
TL;DR
Interacting supernovae, influenced by circumstellar material, offer insights into stellar evolution, mass loss, and shock physics through diverse observational data from high-cadence surveys and long-term monitoring.
Contribution
This paper reviews the diversity, observational strategies, and scientific implications of interacting supernovae, highlighting their role in understanding massive star evolution and circumstellar environments.
Findings
High-cadence surveys capture shock breakout events.
Long-term monitoring reveals progenitor mass loss history.
Diverse CSM properties influence supernova observational features.
Abstract
Modern photometric surveys of the sky suggest that many, perhaps most supernovae (SNe) associated with the explosion of massive stars are influenced at an appreciable level by their interaction with circumstellar material (CSM). The photometric and spectroscopic diversity of these transients point to a wide range of CSM properties in terms of mass, extent, composition, and location relative to the exploding star, suggesting progenitors that cover from standard to the most extreme mass loss rates. Surveys at high-cadence catch massive stars at shock breakout and inform us on the immediate mass loss history before core collapse. In contrast, long-term monitoring of these SNe cover the transition to the birth of a SN remnant and document the progenitor mass loss that took place centuries to millennia before explosion. Interacting SNe are therefore not just extraordinary astrophysical…
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