Constraining axion-like particles dark matter in Coma Berenices with FAST
Axions and axion-like particles (ALPs) appear in many extensions of the Standard Model and are being investigated as promising dark matter (DM) candidates. One viable methodology for their detection involves the investigation of the line-like radio emissions from the dwarf spheroidal galaxy, potenti...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-05-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269324001898 |
| _version_ | 1797213471731875840 |
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| author | Wen-Qing Guo Zi-Qing Xia Xiaoyuan Huang |
| author_facet | Wen-Qing Guo Zi-Qing Xia Xiaoyuan Huang |
| author_sort | Wen-Qing Guo |
| collection | DOAJ |
| description | Axions and axion-like particles (ALPs) appear in many extensions of the Standard Model and are being investigated as promising dark matter (DM) candidates. One viable methodology for their detection involves the investigation of the line-like radio emissions from the dwarf spheroidal galaxy, potentially originating from the radiative decay of ALPs or the conversion of ALPs in the magnetic field. In this work, we constrain the properties of ALPs using the 2-hour radio observation of Coma Berenices through the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The 95% upper limits of the ALP-photon coupling are calculated for the ALP decay and conversion scenarios, respectively. Note that the sensitive ALP masses for FAST range from ∼μeV to tens of μeV, where ALP can explain the DM abundance naturally. However, our limits are weaker than those of the CAST helioscope, which can provide an independent and complementary check on the ALP non-detection for ground experiments. Furthermore, we evaluate the expected sensitivity on the ALP of FAST with its full designed bandwidth (70 MHz - 3 GHz) for 100 hours of observation time. Our results indicate that, even with the exceptional sensitivity of the FAST, it is challenging to surpass the existing experimental constraints on ALP DM using radio observation of dSphs, unless the possible enhancements of ALP signals by compact stars in dSphs are considered. |
| first_indexed | 2024-04-24T10:58:49Z |
| format | Article |
| id | doaj.art-a3e9f96f88cd46eba8fb5c12ac9c696c |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-24T10:58:49Z |
| publishDate | 2024-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-a3e9f96f88cd46eba8fb5c12ac9c696c2024-04-12T04:44:19ZengElsevierPhysics Letters B0370-26932024-05-01852138631Constraining axion-like particles dark matter in Coma Berenices with FASTWen-Qing Guo0Zi-Qing Xia1Xiaoyuan Huang2Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, 210033, China; School of Astronomy and Space Science, University of Science and Technology of China, Hefei, Anhui, 230026, ChinaKey Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, 210033, China; Corresponding author.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, 210033, China; School of Astronomy and Space Science, University of Science and Technology of China, Hefei, Anhui, 230026, China; Corresponding author at: Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, 210033, China.Axions and axion-like particles (ALPs) appear in many extensions of the Standard Model and are being investigated as promising dark matter (DM) candidates. One viable methodology for their detection involves the investigation of the line-like radio emissions from the dwarf spheroidal galaxy, potentially originating from the radiative decay of ALPs or the conversion of ALPs in the magnetic field. In this work, we constrain the properties of ALPs using the 2-hour radio observation of Coma Berenices through the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The 95% upper limits of the ALP-photon coupling are calculated for the ALP decay and conversion scenarios, respectively. Note that the sensitive ALP masses for FAST range from ∼μeV to tens of μeV, where ALP can explain the DM abundance naturally. However, our limits are weaker than those of the CAST helioscope, which can provide an independent and complementary check on the ALP non-detection for ground experiments. Furthermore, we evaluate the expected sensitivity on the ALP of FAST with its full designed bandwidth (70 MHz - 3 GHz) for 100 hours of observation time. Our results indicate that, even with the exceptional sensitivity of the FAST, it is challenging to surpass the existing experimental constraints on ALP DM using radio observation of dSphs, unless the possible enhancements of ALP signals by compact stars in dSphs are considered.http://www.sciencedirect.com/science/article/pii/S0370269324001898 |
| spellingShingle | Wen-Qing Guo Zi-Qing Xia Xiaoyuan Huang Constraining axion-like particles dark matter in Coma Berenices with FAST Physics Letters B |
| title | Constraining axion-like particles dark matter in Coma Berenices with FAST |
| title_full | Constraining axion-like particles dark matter in Coma Berenices with FAST |
| title_fullStr | Constraining axion-like particles dark matter in Coma Berenices with FAST |
| title_full_unstemmed | Constraining axion-like particles dark matter in Coma Berenices with FAST |
| title_short | Constraining axion-like particles dark matter in Coma Berenices with FAST |
| title_sort | constraining axion like particles dark matter in coma berenices with fast |
| url | http://www.sciencedirect.com/science/article/pii/S0370269324001898 |
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