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Parkes observations for project P991 semester 2019APRS_04
Finding radio pulsars orbiting near Sgr A* is a major goal of pulsar surveys with existing telescopes and future telescopes such as the Square Kilometer Array (SKA). The discovery of such pulsars will allow us to measure relativistic effects through timing of pulsars in tight orbits around Sgr A*, to characterise the distribution of dark matter nea... morer Sgr A*, to study the stellar population in the GC region and to probe the scattering region around Sgr A*. Although several surveys of the GC region have done, the Ultra-Wideband Low (UWL) receiver provides us a much wider frequency coverage with great sensitivity and therefore it is an excellent chance to revisit the GC region. At around 4GHz, a survey with UWL will achieve a sensitivity significantly higher than previous Parkes and Green Bank surveys, especially for pulsars with short spin periods and high dispersion measures. less
Astronomical and Space Sciences not elsewhere classified
01 Apr 2019
30 Sep 2019
Creative Commons Attribution 4.0 International Licence
Dai, Shi; Johnston, Simon; Hobbs, George; Zhang, Songbo (2019): Parkes observations for project P991 semester 2019APRS_04. v1. CSIRO. Data Collection.
All Rights (including copyright) CSIRO 2019.
Access to this collection's metadata and/or files (if any) are restricted until 30 Mar 2021.
Australia Telescope National Facility
P991 - A Pulsar Survey Towards the Galactic Centre With the Ultra-Wideband Low Receiver
In the centre of the Milky Way, we believe there is supermassive black hole, whose mass is more than a million times of the Sun. Around this supermassive black hole, we have observed very dense ionised interstellar medium, complex molecular clouds and star clusters with a large number stars. Based on these observational evidences, astronomers have ... moreargued that there are a large population of neutron stars orbiting around the supermassive black hole. If we can discover these neutron stars, we can use them as a tool to study the supermassive black hole, such as the gravitational field around it. In this proposal, we propose to use the new ultra-wideband receiver of the Parkes telescope to search for pulsars around the Galactic centre. We believe that we will be able to achieve the highest sensitivity so far with the new receiver, and therefore have a good chance to find some new pulsars. less
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