arXiv Open Access 2020

First day of type IIP supernova SN 2013fs: H$α$ from preshock accelerated gas

Nikolai Chugai

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Abstrak

I explore the origin of an asymmetry of the H$α$ emission from a circumstellar (CS) shell around type IIP supernova SN 2013fs in the spectrum taken 10.3\,h after the shock breakout. A spherical model of the H$α$ emission from the CS shell that takes into account a preshock gas acceleration by the supernova radiation permits us to successfully reproduce the \ha H$α$ profile. Principal factors responsible for the H$α$ asymmetry are the high velocity of the accelerated CS preshock gas ($\sim 3000$\,km s$^{-1}$) and a low H$α$ Sobolev optical depth in a combination with an occultation of the H$α$ emission by the photosphere.

Topik & Kata Kunci

astro-ph.HE astro-ph.SR

Penulis (1)

Nikolai Chugai

Format Sitasi

APA MLA BibTeX

Chugai, N. (2020). First day of type IIP supernova SN 2013fs: H$α$ from preshock accelerated gas. https://arxiv.org/abs/2005.09920

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Informasi Jurnal

Tahun Terbit: 2020
Bahasa: en
Sumber Database: arXiv
Akses: Open Access ✓