The FAST Galactic Plane Pulsar Snapshot survey: IV. Discovery of five fast radio bursts

TL;DR

This paper reports the discovery of five new fast radio bursts from the Galactic Plane using FAST, providing detailed parameters and polarization data, and classifying them as potential one-off events due to lack of repetition.

Contribution

The paper presents five newly discovered FRBs from the Galactic Plane with detailed polarization and parameter measurements, expanding the known FRB population and characteristics.

Findings

Five new FRBs discovered with FAST

No repeating bursts detected from these sources

Polarization and Faraday rotation measures obtained

Abstract

We report five new fast radio bursts (FRBs) discovered from the Galactic Plane Pulsar Snapshot (GPPS) survey by the Five-hundred-meter Aperture Spherical radio Telescope (FAST): FRB\,20210126, FRB\,20210208, FRB\,20210705, FRB\,20211005 and FRB\,20220306. To date, no repeating bursts from these FRB sources have been detected in the follow-up monitoring observations, leading to their classification as potential one-off events. We obtain the basic parameters for these bursts, including position, dispersion measure (DM), pulse width, spectral index, scattering time-scale, etc. The fluences and flux densities are generally lower in comparison to the values observed in one-off bursts discovered by other telescopes. Among the observed bursts, polarization data for 4 bursts were recorded during observations. Consequently, we obtain polarization profiles and Faraday rotation measures (RMs) for these bursts.