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Instabilities of Collective Neutrino Oscillations Induced by Non-standard Neutrino Interactions
P. 09006.
Shustov P., Kharlanov O.
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.
In book
Vol. 201: The XXII International Scientific Conference of Young Scientists and Specialists (AYSS-2018). , EDP Sciences, 2019
EDP Sciences, 2019
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
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
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
Didenkulova E., Талипова Т. Г., Диденкулов О. И., Экологические системы и приборы 2022 № 12 С. 55-64
The article presents the results of numerical simulation of the dynamics of solitary internal waves’ ensembles in a stratified (vertically inhomogeneous) ocean for hydrophysical conditions close to those on the Indian Ocean shelf. Ensembles of unipolar and bipolar solitons, as well as solitons and breathers with random amplitudes and phases are considerate. Estimates of the statistical characteristics of ...
Added: January 31, 2023
Marshirov V. V., Marshirova L. E., Марширов И. В., Литейное производство 2018 № 8 С. 28-32
A model that calculates the rates of cooling of liquid metal over the casting section atthe liquidus temperature by the finite difference method is created and programmed.By the cooling rates, the empirical formula determines the grain size. The following process parameters are taken into account: casting and molding materials, cast and mold dimensions, their initial ...
Added: October 12, 2018
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
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., / 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
Slunyaev A., Kokorina A., Physics of Fluids 2023 Vol. 35 No. 11 Article 117109
By means of the direct numerical simulation of directional waves on the surface of deep water, it is shown that extreme waves can exhibit
such asymmetry that the occurrence of deeper troughs is several times more likely on the wave rear slopes. This effect becomes most
pronounced in the case of steep short-crested waves. It is not ...
Added: December 20, 2023
Slunyaev A., Известия РАН. Физика атмосферы и океана 2023 Т. 59 С. 793-814
По результатам прямого численного моделирования нерегулярных нелинейных волн на поверхности глубокой воды в рамках трехмерных потенциальных уравнений гидродинамики определены
вклады различных волновых компонент (второй, третьей и разностной гармоник) в формирование
распределений вероятностей высот экстремальных волн, а также амплитуд гребней и ложбин. Проанализированы результаты моделирования с учетом 4- и 5-волновых нелинейных взаимодействий.
Разные нелинейные гармоники участвуют в формировании распределений ...
Added: December 20, 2023
A. V. Slunyaev, Shrira V. I., Physics of Fluids 2023 Vol. 35 No. 12 Article 126606
Rogue waves are known to be much more common on jet currents. A possible explanation was put forward in Shrira and Slunyaev
[“Nonlinear dynamics of trapped waves on jet currents and rogue waves,” Phys. Rev. E 89, 041002(R) (2014)] for the waves trapped on
current robust long-lived envelope solitary waves localized in both horizontal directions become possible, ...
Added: December 20, 2023
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
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
Derkacheva A., Gillet-Chaulet F., Mouginot J. et al., Cryosphere 2021 Vol. 15 No. 12 P. 5675-5704
Due to increasing surface melting on the Greenland ice sheet, better constraints on seasonally evolving basal water pressure and sliding speed are required by models. Here we assess the potential of using inverse methods on a dense time series of surface speeds to recover the seasonal evolution of the basal conditions in a well-documented region ...
Added: March 16, 2022
Meirmanov A. M., Galtsev O. V., Lithuanian Mathematical Journal 2018 Vol. 58 P. 284-308
In the paper, we consider the evolution of the free boundary separating two immiscible viscous fluids with different constant densities in an absolutely rigid solid body and in an elastic skeleton. The motion of the liquids is described by the Stokes equations driven by the input pressure and the force of gravity. For flows in ...
Added: October 30, 2020
Marshirov V. V., Marshirova L. E., Литейное производство 2017 № 9 С. 29-33
The presented mathematical model is based on the use of the finite difference method. The model is implemented as a web application and allows users to explore the features of the solidification process and calculate the frequency of impulse actions. Using the model, the required frequencies for casting with a thickness of 7 mm were ...
Added: November 13, 2017
Mikheev A. V., Теория. Практика. Инновации 2017 № 9 (21)
In this paper we consider the calculation of a dynamical system described by a second-order differential equation in which a fundamental system of solutions consisting of functions of exponential type is replaced by bounded functions of the Verhulst model. The time dependence of the forces acting on the dynamical system is analyzed, and the obtained ...
Added: September 6, 2017
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
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
Lutovinov A., Monthly Notices of the Royal Astronomical Society: Letters 2019 Vol. 482 No. 1 P. 14-18
We report results of a spectral and timing analysis of the X-ray pulsar XTE J1829-098 using data obtained with the NuSTAR observatory during an outburst in 2018 August. A strong absorption feature was detected at the energy of Ecyc ≃ 15 keV in the source spectrum. This feature was interpreted as a cyclotron resonance scattering ...
Added: February 7, 2019
Талипова Т. Г., Kurkina O. E., Rouvinskaya E. et al., Известия РАН. Физика атмосферы и океана 2015 Т. 51 № 1 С. 103-112
Распространение внутренних солитонов умеренной амплитуды в двухслойном океане переменной глубины исследуется в рамках уравнений Кортевега-де Вриза и Гарднера с переменными коэффициентами. Аналитическое решение получено с использованием асимптотических разложений по малому параметру – уклону дна. Теоретические результаты сопоставляются с численными, полученными в рамках моделирования примитивных уравнений гидродинамики. Обсуждается вероятность сохранения солитонной формы импульса по мере его ...
Added: November 7, 2013
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
Marshirov V. V., Marshirova L. E., Литейное производство 2015 № 9 С. 31-34
The article describes the information environment that allows users to simulate the process of solidification. In this environment, the user can calculate the formation of temperature fields and moving the fronts of phases. The results can be presented in tables and graphs. The information environment is accessible and open to change. Possibilities of practical use ...
Added: December 24, 2015
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