Detection of a bright burst from the repeating FRB 20201124A at 2 GHz
arXiv:2211.13835 · doi:10.1093/pasj/psac101
Abstract
We present a detection of a bright burst from FRB 20201124A, which is one of the most active repeating FRBs, based on S-band observations with the 64-m radio telescope at the Usuda Deep Space Center/JAXA. This is the first FRB observed by using a Japanese facility. Our detection at 2 GHz in February 2022 is the highest frequency for this FRB and the fluence of 189 Jy ms is one of the brightest bursts from this FRB source. We place an upper limit on the spectral index = -2.14 from the detection of the S band and non-detection of the X band at the same time. We compare an event rate of the detected burst with ones of the previous research, and suggest that the power-law of the luminosity function might be broken at lower fluence, and the fluences of bright FRBs distribute up to over 2 GHz with the power-law against frequency. In addition, we show the energy density of the burst detected in this work was comparable to the bright population of one-off FRBs. We propose that repeating FRBs can be as bright as one-off FRBs, and only their brightest bursts could be detected so some of repeating FRBs intrinsically might have been classified as one-off FRBs.
8 pages, 5 figures, accepted for publication in Publications of the Astronomical Society of Japan (PASJ)
References in corpus (19)
- TEMPO2, a new pulsar timing package. I: Overview
- Fast radio bursts as synchrotron maser emission from decelerating relativistic blast waves
- Fast Radio Burst Morphology in the First CHIME/FRB Catalog
- A fast radio burst source at a complex magnetised site in a barred galaxy
- LOFAR Detection of 110-188 MHz Emission and Frequency-Dependent Activity from FRB 20180916B
- The prevalence of repeating fast radio bursts
- Detection of Repeating FRB 180916.J0158+65 Down to Frequencies of 300 MHz
- A sudden period of high activity from repeating Fast Radio Burst 20201124A
- Chronicling the Host Galaxy Properties of the Remarkable Repeating FRB 20201124A
- Polarization properties of FRB 20201124A from detections with the 100-m Effelsberg Radio Telescope
- No redshift evolution of non-repeating fast radio-burst rates
- Uncloaking hidden repeating fast radio bursts with unsupervised machine learning
- Luminosity-duration relations and luminosity functions of repeating and non-repeating fast radio bursts
- Synthesizing the repeating FRB population using frbpoppy
- Scintillation timescale measurement of the highly active FRB20201124A
- Enhanced X-ray Emission Coinciding with Giant Radio Pulses from the Crab Pulsar
- One-off and Repeating Fast Radio Bursts: A Statistical Analysis
- Multi-frequency radio observations of the radio-loud magnetar XTE J1810-197
- On the relation between duration and energy of non-repeating fast radio bursts: census with the CHIME data