Light Curves of Radio Supernovae

TL;DR

This paper reports radio light curves of recent type II supernovae, analyzing their properties to infer progenitor characteristics and mass loss rates through VLA observations and modeling.

Contribution

It provides new radio light curves for several recent type II supernovae and discusses their implications for progenitor star properties and circumstellar environments.

Findings

Radio light curves reveal diverse progenitor mass loss histories.

Modeling suggests typical shock velocities around 10,000 km/s.

Mass loss rates are estimated based on radio data and assumptions.

Abstract

We present the results from the on-going radio monitoring of recent type II supernovae (SNe), including SNe 2004et, 2004dj, 2002hh, 2001em, and 2001gd. Using the Very Large Array to monitor these supernovae, we present their radio light-curves. From these data we are able to discuss parameterizations and modeling and make predictions of the nature of the progenitors based on previous research. Derived mass loss rates assume wind-established circumstellar medium, shock velocity ~10,000 km/s, wind velocity ~10 km/s, and CSM Temperature ~10,000 K.