2024/04/25 by Jixuan Li, Li, Jixuan, Yang Gao +5
Physics and Astronomy · #Astronomy and Astrophysical Research #Cosmology and Gravitation Theories #FOS: Physical sciences #Gamma-ray bursts and supernovae #High Energy Astrophysical Phenomena (astro-ph.HE) #Solar and Stellar Astrophysics (astro-ph.SR)
paper · pdf · doi:10.48550/arxiv.2404.16669
openalex publication_date 2024/04/25 · openalex created_date 2024/04/27 · openalex updated_date 2026/07/28
A firm establishment of the presence or the lack of periodicity in repeating Fast Radio Bursts (FRBs) is crucial for determining their origins. Here we compile 1145 radio bursts of FRB 20121102A with fluence larger than 0.15 Jy ms from observations using the Five-hundredmeter Aperture Spherical radio Telescope, Arecibo Observatory, Green Bank Telescope, Effelsberg Telescope, MeerKAT Telescope, Lovell Telescope, Deep Space Network 70 m radio telescopes, Very Large Array, and the Westerbork Synthesis Radio Telescope spanning the time interval of MJD 57175-58776. A quasi-period of 157.1-4.8+5.2 day and a candidate quasi-period of 4.605-0.010+0.003 day are found through the phase-folding probability binomial analysis. The former is consistent with previous findings and the latter is new. The 4.605 day periodicity is more obvious in high-energy bursts with fluence larger than 1038 erg. The presence of these (candidate) quasi-periods, together with the corresponding width of burst accumulation in the phase space, are consistent with the bursts' originating from a binary degenerate star system with a close-by planet around the primary neutron star.