Detection of a bright burst from the repeating fast radio burst 20201124A at 2 GHz

• DOI: 10.1093/pasj/psac101
• Publication Date: 2023-01-11T17:59:12Z
• Authors: Sota Ikebe; Kazuhiro Takefuji; Toshio Terasawa; Sujin Eie; Takuya Akahori; Yasuhiro Murata; Tetsuya Hashimoto; Shota Kisaka; Mareki Honma; Shintaro Yoshiura; Syunsaku Suzuki; Tomoaki Oyama; Mamoru Sekido; Kotaro Niinuma; Hiroshi Takeuchi; Yoshinori Yonekura; Teruaki Enoto
• Keywords: Fast radio burst; Spectral index

We present a detection of bright burst from FRB 20201124A, which is one the most active repeating FRBs, based on S-band observations with 64-m radio telescope at Usuda Deep Space Center/JAXA. This first observed by using Japanese facility. Our 2 GHz in February 2022 highest frequency for this and fluence $>$ 189 Jy ms brightest bursts source. place an upper limit spectral index $\alpha$ = -2.14 S band non-detection X same time. compare event rate detected ones previous research, suggest that power-law luminosity function might be broken lower fluence, fluences FRBs distribute up to over against frequency. In addition, we show energy density work was comparable population one-off FRBs. propose can as only their could so some intrinsically have been classified