutrino interaction and propagation in a supernova matter. The analytical results can be also applied for accretion discs formed at a merger of compact objects in close binary systems.

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Section: Analytical Resultssupporting

confidence: 72%

Influence of a magnetic field on beta-processes in supernova matter

Dobrynina

Ognev

2020

Phys. Rev. D

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“…Calculations are based on an emissivity of a matter presented in Ref. [3]. Note that the result used is valid for an arbitrary magnetic field strength (it is restricted from above by the requirement of an existence of the spontaneous symmetry breaking in the Standard Model).…”

Section: Resultsmentioning

confidence: 99%

Impact of magnetic field on beta-processes in partially transparent medium

Dobrynina¹,

Ognev²

2020

Proceedings of European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2019)

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“…The same figure depicts the asymptotic form of the nondegenerate ( = 0) ultrarelativistic plasma in which, as noted above, the suppression this process by the magnetic field is the strongest. It follows from the results of numerical calculations [12] that the maximum suppression of the rate of the antineutrino production occurs in the magnetic field with the strength¯≈ 10 2 0 , and the magnitude of the suppression in this case is (¯)/¯(0) ≃ 0.86. The maximum suppression of the energy emitted in antineutrinos is shifted towards stronger fields,¯≈ 18 2 0 , and the suppression itself is slightly (2) has the most strong suppression by the magnetic field.…”

Section: Medium Transparent For Neutrinomentioning

confidence: 88%

“…A dependence of these quantities on the magnetic field strength and parameters of the medium is demonstrated. Other details of the processes presented here can be found in the recent paper [12].…”

Section: Introductionmentioning

confidence: 99%

Direct URCA Processes in Supernovae and Accretion Disks with Arbitrary Magnetic Field

Ognev

2017

EPJ Web Conf.

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Abstract. An effect of a magnetic field of an arbitrary strength on the beta-decay and reactions related with it by the crossing symmetry (the beta-processes) in supernovae and accretion disks around black holes is analyzed. Rates of the beta-processes and the energy and momentum transfered through them to an optically transparent matter are calculated. It is shown that the macroscopic momentum transferred to the medium increases linearly with the magnetic field strength and can substantially affect the dynamics of supernovae and accretion disks especially when a matter inside is degenerate. It is also demonstrated that the rates of the beta-processes and the energy deposition in these reactions for the magnetic field strength B 10 15 G, which is assumed to be typical in supernovae and accretion disks, are lower than in the absence of the field. This suppression is more pronounced for reactions with neutrinos.

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Effect of magnetic field on beta processes in a relativistic moderately degenerate plasma

Cited by 5 publications

References 32 publications

Influence of a magnetic field on beta-processes in supernova matter

Influence of a magnetic field on beta-processes in supernova matter

Impact of magnetic field on beta-processes in partially transparent medium

Direct URCA Processes in Supernovae and Accretion Disks with Arbitrary Magnetic Field

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