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Parkes observations for project P1039 semester 2020APRS_04
Rotating Radio Transients (RRATs) are a group of sporadically emitting neutron stars. Their erratic single-pulse emission makes them hard to detect and consequently, our knowledge of even the basic parameters of the population is lacking. Here we propose an ambitious project to systematically review the spectral and rotational parameters of a large... more fraction (29) of the known RRAT population in the southern hemisphere, roughly 90 per cent of those that are well localised. Our project plays to the strengths of the newly commissioned Parkes UWL receiver and backend system, its wide 3.3-GHz instantaneous frequency coverage, excellent sensitivity and ability to coherently remove the effects of dispersion in the interstellar medium. The data will enable us to measure their absolute calibrated flux densities, polarimetric profiles, spectral behaviour, detection rates, inter-pulse waiting times and rotational parameters. Our measurements are crucial to understanding whether the RRATs form a distinct class from the ordinary radio pulsars and will inform observations and RRAT yields of surveys at upcoming facilities. Additionally, they will elucidate any potential relationship with pulses from repeating Fast Radio Bursts. less
Astronomical and Space Sciences not elsewhere classified
01 Apr 2020
30 Sep 2020
Creative Commons Attribution 4.0 International Licence
Jankowski, Fabian; Stappers, Benjamin; Keane, Evan; Caleb, Manisha (2020): Parkes observations for project P1039 semester 2020APRS_04. 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
P1039 - A Wideband Census of Southern Rotating Radio Transients
In this project, we study Rotating Radio Transients (RRATs), a special group of pulsars, neutron stars of about city size but more massive than our Sun, that are rapidly rotating and highly magnetized. Unlike other pulsars, of which we know roughly 2700, the RRATs are easiest (or only) detected by their bright and sporadically emitted individual ra... moredio pulses. First discovered in 2006, about 110 RRATs are currently known. Here we observe 29 of them, nearly all of those that have well-determined positions in the sky, to understand whether they form a separate evolutionary class in the zoo of neutron stars. This is important to relate them to other groups of neutron stars and to elucidate neutron star evolution as a whole. Our measurements further focus on understanding how they emit radio waves, how many of these sources will be detectable in future surveys at other telescopes and how many there are in our Galaxy. We also investigate whether and how the RRAT pulses are perhaps related to the extragalactic millisecond-duration bursts known as Fast Radio Bursts. less