Multimessenger Constraints on Radiatively Decaying Axions from GW170817
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| _version_ | 1866929268187987968 |
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| author | Diamond, Melissa Fiorillo, Damiano F. G. Marques-Tavares, Gustavo Tamborra, Irene Vitagliano, Edoardo |
| author_facet | Diamond, Melissa Fiorillo, Damiano F. G. Marques-Tavares, Gustavo Tamborra, Irene Vitagliano, Edoardo |
| contents | The metastable hypermassive neutron star produced in the coalescence of two neutron stars can copiously produce axions that radiatively decay into $\mathcal{O}(100)$~MeV photons. These photons can form a fireball with characteristic temperature smaller than $1\rm\, MeV$. By relying on X-ray observations of GW170817/GRB 170817A with CALET CGBM, Konus-Wind, and Insight-HXMT/HE, we present new bounds on the axion-photon coupling for axion masses in the range $1$-$400\,\rm MeV$. We exclude couplings down to $5\times 10^{-11}\,\rm GeV^{-1}$, complementing and surpassing existing constraints. Our approach can be extended to any feebly-interacting particle decaying into photons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_10327 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Multimessenger Constraints on Radiatively Decaying Axions from GW170817 Diamond, Melissa Fiorillo, Damiano F. G. Marques-Tavares, Gustavo Tamborra, Irene Vitagliano, Edoardo High Energy Physics - Phenomenology High Energy Astrophysical Phenomena The metastable hypermassive neutron star produced in the coalescence of two neutron stars can copiously produce axions that radiatively decay into $\mathcal{O}(100)$~MeV photons. These photons can form a fireball with characteristic temperature smaller than $1\rm\, MeV$. By relying on X-ray observations of GW170817/GRB 170817A with CALET CGBM, Konus-Wind, and Insight-HXMT/HE, we present new bounds on the axion-photon coupling for axion masses in the range $1$-$400\,\rm MeV$. We exclude couplings down to $5\times 10^{-11}\,\rm GeV^{-1}$, complementing and surpassing existing constraints. Our approach can be extended to any feebly-interacting particle decaying into photons. |
| title | Multimessenger Constraints on Radiatively Decaying Axions from GW170817 |
| topic | High Energy Physics - Phenomenology High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2305.10327 |