Smoking gun signature from axion and the constraints with radio telescopes
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arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909912849711104 |
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| author | Liu, Zixuan Zhang, Jiajun |
| author_facet | Liu, Zixuan Zhang, Jiajun |
| contents | Axions are an elegant solution to the strong CP problem for particle physics and a promising dark matter candidate. They can convert into photons under a strong magnetic field, while magnetars with extreme magnetic fields are natural labs for axion detection. Radio telescopes can detect the radio emission from axion-photon conversion near magnetars. In this study, we have refined the calculation of axion-photon conversion and developed the matched filtering integration method to largely improve the signal-to-noise ratio. We validate our method using end-to-end simulation and real observational data from TMRT. A new constraint is set with only 687 seconds of observations with TMRT. Using 10 hours of observation with the high-frequency receiver in FAST or SKA, we can reach the theoretical coupling constant prediction for the axion mass range from 1$μ$eV to 100$μ$eV. We validate the possibility of axion detection with radio telescopes and avoid spectrum confusion. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_05795 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Smoking gun signature from axion and the constraints with radio telescopes Liu, Zixuan Zhang, Jiajun Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology Axions are an elegant solution to the strong CP problem for particle physics and a promising dark matter candidate. They can convert into photons under a strong magnetic field, while magnetars with extreme magnetic fields are natural labs for axion detection. Radio telescopes can detect the radio emission from axion-photon conversion near magnetars. In this study, we have refined the calculation of axion-photon conversion and developed the matched filtering integration method to largely improve the signal-to-noise ratio. We validate our method using end-to-end simulation and real observational data from TMRT. A new constraint is set with only 687 seconds of observations with TMRT. Using 10 hours of observation with the high-frequency receiver in FAST or SKA, we can reach the theoretical coupling constant prediction for the axion mass range from 1$μ$eV to 100$μ$eV. We validate the possibility of axion detection with radio telescopes and avoid spectrum confusion. |
| title | Smoking gun signature from axion and the constraints with radio telescopes |
| topic | Cosmology and Nongalactic Astrophysics High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2506.05795 |