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## EPJ Web of Conferences, Volume 201 (2019), The XXII International Scientific Conference of Young Scientists and Specialists (AYSS-2018)

Vol. 201: The XXII International Scientific Conference of Young Scientists and Specialists (AYSS-2018).
EDP Sciences, 2019.

Under the general editorship: I. Bobrikov, V. Chudoba, O. Derenovskaya, A. Friesen, A. Verkheev

We study the effect of non-standard neutrino interactions (NSIs) on the growth of instabilities in neutrino energy spectra of a core-collapse supernova for different neutrino intensities and/or types of NSIs, notably including the exotic neutrino magnetic moment. Although it is usually attested that instabilities virtually smear out all potentially observable signatures, we show that, instead, there are regimes in which they act as a magnifying glass, bringing tiny effects to the eye of the observer.

Shustov P., Kharlanov O., , in : EPJ Web of Conferences, Volume 201 (2019), The XXII International Scientific Conference of Young Scientists and Specialists (AYSS-2018). Vol. 201: The XXII International Scientific Conference of Young Scientists and Specialists (AYSS-2018).: EDP Sciences, 2019. P. 09006.

We study the effect of non-standard neutrino interactions (NSIs) on the growth of instabilities in neutrino energy spectra of a core-collapse supernova for different neutrino intensities and/or types of NSIs, notably including the exotic neutrino magnetic moment. Although it is usually attested that instabilities virtually smear out all potentially observable signatures, we show that, instead, ...

Added: February 10, 2020

Shustov P., Kharlanov O., , in : EPJ Web of Conferences, Volume 201 (2019), The XXII International Scientific Conference of Young Scientists and Specialists (AYSS-2018). Vol. 201: The XXII International Scientific Conference of Young Scientists and Specialists (AYSS-2018).: EDP Sciences, 2019. P. 09006.

We study the effect of non-standard neutrino interactions (NSIs) on the growth of instabilities in neutrino energy spectra of a core-collapse supernova for different neutrino intensities and/or types of NSIs, notably including the exotic neutrino magnetic moment. Although it is usually attested that instabilities virtually smear out all potentially observable signatures, we show that, instead, ...

Added: February 10, 2020

Диденкулова (Шургалина) Е. Г., Кокорина А. В., Slunyaev A., Вычислительные технологии 2019 Т. 24 № 2 С. 52-66

The details of the numerical scheme and the method of specifying the initial conditions for the simulation of the irregular dynamics of soliton ensembles within the framework of equations of the Korteweg – de Vries type are given using the example of the modified Korteweg – de Vries equation with a focusing type of nonlinearity. ...

Added: April 17, 2019

Eminov P. A., Neutrino spin and dispersion in magnetized medium / Cornell University Library. Series --- "High Energy Physics - Phenomenology (hep-ph)". 2015. No. 1.

The neutrino dispersion in the magnetized medium was analyzed as a function of the neutrino spin and mass. It was shown that in a super-strong magnetic field plasma contribution to the neutrino energy greatly exceeds the analogous correction in the field-free case. ...

Added: February 26, 2016

A.P.Tyutnev, V.S. Saenko, A.D. Zhadov et al., Polymer Science - Series A 2020 Vol. 62 No. 3 P. 300-306

Abstract—The electron transport is studied experimentally by measuring pulsed radiation-induced conductivity
in polyetheleneterephthalate under bulk irradiation of polymer films by fast electron pulses in a smallsignal
regime. Numerical simulation is performed using a multiple trapping model with an exponential energy
trap distribution. It is shown that, contrary to the reported interpretation of this phenomenon, there is no
electron extraction ...

Added: May 8, 2020

Slunyaev A., Кокорина А. В., Water Waves, Springer 2019 P. 1-20

The issue of accounting of the wave breaking phenomenon in direct numerical simulations of oceanic waves is discussed. It is emphasized that this problem is crucial for the deterministic description of waves, and also for the dynamical calculation of extreme wave statistical characteristics, such as rogue wave height probability, asymmetry, etc. The conditions for accurate ...

Added: October 13, 2019

Chabchoub A., Slunyaev A., Hoffmann N. et al., Frontiers in Physics 2021 Vol. 9 Article 633549

Solitons are coherent structures that describe the nonlinear evolution of wave localizations in hydrodynamics, optics, plasma and Bose-Einstein condensates. While the Peregrine breather is known to amplify a single localized perturbation of a carrier wave of finite amplitude by a factor of three, there is a counterpart solution on zero background known as the degenerate ...

Added: August 25, 2021

Silaev M. A., V. A. Silaeva, Journal of Physics: Condensed Matter 2013 Vol. 25 No. 22 P. 1-10

We investigate the multiquantum vortex states in a type-II superconductor in both 'clean' and 'dirty' regimes defined by impurity scattering rate. Within a quasiclassical approach we calculate self-consistently the order parameter distributions and electronic local density of states (LDOS) profiles. In the clean case we find the low temperature vortex core anomaly predicted analytically by ...

Added: November 19, 2013

Tyugin D. Y., Kurkina O. E., Kurkin A. A., Фундаментальная и прикладная гидрофизика 2011 Т. 4 № 2 С. 32-44

In this paper software package for numerical modeling of transformation and propagation of internal gravity waves (IGW) in the World Ocean is presented. Short overview of implemented numerical models is given. They are: extended nonlinear evolutionary equation of Korteveg-de-Vries type with combined nonlinearity with variable coefficients (Gardner equation) and ray model reproducing the effect of ...

Added: September 30, 2012

Вазаева Н. В., Чхетиани О. Г., Максименков Л. О. et al., Вычислительная механика сплошных сред 2017 Т. 10 № 2 С. 197-211

The nonlinear modes of coherent structure development in the Atmospheric boundary layer are investigated. Two-scale model of Atmospheric boundary layer is used in the calculation. The velocity field splits into large-scale profile of horizontal wind velocity and threescale velocity field. The former depends only on the vertical coordinate. The latter is connected with roll circulation ...

Added: January 17, 2018

Igoshev A., Popov S., Monthly Notices of the Royal Astronomical Society 2020 Vol. 499 No. 2 P. 2826-2835

Recently, Parthsarathy et al. analysed long-term timing observations of 85 young radio pulsars. They found that 15 objects have absolute values of braking indices ranging ∼10–3000, far from the classical value n = 3. They also noted a mild correlation between measured value of n and characteristic age of a radio pulsar. In this article, we systematically ...

Added: October 23, 2020

Ofengeim D., Гусаков М. Е., Physical Review D - Particles, Fields, Gravitation and Cosmology 2018 Vol. 98 No. 4 P. 043007

In [Gusakov et al. Phys. Rev. D 96, 103012 (2017), 10.1103/PhysRevD.96.103012], we proposed a self-consistent method to study the quasistationary evolution of the magnetic field in neutron-star cores. Here, we apply it to calculate the instantaneous particle velocities and other parameters of interest, which are fixed by specifying the magnetic field configuration. Interestingly, we found ...

Added: November 11, 2020

Yakovlev D., International Journal of Modern Physics A 2020 Vol. 35 No. 2-3 P. 1-8

Neutron stars contain superdense matter in their interiors. Characteristic densities in their cores are several times higher than the standard density of nuclear matter. This matter is so dense that it would be natural to assume that frequent particle collisions produce immediate equilibration. However, because of the slowness of some reactions, the equilibration with respect ...

Added: November 13, 2020

Даниленко А. А., Карпова А. В., Ofengeim D. et al., Monthly Notices of the Royal Astronomical Society 2020 Vol. 493 No. 2 P. 1874-1887

We report results of XMM-Newton observations of a γ-ray pulsar J0633+0632 and its wind nebula. We reveal, for the first time, pulsations of the pulsar X-ray emission with a single sinusoidal pulse profile and a pulsed fraction of 23 ± 6 per cent in the 0.3-2 keV band. We confirm previous Chandra findings that the ...

Added: November 11, 2020

Semyonov V., Timofeev A., Математическое моделирование 2018 Т. 30 № 2 С. 3-17

Model allowing analytical and numerical studying of dusty plasma system is used to describe dynamics of monolayer of dusty particles. Mechanism of energy transfer between horizontal and vertical particles motion based on parametric resonance is described by an extended Mathieu equation. Resonance regions and growth rates of dust particles energy are obtained. Conditions of resonance ...

Added: May 24, 2018

Slunyaev A., Physics of Fluids 2021 Vol. 33 Article 036606

The observation of a wave group persisting for more than 200 periods in the direct numerical simulation of nonlinear unidirectional irregular water waves in deep water is discussed. The simulation conditions are characterized by parameters realistic for broad-banded waves in the sea. Through solution of the associated scattering problem for the nonlinear Schr€odinger equation, the group is ...

Added: March 19, 2021

Хохрякова А. Д., Popov S., Journal of High Energy Astrophysics 2019 Vol. 24 P. 1-5

Coalescences of neutron stars and white dwarfs are relatively frequent phenomena, outnumbering other types of compact object mergers (neutron stars and black holes without involving white dwarfs) altogether. Such event potentially can produce not only optical, but also an X-ray burst. Transient source CDF-S XT2 (Xue et al., 2019) can be an example of this ...

Added: October 15, 2019

Chaikin E. A., Kaminker A. D., Yakovlev D.G., Astrophysics and Space Science 2018 No. 363 P. 209

We study thermal relaxation in a neutron star after internal heating events (outbursts) in the crust. We consider thin and thick spherically symmetric heaters, superfluid and non-superfluid crusts, stars with open and forbidden direct Urca processes in their cores. In particular, we analyze long-term thermal relaxation after deep crustal heating produced by nuclear transformations in ...

Added: November 13, 2020

Beznogov M. V., Potekhin A. Y., Yakovlev D., Physics Reports 2021 Vol. 919 P. 1-68

Near the surface of any neutron star there is a thin heat blanketing envelope that produces substantial thermal insulation of warm neutron star interiors and that relates the internal temperature of the star to its effective surface temperature. Physical processes in the blanketing envelopes are reasonably clear but the chemical composition is not. The latter ...

Added: October 22, 2021

Abbott B. P., Abbott R., Abbott T. D. et al., Astrophysical Journal Letters 2017 Vol. 848 No. 2 P. 1-59

On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of ∼ 1.7 {{s}} with respect to the ...

Added: January 27, 2018

Kanavets V. I., Mozgovoi Y. D., Khritkin S. A., Радиотехника и электроника 2014 Т. 59 № 8 С. 836-842

Проведено численное моделирование процессов взаимодействия в электронно-позитронном веществе (ЭПВ) в рамках научного направления – гамма-электроника, в котором исследуются проблемы получения и длительного существования ЭПВ с экстремально большой энергией, выделяющейся в процессе отложенной аннигиляции. Исследованы процессы взаимодействия в ЭПВ методом классической модели крупных частиц и при использовании макроскопических волновых функций электронов и позитронов квантовой теории. В ...

Added: July 8, 2014

Abolmasov P., Biryukov A., Monthly Notices of the Royal Astronomical Society 2020 Vol. 496 No. 1 P. 13-18

Magnetic fields of strongly magnetized stars can trap conducting matter due to frozen-in condition. In the force-free regime, the motion of the matter along the field lines may be considered in the 'bead on a wire' approximation. Such a motion, if gravity and centrifugal forces are taken into account, has equilibrium points, some of which ...

Added: October 31, 2022

Kondratyev I., Моисеенко С. Г., Бисноватый-Коган Г. С. et al., Астрономический журнал 2020 Т. 97 № 3 С. 206-224

The results of three-dimensional numerical simulation of heat transfer in the outer layers of magnetized neutron stars are presented. Determining the structure of the magnetic field on a neutron star surface is an important task of modern astrophysics. In the presence of strong magnetic fields, the medium becomes anisotropic, and the laws of heat conduction ...

Added: October 14, 2021

Biryukov A., Abolmasov P., Monthly Notices of the Royal Astronomical Society 2021 Vol. 505 No. 2 P. 1775-1786

The rotation of a magnetized accreting neutron star (NS) in a binary system is described by its spin period and two angles: spin inclination α with respect to the orbital momentum and magnetic angle χ between the spin and the magnetic moment. Magnetospheric accretion spins the NS up and adjusts its rotation axis, decreasing α ...

Added: October 31, 2022

Семин С. В., Kurkina O. E., Kurkin A. A. et al., Труды НГТУ им. Р.Е. Алексеева 2012 № 2(95) С. 48-65

Purpose: Numerical modeling of internal baroclinic disturbances of different shapes in a model lake with variable depth, analysis of velocity field of wave-induced current, especially in the near-bed layer.
Approach: The study is carried out with the use of numerical full nonlinear nonhydrostatic model for stratified fluid.
Findings: The full nonlinear numerical modeling of internal wave dynamics ...

Added: October 6, 2012