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Title: Cassiopeia A: Supernova explosion and expansion simulations under strong asymmetry conditions

Abstract

We propose a model for the explosion of a supernova and the expansion of its ejecta in the presence of a strong initial asymmetry (at the explosion time) in the central part of the star (core) and a possible smallscale asymmetry in the peripheral regions. The Chandra and NuSTAR observations of ejecta in the Cassiopeia A supernova remnant are analyzed. Based on our 1D and 2D numerical simulations performed using the DIANA and NUTCY codes, we propose a model for the explosion and expansion of ejecta that explains the observed experimental data where the materials initially located in the central region of the star end up on the periphery of the cloud of ejecta.

Authors:
;  [1];  [2];  [1]
  1. Russian Academy of Sciences, Lebedev Physics Institute (Russian Federation)
  2. Russian Academy of Sciences, Keldysh Institute of Applied Mathematics (Russian Federation)
Publication Date:
OSTI Identifier:
22617188
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 123; Journal Issue: 3; Other Information: Copyright (c) 2016 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASYMMETRY; COMPUTERIZED SIMULATION; EXPANSION; EXPLOSIONS; STARS; SUPERNOVA REMNANTS; USA

Citation Formats

Yakhin, R. A., E-mail: yakhin.rafael@gmail.com, Rozanov, V. B., Zmitrenko, N. V., and Stepanov, R. V. Cassiopeia A: Supernova explosion and expansion simulations under strong asymmetry conditions. United States: N. p., 2016. Web. doi:10.1134/S1063776116090107.
Yakhin, R. A., E-mail: yakhin.rafael@gmail.com, Rozanov, V. B., Zmitrenko, N. V., & Stepanov, R. V. Cassiopeia A: Supernova explosion and expansion simulations under strong asymmetry conditions. United States. doi:10.1134/S1063776116090107.
Yakhin, R. A., E-mail: yakhin.rafael@gmail.com, Rozanov, V. B., Zmitrenko, N. V., and Stepanov, R. V. Thu . "Cassiopeia A: Supernova explosion and expansion simulations under strong asymmetry conditions". United States. doi:10.1134/S1063776116090107.
@article{osti_22617188,
title = {Cassiopeia A: Supernova explosion and expansion simulations under strong asymmetry conditions},
author = {Yakhin, R. A., E-mail: yakhin.rafael@gmail.com and Rozanov, V. B. and Zmitrenko, N. V. and Stepanov, R. V.},
abstractNote = {We propose a model for the explosion of a supernova and the expansion of its ejecta in the presence of a strong initial asymmetry (at the explosion time) in the central part of the star (core) and a possible smallscale asymmetry in the peripheral regions. The Chandra and NuSTAR observations of ejecta in the Cassiopeia A supernova remnant are analyzed. Based on our 1D and 2D numerical simulations performed using the DIANA and NUTCY codes, we propose a model for the explosion and expansion of ejecta that explains the observed experimental data where the materials initially located in the central region of the star end up on the periphery of the cloud of ejecta.},
doi = {10.1134/S1063776116090107},
journal = {Journal of Experimental and Theoretical Physics},
number = 3,
volume = 123,
place = {United States},
year = {Thu Sep 15 00:00:00 EDT 2016},
month = {Thu Sep 15 00:00:00 EDT 2016}
}