Detecting Fast Radio Bursts in the Milky Way
arXiv:2112.02233 · doi:10.1093/mnras/stab3349
Abstract
Fast Radio Bursts (FRBs) are highly energetic transient events with duration of order of microseconds to milliseconds and of unknown origin. They are known to lie at cosmological distances, through localisation to host galaxies. Recently, an FRB-like event was seen from the Milky Way magnetar SGR 1935+2154 by the CHIME and STARE2 telescopes. This is the only magnetar that has produced FRB events in our galaxy. Finding similar events in the Milky Way is of great interest to understanding FRB progenitors. Such events will be strongly affected by the turbulent interstellar medium in the Milky Way, their intrinsic energy distribution and their spatial locations within the plane of the Milky Way. We examine these effects using models for the distribution of electrons in the ISM to estimate the dispersion measure and pulse scattering of mock events, and a range of models for the spatial distribution and luminosity functions, including models motivated by the spatial distribution of the Milky Way's magnetars. We evaluate the fraction of FRB events in the Milky Way that are detectable by STARE2 for a range of ISM models, spatial distributions and burst luminosity functions. In all the models examined, only a fraction of burst events are detectable, mainly due to the scattering effects of the ISM. We find that GReX, a proposed all-sky experiment, could increase the detection rate of Milky Way FRB events by an order of magnitude, depending on assumptions made about the luminosity function and scale-height of the FRBs.
11 pages, 14 figures, accepted for publication in MNRAS
References in corpus (15)
- A bright millisecond radio burst of extragalactic origin
- A New Electron Density Model for Estimation of Pulsar and FRB Distances
- A census of baryons in the Universe from localized fast radio bursts
- A repeating fast radio burst source localised to a nearby spiral galaxy
- A fast radio burst localised to a massive galaxy
- 1E 1547.0-5408: a radio-emitting magnetar with a rotation period of 2 seconds
- A nearby repeating fast radio burst in the direction of M81
- STARE2: Detecting Fast Radio Bursts in the Milky Way
- Post-Outburst Radio Observations of the High Magnetic Field Pulsar PSR J1119-6127
- Synthesizing the intrinsic FRB population using frbpoppy
- Fast radio bursts: do repeaters and non-repeaters originate in statistically similar ensembles
- A Southern sky search for repeating Fast Radio Bursts using the Australian SKA Pathfinder
- Estimating fast transient detection pipeline efficiencies at UTMOST via real-time injection of mock FRBs
- VOEvent Standard for Fast Radio Bursts
- Observations of Radio Magnetars with the Deep Space Network