The Low Frequency Perspective on Fast Radio Bursts
Journal
Date Issued
2021
Author(s)
Abstract
Fast radio bursts (FRBs) represent one of the most exciting astrophysical
discoveries of the recent past. The study of their low-frequency emission,
which was only effectively picked up about ten years after their discovery, has
helped shape the field thanks to some of the most important detections to date.
Observations between 400 and 800 MHz, carried out by the CHIME/FRB telescope,
in particular, have led to the detection of ~500 FRBs in little more than 1
year and, among them, ~20 repeating sources. Detections at low frequencies have
uncovered a nearby population that we can study in detail via continuous
monitoring and targeted campaigns. The latest, most important discoveries
include: periodicity, both at the days level in repeaters and at the
millisecond level in apparently non-repeating sources; the detection of an
FRB-like burst from a galactic magnetar; and the localisation of an FRB inside
a globular cluster in a nearby galaxy. The systematic study of the population
at low frequencies is important for the characterisation of the environment
surrounding the FRBs and, at a global level, to understand the environment of
the local universe. This review is intended to give an overview of the efforts
leading to the current rich variety of low-frequency studies and to put into a
common context the results achieved in order to trace a possible roadmap for
future progress in the field.
Volume
8
Issue
1
Start page
9
Issn Identifier
2218-1997
Rights
open.access
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