Finding the positions of RRATs

Details Finding the positions of RRATs Finding the positions of RRATs

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007atnf.prop..712k&link_type=abstract

ATNF proposal V192, Semester: April, 2007

Other

Galactic, Lba

Scientific paper

This proposal asks for the second epoch of our experiment to determine accurate positions for those Rotating RAdio Transients (RRATs) for which we do not have a timing solution yet. RRATS are characterised by radio bursts of a total duration of 0.1-1s per day and average intervals between bursts ranging from 4 minutes to 3 hours. For the three sources with the highest bursting rates, we can use radio pulsar timing techniques to measure positions, period derivatives and infer characteristic ages and surface dipole magnetic fields. For the other sources, however, it is extremely difficult to obtain timing solutions without prior knowledge of the accurate RRAT position. In order to enable the measurement of a RRATs spin-down and the subsequent determination of the age and magnetic field, we would like to obtain precise positions in a 2-station experiment for the four RRATs with large periods (ie. between 4 and 7 s). The determined positions will enable follow-up observations at X-ray and optical wavelengths to confirm or reject the nature of RRATs as rotating neutron stars and their relationship to magnetars.

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