Ryder S D, Bannister K W, Bhandari S, Deller A T, Ekers R D, Glowacki M, Gordon A C, Gourdji K, James C W, Kilpatrick C D, Lu W, Marnoch L, Moss V A, Prochaska J X, Qiu H, Sadler E M, Simha S, Sammons M W, Scott D R, Tejos N, Shannon R M
School of Mathematical and Physical Sciences, Macquarie University, Sydney, NSW 2109, Australia.
Astrophysics and Space Technologies Research Centre, Macquarie University, Sydney, NSW 2109, Australia.
Science. 2023 Oct 20;382(6668):294-299. doi: 10.1126/science.adf2678. Epub 2023 Oct 19.
Fast radio bursts (FRBs) are millisecond-duration pulses of radio emission originating from extragalactic distances. Radio dispersion is imparted on each burst by intervening plasma, mostly located in the intergalactic medium. In this work, we observe the burst FRB 20220610A and localize it to a morphologically complex host galaxy system at redshift 1.016 ± 0.002. The burst redshift and dispersion measure are consistent with passage through a substantial column of plasma in the intergalactic medium and extend the relationship between those quantities measured at lower redshift. The burst shows evidence for passage through additional turbulent magnetized plasma, potentially associated with the host galaxy. We use the burst energy of 2 × 10 erg to revise the empirical maximum energy of an FRB.
快速射电暴（FRBs）是源自河外距离的持续时间为毫秒级的射电辐射脉冲。每个暴都会因星际介质中主要存在的等离子体而产生射电色散。在这项工作中，我们观测到了暴FRB 20220610A，并将其定位到一个红移为1.016±0.002的形态复杂的宿主星系系统。该暴的红移和色散量度与穿过星际介质中大量等离子体柱的情况一致，并扩展了在较低红移下测量的这些量之间的关系。该暴显示出穿过额外的湍流磁化等离子体的迹象，这可能与宿主星系有关。我们使用2×10尔格的暴能量来修正快速射电暴的经验最大能量。
