Searching for radio pulses from radio-quiet gamma-ray pulsars with FAST
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866916791946575872 |
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| author | Wang, S. Q. Dai, S. Wang, N. Zic, A. Hobbs, G. Li, D. Ding, R. B. Peng, L. Pan, Z. C. Zhang, S. B. |
| author_facet | Wang, S. Q. Dai, S. Wang, N. Zic, A. Hobbs, G. Li, D. Ding, R. B. Peng, L. Pan, Z. C. Zhang, S. B. |
| contents | We present periodicity and single-pulse searches at 1250 MHz for 22 radio-quiet gamma-ray pulsars, conducted using the Five-hundred-meter Aperture Spherical Radio Telescope (FAST). For PSR J1813$-$1246, we successfully detected pulsed signals with a spin period of 48.08 ms and a dispersion measure of 209.85 ${\rm pc cm^{-3}}$, consistent with the spin period measured at gamma-ray wavelengths. The estimated flux density is approximately 9 $μ$Jy. For the remaining 21 sources, no radio emission was detected, with flux density upper limits of several $ μ$Jy. The capability to detect pulsars with such low flux densities provides the opportunity to determine if and how these faint sources differ from much radio-brighter pulsars. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_10565 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Searching for radio pulses from radio-quiet gamma-ray pulsars with FAST Wang, S. Q. Dai, S. Wang, N. Zic, A. Hobbs, G. Li, D. Ding, R. B. Peng, L. Pan, Z. C. Zhang, S. B. High Energy Astrophysical Phenomena We present periodicity and single-pulse searches at 1250 MHz for 22 radio-quiet gamma-ray pulsars, conducted using the Five-hundred-meter Aperture Spherical Radio Telescope (FAST). For PSR J1813$-$1246, we successfully detected pulsed signals with a spin period of 48.08 ms and a dispersion measure of 209.85 ${\rm pc cm^{-3}}$, consistent with the spin period measured at gamma-ray wavelengths. The estimated flux density is approximately 9 $μ$Jy. For the remaining 21 sources, no radio emission was detected, with flux density upper limits of several $ μ$Jy. The capability to detect pulsars with such low flux densities provides the opportunity to determine if and how these faint sources differ from much radio-brighter pulsars. |
| title | Searching for radio pulses from radio-quiet gamma-ray pulsars with FAST |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2506.10565 |