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In a superhigh magnetic field, direct Urca reactions can proceed for an arbitrary proton concentration. Since only the electrons with high energy $E$ ($E > Q$, $Q$ is the threshold energy of inverse $\beta-$decay) at large Landau levels can…

High Energy Astrophysical Phenomena · Physics 2013-12-11 Z. F. Gao , N. Wang , J. P. Yuan , L. Jiang , D. L. Song

We compute the thermal conductivity and thermoelectric power (thermopower) of the inner crust of compact stars across a broad temperature-density domain relevant for proto-neutron stars, binary neutron-star mergers, and accreting neutron…

High Energy Astrophysical Phenomena · Physics 2025-12-02 Henrik Danielyan , Arus Harutyunyan , Armen Sedrakian

Neutron star models with maximum mass close to $2 \ M_{\odot}$ reach high central densities, which may activate nucleonic and hyperon direct Urca neutrino emission. To alleviate the tension between fast theoretical cooling rates and thermal…

High Energy Astrophysical Phenomena · Physics 2021-11-04 F. Anzuini , A. Melatos , C. Dehman , D. Viganò , J. A. Pons

Assuming that the timescale of the magnetic field decay is approximately equal to that of the stellar cooling via neutrino emission, we obtain a one-to-one relationship between the effective surface thermal temperature and the inner…

High Energy Astrophysical Phenomena · Physics 2013-12-09 Z. F. Gao , N. Wang , Q. H. Peng

Based on the magnetorotational model of a supernova explosion with core collapse, we investigate the significant processes of neutrino heating of the supernova shock. These processes should be taken into account in self-consistent modeling,…

Astrophysics · Physics 2007-05-23 A. A. Gvozdev , I. S. Ognev

We study the relation between the mean effective surface temperature T_s and the internal temperature T_b for magnetic neutron stars, assuming that the magnetic field near the surface has a presumably small-scale structure. The…

Astrophysics · Physics 2007-05-23 A. Y. Potekhin , V. Urpin , G. Chabrier

Electron capture and beta-decay rates for nuclear pairs in sd-shell are evaluated at high densities and high temperatures relevant to the final evolution of electron-degenerate O-Ne-Mg cores of stars with the initial masses of 8-10 solar…

Solar and Stellar Astrophysics · Physics 2016-02-17 Toshio Suzuki , Hiroshi Toki , Ken'ichi Nomoto

Recently launched x-ray telescopes have discovered several candidate isolated neutron stars. The thermal radiation from these objects may potentially constrain our understanding of nuclear physics in a realm inaccessible to terrestrial…

Astrophysics · Physics 2009-10-30 Jeremy S. Heyl , Lars Hernquist

Electron heating in an ultracold neutral plasma is modeled using classical molecular dynamics simulations in the presence of an externally applied magnetic field. A sufficiently strong magnetic field is found to reduce disorder induced…

Plasma Physics · Physics 2018-02-14 Sanat Kumar Tiwari , Scott D. Baalrud

We study the thermal structure of neutron stars with magnetized envelopes composed of accreted material, using updated thermal conductivities of plasmas in quantizing magnetic fields, as well as equation of state and radiative opacities for…

Astrophysics · Physics 2009-11-07 A. Y. Potekhin , D. G. Yakovlev , G. Chabrier , O. Y. Gnedin

Observations of soft X-ray transients in quiescence suggest the existence of heat sources in the crust of accreting neutron stars. Heat is thought to be released by electroweak and nuclear processes triggered by the burying of ashes of…

High Energy Astrophysical Phenomena · Physics 2018-12-12 A. F. Fantina , J. L. Zdunik , N. Chamel , J. M. Pearson , P. Haensel , S. Goriely

The present work investigates electron transport and heating mechanisms using an (r, z) particle-in-cell (PIC) simulation of a typical rf-driven axisymmetric magnetron discharge with a conducting target. It is shown that for the considered…

The capture of electrons by the nucleus $^{7}Be$ from the three-body initial state $p+e^{-}+^{7}Be$ in the continuum is studied. On the basis of the expansion of the three-body continuum wave function in the small parameter $\epsilon\approx…

Astrophysics · Physics 2008-11-26 V. B. Belyaev , M. Tater , E. Truhlik

Effects of microwave radiation on magnetoresistance are analyzed in a balance-equation scheme that covers regimes of inter- and intra-Landau level processes and takes account of photon-asissted electron transitions as well as…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 X. L. Lei , S. Y. Liu

Electron captures are amongst the most important weak interaction rates related to the dynamics of stellar core collapse. They play a key role in the gravitational collapse of the core of a massive star triggering the supernova explosion.…

Nuclear Theory · Physics 2011-08-04 Jameel-Un Nabi , Muhammad Sajjad , Muneeb-Ur Rahman

Cooling of neutron stars with dipole magnetic fields is simulated using a realistic model of the anisotropic surface temperature distribution produced by magnetic fields. Suppression of the electron thermal conductivity of outer stellar…

Astrophysics · Physics 2011-05-23 Yu. A. Shibanov , D. G. Yakovlev

Context: Many thermally emitting isolated neutron stars have magnetic fields larger than 10^13 G. A realistic cooling model that includes the presence of high magnetic fields should be reconsidered. Aims: We investigate the effects of…

Astrophysics · Physics 2009-11-13 Deborah N. Aguilera , José A. Pons , Juan A. Miralles

We link complex many-body correlations, which play a decisive role in the structural properties of atomic nuclei, to the electron capture occurring during star evolution. The recently developed finite-temperature response theory, taking…

Nuclear Theory · Physics 2021-03-03 Elena Litvinova , Caroline Robin

Magnetic moment of electron at finite temperature is directly related to the modified electron mass in the background heat bath. Magnetic moment of electron gets modified when it couples with the magnetic field at finite temperature through…

High Energy Physics - Theory · Physics 2015-06-04 Samina S. Masood , Mahnaz Q. Haseeb

Electron capture rates on \emph{fp}-shell nuclei play a pivotal role in the dynamics of stellar evolution and core collapse. These rates play a crucial role in the gravitational collapse of the core of a massive star activating the…

Nuclear Theory · Physics 2025-05-05 Muhammad Majid , Jameel-Un Nabi