Transient AT2018cow: A Scenario with an Equatorial Disk

To explain the presence of early X-ray emission from the object AT2018cow, we have studied a scenario with the presence of dense ejecta in the system in the equatorial plane. Based on a simplified one-dimensional model, we have developed a two-dimensional model with a dense equatorial disk in the sy...

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Bibliographic Details
Published inAstronomy letters Vol. 47; no. 11; pp. 738 - 745
Main Authors Urvachev, E. M., Blinnikov, S. I., Nomoto, K.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.11.2021
Springer Nature B.V
Subjects
Astronomy
Astrophysics and Astroparticles
Ejecta
Emission analysis
High temperature
Hydrodynamics
Observations and Techniques
One dimensional models
Physics
Physics and Astronomy
Radiation
Shock waves
Two dimensional models
X-ray emissions
light curves
supernovae
radiative transfer
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Summary:To explain the presence of early X-ray emission from the object AT2018cow, we have studied a scenario with the presence of dense ejecta in the system in the equatorial plane. Based on a simplified one-dimensional model, we have developed a two-dimensional model with a dense equatorial disk in the system. As a result of two-dimensional radiation-hydrodynamics simulations with the multidimensional parallel FRONT code, we have shown that the shock wave propagates through such a disk more slowly than through the original low-density cloud and gives rise to a high-temperature region visible in X-rays in a certain range of viewing angles.
ISSN:1063-7737
1562-6873
DOI:10.1134/S1063773721110074