Repeating fast radio burst 20201124A originates from a magnetar/Be star binary.

ABSTRACT: Fast radio bursts (FRBs) are cosmic sources emitting millisecond-duration radio bursts. Although several hundreds FRBs have been discovered, their physical nature and central engine remain unclear. The variations of Faraday rotation measure and dispersion measure, due to local environment, are crucial clues to understanding their physical nature. The recent observations on the rotation measure of FRB 20201124A show a significant variation on a day time scale. Intriguingly, the oscillation of rotation measure supports that the local contribution can change sign, which indicates the magnetic field reversal along the line of sight. Here we present a physical model that explains observed characteristics of FRB 20201124A and proposes that repeating signal comes from a binary system containing a

SUBMITTER: Wang FY 

PROVIDER: S-EPMC9492772 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature