First Result for Dark Matter Search by WINERED
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arXiv
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| Autores principales: | , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866910823345029120 |
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| author | Yin, Wen Bessho, Taiki Ikeda, Yuji Kobayashi, Hitomi Taniguchi, Daisuke Sameshima, Hiroaki Matsunaga, Noriyuki Otsubo, Shogo Sarugaku, Yuki Takeuchi, Tomomi Kato, Haruki Hamano, Satoshi Kawakita, Hideyo |
| author_facet | Yin, Wen Bessho, Taiki Ikeda, Yuji Kobayashi, Hitomi Taniguchi, Daisuke Sameshima, Hiroaki Matsunaga, Noriyuki Otsubo, Shogo Sarugaku, Yuki Takeuchi, Tomomi Kato, Haruki Hamano, Satoshi Kawakita, Hideyo |
| contents | The identity of dark matter has been a mystery in astronomy, cosmology, and particle theory for about a century. Bessho, Ikeda, and Yin (2022), three of the current authors, proposed using the state-of-the-art infrared spectrographs, including WINERED at $6.5$m Magellan Clay telescope and NIRSpec at James Webb Space Telescope, as efficient detectors for the indirect detection of dark matter with the mass around eV by measuring the line photons from the dark matter two body decays. Applying this concept, we have performed spectrographic observations of dwarf spheroidal galaxies (dSphs) Leo V and Tucana II using WINERED by utilizing an object-sky-object nodding observation technique for background subtraction. We present the first result from this dark matter search. Employing zero consistent flux data after the sky subtraction, we have established one of the most stringent limits to date on dark matter decaying into line photons in the mass range of $1.8-2.7\,$eV. Our data can also be applied to constrain other spectra of photons from the dSphs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_07976 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | First Result for Dark Matter Search by WINERED Yin, Wen Bessho, Taiki Ikeda, Yuji Kobayashi, Hitomi Taniguchi, Daisuke Sameshima, Hiroaki Matsunaga, Noriyuki Otsubo, Shogo Sarugaku, Yuki Takeuchi, Tomomi Kato, Haruki Hamano, Satoshi Kawakita, Hideyo Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics High Energy Physics - Phenomenology The identity of dark matter has been a mystery in astronomy, cosmology, and particle theory for about a century. Bessho, Ikeda, and Yin (2022), three of the current authors, proposed using the state-of-the-art infrared spectrographs, including WINERED at $6.5$m Magellan Clay telescope and NIRSpec at James Webb Space Telescope, as efficient detectors for the indirect detection of dark matter with the mass around eV by measuring the line photons from the dark matter two body decays. Applying this concept, we have performed spectrographic observations of dwarf spheroidal galaxies (dSphs) Leo V and Tucana II using WINERED by utilizing an object-sky-object nodding observation technique for background subtraction. We present the first result from this dark matter search. Employing zero consistent flux data after the sky subtraction, we have established one of the most stringent limits to date on dark matter decaying into line photons in the mass range of $1.8-2.7\,$eV. Our data can also be applied to constrain other spectra of photons from the dSphs. |
| title | First Result for Dark Matter Search by WINERED |
| topic | Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2402.07976 |