The flat tail in the burst energy distribution of FRB 20240114A
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866917976651857920 |
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| author | Huang, Yu-Xiang Zhang, Jun-Shuo Xu, Heng Hao, Long-Fei Lee, Ke-Jia Zhang, Yong-Kun Wang, Tian-Cong Cao, Shuo Zhou, De-Jiang Xu, Jiang-Wei Li, Zhi-Xuan Xu, Yong-Hua Wang, Bo-Jun Jiang, Jin-Chen Guo, Yan-Jun Xue, Zi-Han Shen, Fa-Xin Wang, Min Men, Yun-Peng Chen, Wen Wu, Qin Wang, Fayin |
| author_facet | Huang, Yu-Xiang Zhang, Jun-Shuo Xu, Heng Hao, Long-Fei Lee, Ke-Jia Zhang, Yong-Kun Wang, Tian-Cong Cao, Shuo Zhou, De-Jiang Xu, Jiang-Wei Li, Zhi-Xuan Xu, Yong-Hua Wang, Bo-Jun Jiang, Jin-Chen Guo, Yan-Jun Xue, Zi-Han Shen, Fa-Xin Wang, Min Men, Yun-Peng Chen, Wen Wu, Qin Wang, Fayin |
| contents | Fast Radio Bursts (FRBs) are enigmatic millisecond-duration radio transients of extra-galactic origin, whose underlying mechanisms and progenitors remain poorly understood. FRBs are broadly classified into two categories: repeating FRBs, which emit multiple bursts over time, and one-off FRBs, which are detected as single events. A central question in FRB research is whether these two classes share a common origin. In this study, we present observations of FRB 20240114A, a repeating FRB that entered a hyperactive phase in January 2024. We conducted a 318-hour monitoring campaign using the Kunming 40-Meter Radio Telescope (KM40M) in the S-band (2.187-2.311 GHz), during which we detected eight radio bursts. We analyzed their properties, including dispersion measure (DM), bandwidth, pulse width, flux, fluence, and energy. Additionally, we searched for counterparts in overlapping data from the Five-hundred-meter Aperture Spherical Telescope (FAST) in the L-band (1.0-1.5 GHz). While no bursts were temporally aligned between the two telescopes, we identified one FAST burst that arrived approximately 6 ms after one of the KM40M bursts. The absence of FAST counterparts for the KM40M bursts suggests that individual bursts from FRB 20240114A are likely narrow-band, with fractional bandwidths less than 10%. By comparing the cumulative event rates from KM40M and FAST observations, we found that the two measurements are compatible, indicating a possible flattening of the event rate at higher energies. This feature aligns with observations of one-off FRBs, supporting the hypothesis that repeating and one-off FRBs may share a common origin. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_03569 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The flat tail in the burst energy distribution of FRB 20240114A Huang, Yu-Xiang Zhang, Jun-Shuo Xu, Heng Hao, Long-Fei Lee, Ke-Jia Zhang, Yong-Kun Wang, Tian-Cong Cao, Shuo Zhou, De-Jiang Xu, Jiang-Wei Li, Zhi-Xuan Xu, Yong-Hua Wang, Bo-Jun Jiang, Jin-Chen Guo, Yan-Jun Xue, Zi-Han Shen, Fa-Xin Wang, Min Men, Yun-Peng Chen, Wen Wu, Qin Wang, Fayin High Energy Astrophysical Phenomena Fast Radio Bursts (FRBs) are enigmatic millisecond-duration radio transients of extra-galactic origin, whose underlying mechanisms and progenitors remain poorly understood. FRBs are broadly classified into two categories: repeating FRBs, which emit multiple bursts over time, and one-off FRBs, which are detected as single events. A central question in FRB research is whether these two classes share a common origin. In this study, we present observations of FRB 20240114A, a repeating FRB that entered a hyperactive phase in January 2024. We conducted a 318-hour monitoring campaign using the Kunming 40-Meter Radio Telescope (KM40M) in the S-band (2.187-2.311 GHz), during which we detected eight radio bursts. We analyzed their properties, including dispersion measure (DM), bandwidth, pulse width, flux, fluence, and energy. Additionally, we searched for counterparts in overlapping data from the Five-hundred-meter Aperture Spherical Telescope (FAST) in the L-band (1.0-1.5 GHz). While no bursts were temporally aligned between the two telescopes, we identified one FAST burst that arrived approximately 6 ms after one of the KM40M bursts. The absence of FAST counterparts for the KM40M bursts suggests that individual bursts from FRB 20240114A are likely narrow-band, with fractional bandwidths less than 10%. By comparing the cumulative event rates from KM40M and FAST observations, we found that the two measurements are compatible, indicating a possible flattening of the event rate at higher energies. This feature aligns with observations of one-off FRBs, supporting the hypothesis that repeating and one-off FRBs may share a common origin. |
| title | The flat tail in the burst energy distribution of FRB 20240114A |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2504.03569 |