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Parkes observations for project P971 semester 2020APRS_03
We propose timing observations of the relativistic pulsar - white-dwarf binary PSR J1141-6545. This unique system offers access to a wide range of physics, from relativistic phenomena through pulsar emission cone studies, to the structure and distribution of interstellar plasma along our line-of-sight. The recently installed Parkes Ultra Wide Band ... moreLow Frequency (UWL) receiver has opened up the possibility of performing first-ever studies of its orbital dynamics at high temporal resolution and study of the effects of the intra-binary medium on the dispersion and polarisation of the pulse profile. Our analysis of data obtained to date suggests that the pulsar would precess away from our line-of-sight in the next 3-5 years. Hence, regular observations are crucial to maximizing its science outcome less
Astronomical and Space Sciences not elsewhere classified
01 Apr 2020
30 Sep 2020
Creative Commons Attribution 4.0 International Licence
Venkatraman Krishnan, Vivek; Bailes, Matthew; Bhat, Ramesh; van Straten, Willem; Keane, Evan; Flynn, Chris; Reardon, Daniel John (2020): Parkes observations for project P971 semester 2020APRS_03. 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
P971 - Orbital dynamics and the intra-binary medium of PSR J1141-6545
Einstein's General Theory of relativity has passed all tests so far with flying colors. But most of the tests near the solar system where the effects of gravity are quite weak. Dense objects like neutron stars or black holes curve the space-time in their vicinity to much higher magnitudes. If these objects are in binary systems, such curvature affe... morects the orbital motion. J1141-6545 is a distinctive laboratory where one object of the binary system is a neutron star and the other is a white-dwarf star. Observing this system sheds light on how the uneven space-time curvature of the system affects our understanding of gravity. less
Vivek Venkatraman Krishnan
Willem van Straten
Daniel John Reardon