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Parkes observations for project P1068 semester 2020APRS_05
In the fast-moving world of Fast Radio Bursts (FRBs), the key question of what fraction (as high as 100%?) of FRBs emit repeat bursts remains unanswered. Of order 10 repeating FRBs are now known, and their spectro-temporal properties hint at differences with apparently non-repeating bursts - but poor statistics preclude a definitive diagnosis. FRB... more 180301 is a promising source for further study for multiple reasons: it is the first repeating FRB seen by the FAST telescope, and has the second-highest rotation measure ever seen for a FRB (after the original repeater, FRB121102). We request Parkes observations with the UWL to characterise the broadband emission properties of this FRB, with the following key goals: to constrain the repetition rate, identify any variation of pulse characteristics over time, and provide insight into the emission mechanisms. In its initial detection, FRB 180301 was poorly fit by regular Faraday rotation models, and showed significant circular polarization, which may indicate the progenitor is embedded in an extreme magneto-ionic environment with complex field structure that has not been seen before. These observations will generate a large data volume. We will use the Medusa backend in parallel with the Breakthrough Listen data recorder (BL), and will transfer data to BL immediately after observations.These data will be used by P. Kumar to prototype a FRB pipeline for the UWL, that will be made broadly available for similar studies. less
Astronomical and Space Sciences not elsewhere classified
01 Apr 2020
30 Sep 2020
Creative Commons Attribution 4.0 International Licence
Price, Danny; Deller, Adam; Shannon, Ryan; Lee, Kejia; Kumar, Pravir; Gajjar, Vishal; Siemion, Andrew (2020): Parkes observations for project P1068 semester 2020APRS_05. v1. CSIRO. Data Collection.
All Rights (including copyright) CSIRO 2020.
Access to this collection's metadata and/or files (if any) are restricted until 30 Mar 2022.
Australia Telescope National Facility
P1068 - Monitoring the repeating FRB 180301
Fast Radio Bursts, known as FRBs, are enigmatic and incredibly bright events that astronomers have detected with radio telescopes. These bursts last only a millisecond, but output as much energy as the Sun does over several months. FRBs are so bright that they can be detected from billions of light years away, which may make them excellent probes f... moreor Cosmology -- once we understand them. We do not known what kind of extreme event causes FRBs, or if they only occur in certain environments. By detecting more FRBs, and collecting more data at different frequencies, we can learn about what kind of physics is required to explain their observed properties. We propose to observe and monitor FRB 180301, an FRB that was detected with Parkes and was recently shown to give off repeat bursts. FRB 180301 exhibits some interesting structure in frequency and polarization, which is unlike most other FRBs. We will use the Parkes Ultra Wideband receiver (UWL), to search for bursts over the receiver's full operational range, from 700 MHz to 4 GHz. We will pay particular attention to the polarization properties of any detected bursts, which may give insights into the strength and complexity of the magnetic fields in the vicinity of the FRB source. less