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Bright Supernova Precursors by Outbursts from Massive Stars with Compact Object Companions by Tsuna, Daichi; Matsumoto, Tatsuya; Wu, Samantha C.; Fuller, Jim is a scholarly article available to read on EtoBox.

What is Bright Supernova Precursors by Outbursts from Massive Stars with Compact Object Companions about?

A fraction of core-collapse supernovae (SNe) with signs of interaction with a dense circumstellar matter are preceded by bright precursor emission. While the precursors are likely caused by a mass ejection before core-collapse, their mechanism to power energetic bursts, sometimes reaching $10^{48}$--$10^{49}\ {\rm erg}$ that are larger than the binding energies of red supergiant envelopes, is still under debate. Remarkably, such a huge energy-deposition should result in an almost complete envelope ejection and hence a strong sign of interaction, but the observed SNe with precursors show in fact typical properties among the interacting SNe. More generally, the observed luminosity of $10^{40-42}\,\rm erg\,s^{-1}$ is shown to be challenging for a single SN progenitor. To resolve these tensions, we propose a scenario where the progenitor is in a binary system with a compact object (CO), and an outburst from the star leads to a super-Eddington accretion onto the CO. We show that for sufficiently short separations, outbursts with moderate initial kinetic energies of $10^{46}$--$10^{47}$ erg can be energized by the accreting CO so that their radiative output can be consistent with the obs

Author

Tsuna, Daichi; Matsumoto, Tatsuya; Wu, Samantha C.; Fuller, Jim

Published

2024

Language

EN