Precursors of Supernovae from Mass Eruption: Prospects for Early Warning of Nearby Core-collapse Supernovae
Abstract
Recent observations of a large fraction of Type II supernovae (SNe) show traces of dense circumstellar medium (CSM) very close to the progenitor star. If this CSM is created by eruptive mass loss several months before core collapse, the eruption itself may be visible as a precursor, helpful as an early warning of a near-future SN. Using radiation hydrodynamical simulations based on the open-source code CHIPS, we theoretically model the emission from the mass eruption of a red supergiant star. We find that for a modest mass eruption the luminosity is typically on the order of 1039 erg s-1, can last as long as hundreds of days until the star explodes, and is mainly bright in the infrared (from -9 to -11 mag around peak). We discuss observational strategies to find these signatures from Galactic and local Type II SNe.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- March 2023
- DOI:
- 10.3847/1538-4357/acbbc6
- arXiv:
- arXiv:2208.08256
- Bibcode:
- 2023ApJ...945..104T
- Keywords:
-
- Core-collapse supernovae;
- Type II supernovae;
- Transient sources;
- Circumstellar matter;
- 304;
- 1731;
- 1851;
- 241;
- Astrophysics - High Energy Astrophysical Phenomena;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 15 pages (main text 10p), 9 figures. Expanded parameter study in Appendix, conclusions unchanged. Accepted by ApJ