Numerical studies on core collapse supernova in self-interacting massive scalar-tensor gravity
| Autor: | Patrick Chi-Kit Cheong, Tjonnie G. F. Li |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics 010308 nuclear & particles physics Scalar (mathematics) Magnetic monopole FOS: Physical sciences Collapse (topology) General Relativity and Quantum Cosmology (gr-qc) Astrophysics Type II supernova 01 natural sciences General Relativity and Quantum Cosmology LIGO Amplitude 0103 physical sciences Tensor Astrophysics - High Energy Astrophysical Phenomena 010306 general physics Scalar field |
| Zdroj: | Physical Review D. 100 |
| ISSN: | 2470-0029 2470-0010 |
| DOI: | 10.1103/physrevd.100.024027 |
| Popis: | We investigate stellar core collapse in scalar-tensor theory with a massive self-interacting scalar field. In these theories, strong long-lived inverse chirp signals could be induced during the stellar core collapse, which provides us with several potential smoking-gun signatures that could be found using current ground-based detectors. We show that the existence of self-interaction in the potential of the scalar field can significantly suppress spontaneous scalarization and the amplitude of the monopole gravitational-wave radiation. Moreover, this suppression due to self-interaction is frequency dependent and may be discernible in LIGO/Virgo's sensitive band. Therefore, self-interaction should be considered when constraining scalar-tensor coupling parameters with gravitational-wave detections. Alternatively, if such monopole gravitational-wave signals are detected, then one may be able to infer the presence of self-interaction. 5 pages, 5 figures |
| Databáze: | OpenAIRE |
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