Abstract
We perform multidimensional core-collapse supernova (CCSN) simulations in a massive scalar-tensor theory for the first time with a realistic equation of state and multienergy neutrino radiation. Among the set of our models varying the scalar mass and the coupling strength between the scalar and gravitational fields, a particular model allows for recurrent spontaneous scalarizations (SSs) in the protoneutron star (PNS). Each SS induces the PNS collapse and subsequent bounce, from which devastating shock waves emanate and eject the PNS envelope. The explosion energy can easily exceed . This study reveals new aspects of SS as the explosion mechanism of CCSNe. We also discuss its characteristic multimessenger signals: neutrinos and gravitational waves.
- Received 20 February 2023
- Accepted 27 April 2023
DOI:https://doi.org/10.1103/PhysRevD.107.103025
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Open access publication funded by the Max Planck Society.
Published by the American Physical Society