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The evolution of relative frequencies of ONe and CO SNe Ia

Publikováno v: MNRAS, 525, 952 (2023)

In this population synthesis work we study a variety of possible origin channels of supernovae type Ia (SNe Ia) Among them mergers of carbon-oxygen (CO) and oxygen-neon (ONe) white dwarfs (WDs) under the influence of gravitational waves are considere

Externí odkaz: http://arxiv.org/abs/2307.16556

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Population synthesis of AX J1745.6-2901 X-ray nova type binaries with rapidly decreasing orbital periods

Autor: Bogomazov, A. I., Cherepashchuk, A. M., Khruzina, T. S., Tutukov, A. V.

Publikováno v: MNRAS 514, 5375 (2022)

The neutron star low mass X-ray binary (LMXB) AX J1745.6-2901 was detected an anomalously fast decrease of orbital period. The decreasing rate of orbital period exceeds the contribution of all processes extracting angular momentum from the binary sta

Externí odkaz: http://arxiv.org/abs/2206.04025

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A comprehensive analysis of NGC 2158 in Gaia era: photometric parameters, apex and orbit

Autor: Sariya, Devesh P., Jiang, Ing-Guey, Sizova, M. D., Postnikova, E. S., Bisht, D., Chupina, N. V., Vereshchagin, S. V., Yadav, R. K. S., Rangwal, G., Tutukov, A. V.

We present an investigation of NGC 2158 using Gaia-DR2 data. We identified 800 most likely cluster members with membership probability higher than 90%. The mean proper motions of this object are determined as (mu_{x}=-0.203 \pm 0.003, mu_{y}=-1.99 \p

Externí odkaz: http://arxiv.org/abs/2012.06342

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Evolution of a Viscous Protoplanetary Disk with Convectively Unstable Regions. II. Accretion Regimes and Long-Term Dynamics

Autor: Maksimova, L. A., Pavlyuchenkov, Ya. N., Tutukov, A. V.

In this article, we proceed to study convection as a possible factor of episodic accretion in protoplanetary disks. Within the model presented in Article~I, the accretion history is analyzed at different rates and areas of matter inflow from the enve

Externí odkaz: http://arxiv.org/abs/2009.07750

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Evolution of a Viscous Protoplanetary Disk with Convectively Unstable Regions

Autor: Pavlyuchenkov, Ya. N., Tutukov, A. V., Maksimova, L. A., Vorobyov, E. I.

The role of convection in the gas-dust accretion disk around a young star is studied. The evolution of a Keplerian disk is modeled using the Pringle equation, which describes the time variations of the surface density under the action of turbulent vi

Externí odkaz: http://arxiv.org/abs/1912.08572

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Akademický článek

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Spin of LIGO/VIRGO merging black holes as the result of binary evolution

Autor: Bogomazov, A. I., Lipunov, V. M., Tutukov, A. V., Cherepashchuk, A. M.

Recently discovered bursts of gravitational waves provide a good opportunity to verify the current view on the evolution of close binary stars. Modern population synthesis computer programs help to study this evolution from two main sequence stars up

Externí odkaz: http://arxiv.org/abs/1811.02294

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Akademický článek

Gravitational Capture as a Possible Scenario Origin of the Moon.

Autor: Tutukov, A. V.¹ (AUTHOR) atutukov@inasan.rssi.ru, Dremova, G. N.² (AUTHOR) G.N.Dryomova@mail.ru, Dremov, V. V.² (AUTHOR) V.V.Dryomov@vniitf.ru

Publikováno v: Astronomy Reports. Nov2023, Vol. 67 Issue 11, p1236-1250. 15p.