Parkes observations for project P1345 semester 2025APRS_10

Full description

This proposal aims to constrain burst rates and spin down properties of a sample of new Rotating Radio Transients (RRATs) discovered with the ASKAP CRAFT Coherent upgrade (CRACO) system. Over the past 12-months of commissioning, CRACO discovered and precisely localised 15 new RRATs, characterised by their sporadic pulses with dispersion measures (DM) consistent with Galactic sources. We request 22.5h of Parkes time split into three 30min observations spanning 6-months for each target. This can help constrain periods and potentially phase-coherent timing solutions given that we already have arcsec-precision interferometric localisations. Our main science goals are: 1) to measure their burst rates, periods, and spin-down properties; 2) to assess their nulling fraction and intermittency; 3) to measure their polarimetric properties and constrain their emission mechanism; 4) to determine if the CRACO RRATs are fundamentally different from the known RRAT population. Some of these goals can be answered even with the detection of a limited number of pulses.