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Parkes observations for project P938 semester 2016OCTS_BPSR_12
We propose a targeted, 357-hr search of two nearby galaxies with high star-formation rates (SFRs) for fast radio bursts (FRBs). The primary aim of this carefully designed experiment is to test the hypothesis that FRBs are correlated with SFR, and originate in the nearby Universe at typical distances of ~100 Mpc. This hypothesis is supported by lead... moreing models for FRBs that invoke extreme forms of young neutron-star emission, and by arguments based on signatures of FRB propagation. If the hypothesis is true, we expect ~20 FRB detections in our observations. In the case of a null result, we will show that FRBs are highly likely to originate at distances beyond ~175 Mpc. Our observations will also allow for the most sensitive search to date (by a factor of 30) for supergiant pulses from extragalactic analogues of the Crab pulsar. By using the 20cm Multibeam receiver, with the central beam pointed at the galaxies of interest, we will additionally perform a standard FRB search in all beams with an expected yield of one serendipitous event. Although we have no guarantee of a higher FRB detection rate than a truly blind survey, our experimental design ensures that we will finish with substantially greater insight into the FRB population. less
Astronomical and Space Sciences not elsewhere classified
01 Oct 2016
31 Mar 2017
interstellar medium of other galaxies
star formation (extragalactic)
Creative Commons Attribution 4.0 International Licence
Ravi, Vikram; Kulkarni, S. R.; Shannon, Ryan (2017): Parkes observations for project P938 semester 2016OCTS_BPSR_12. v1. CSIRO. Data Collection.
All Rights (including copyright) CSIRO 2017.
The metadata and files (if any) are available to the public.
Australia Telescope National Facility
P938 - The blind leading the blind: setting the FRB distance scale
Fast radio bursts from well beyond our Milky Way galaxy have recently been discovered using the Parkes telescope. These bursts have been seen around the world, prompting a flurry of activity among astronomers eager to uncover the origins of these enigmatic deep-space messengers. The observations that we propose will test a possible hypothesis for w... morehere the bursts come from: that is, that they are associated with the few thousand year-old remnants of massive stellar explosions (supernovae) in nearby galaxies. We will observe two galaxies that are rapidly forming stars (and hence often host supernovae) in the hope that we detect fast radio bursts. If no bursts are detected, we will have shown that they come from well beyond the nearby Universe, and likely represent events that haven't even crossed our imagination. less
S. R. Kulkarni
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