The explosion energy of the type IIP supernova SN 2013fs with a confined dense circumstellar shell

Abstract

The recent study of SN 2013fs flash spectrum suggests enormous for SN IIP explosion energy, far beyond possibilities of the neutrino mechanism. The issue of the explosion energy of SN 2013fs is revisited making use of effects of the early supernova interaction with the dense circumstellar shell. The velocity of the cold dense shell between reverse and forward shocks is inferred from the analysis of the broad \heii\,4686\,Å on day 2.4. This velocity alongside with other observables provide us with an alternative energy estimate of $\sim 1.8\times 10^{51}$\,erg for the preferred mass of $\sim 10$\msun. The inferred value is within the range of the neutrino driven explosion.

Accepted for MNRAS

References in corpus (5)

• Confined Dense Circumstellar Material Surrounding a Regular Type II Supernova: The Unique Flash-Spectroscopy Event of SN 2013fs
• SN 2006bp: Probing the Shock Breakout of a Type II-P Supernova
• Early-time spectra of supernovae and their precursor winds: the luminous blue variable/yellow hypergiant progenitor of SN 2013cu
• SN2013fs and SN2013fr: Exploring the circumstellar-material diversity in Type II supernovae
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Cited by in corpus (3)

• SN 2020jfo: A short plateau Type II supernova from a low mass progenitor
• Detecting High-Energy Neutrino Minibursts from Local Supernovae with Multiple Neutrino Observatories
• First day of type IIP supernova SN 2013fs: H$\alpha$ from preshock accelerated gas