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Gravitational memory signal from neutrino self-interactions in supernova

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arxiv 2311.03315 v2 pith:DQVWYFZH submitted 2023-11-06 gr-qc astro-ph.HEhep-ph

Soumya Bhattacharya , Debanjan Bose , Indranil Chakraborty , Arpan Hait , Subhendra Mohanty This is my paper · ORCID
classification gr-qcastro-ph.HEhep-ph
keywords neutrinosmemoryneutrinoself-interactionssignalsupernovaarisinggravitational
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abstract

Neutrinos with large self-interactions, arising from exchange of light scalars or vectors with mass $M_\phi\simeq 10{\rm MeV}$, can play a useful role in cosmology for structure formation and solving the Hubble tension. It has been proposed that large self-interactions of neutrinos may change the observed properties of supernova like the neutrino luminosity or the duration of the neutrino burst. In this paper, we study the gravitational wave memory signal arising from supernova neutrinos. Our results reveal that memory signal for self-interacting neutrinos are weaker than free-streaming neutrinos in the high frequency range. Implications for detecting and differentiating between such signals for planned space-borne detectors, DECIGO and BBO, are also discussed.

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  1. Flyby-induced displacement: analytic solution

    gr-qc 2025-02 accept novelty 5.0 of 10

    The authors derive exact analytic solutions for gravitational wave displacement memory when the flyby profile is approximated by the hyperbolic Scarf potential, with magic amplitude values |g|=(2n+1) sqrt(n(n+1)).

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