Early bolometric luminosity of SN 2013fs without photometry

TL;DR

A new spectral method estimates the early bolometric luminosity of Type IIP supernovae without photometry, using H alpha emission features to analyze spectra taken shortly after shock breakout.

Contribution

The paper introduces a novel spectral technique for reconstructing early supernova luminosity that bypasses the need for photometric data, distance, and extinction measurements.

Findings

Successfully applied to SN 2013fs with spectra 6-10 hours post-shock

Does not require photometry, distance, or extinction data

Provides early bolometric luminosity estimates from spectral features

Abstract

The novel method is proposed for the reconstruction of the early bolometric light curve for supernovae IIP based on a set of spectra of H alpha emission during the first day after the shock breakout. The method exploits an effect of the radiative acceleration of the preshock circumstellar gas that is manifested in the broad H alpha wings. The efficiency of the method is demonstrated in the case of SN 2013fs with spectra taken between 6 and 10 hours after the shock breakout. The exceptional feature of this method is that it does not require the photometry, the distance, and the extinction.