Radio studies of novae: a current status report and highlights of new results

TL;DR

This paper reviews the current status of radio observations of novae, emphasizing how they can improve understanding of nova phenomena, including ejecta mass estimation and complex ejection processes, through recent observational and theoretical advances.

Contribution

It provides a comprehensive update on radio studies of novae, highlighting new observational results and discussing how radio data can refine models of nova explosions.

Findings

Radio observations help estimate ejecta mass more accurately.

New results reveal complex, multi-phase ejection phenomena.

Radio data shed light on dense environmental effects around novae.

Abstract

Novae, which are the sudden visual brightening triggered by runaway thermonuclear burning on the surface of an accreting white dwarf, are fairly common and bright events. Despite their astronomical significance as nearby laboratories for the study of nuclear burning and accretion phenomena, many aspects of these common stellar explosions are observationally not well-constrained and remain poorly understood. Radio observations, modeling and interpretation can potentially play a crucial role in addressing some of these puzzling issues. In this review on radio studies of novae, we focus on the possibility of testing and improving the nova models with radio observations, and present a current status report on the progress in both the observational front and theoretical developments. We specifically address the issues of accurate estimation of ejecta mass, multi-phase and complex ejection phenomena, and the effect of a dense environment around novae. With highlights of new observational results, we illustrate how radio observations can shed light on some of these long-standing puzzles.