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Parkes observations for project P1034 semester 2019OCTS_02
We recently discovered two millisecond pulsars (MSPs) in the globular cluster, Omega Centauri, the first pulsar discovery in this globular cluster. The discovery of these MSPs will enable us to study the stellar population and dynamics in the core of Omega Centauri, and to probe the ionised interstellar medium in Omega Centauri. These two MSPs are ... morepotentially in extreme eclipsing systems, and are useful for us to understand the formation of such systems. More importantly, our discoveries, for the first time, allow us to carry out a deep, coherently de-dispersed, high time resolution survey of pulsars in Omega Centauri, which might lead to exciting discoveries. We propose to carry out follow-up timing observations of the new discoveries, and a new coherently de-dispersed, high time resolution survey of Omega Centauri. less
Astronomical and Space Sciences not elsewhere classified
01 Oct 2019
31 Mar 2020
Creative Commons Attribution 4.0 International Licence
Dai, Shi; Johnston, Simon; Kumamoto, Hiroki (2019): Parkes observations for project P1034 semester 2019OCTS_02. 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 Sep 2021.
Australia Telescope National Facility
P1034 - Follow-up of the first millisecond pulsar discoveries in Omega Centauri and a new coherently de-dispersed survey
Omega Centauri is a globular cluster in the constellation of Centaurus that was first identified by Edmond Halley in 1677. Located at a distance of 15,800 light-years, it is the largest globular cluster in the Milky Way at a diameter of roughly 150 light-years. It is estimated to contain approximately 10 million stars and a total mass equivalent to... more 4 million solar masses, making it the most massive globular cluster of the Milky Way. Although the density of stars is very high in Omega Centauri, no radio pulsars have been discovered so far. Recently, with the new Parkes Ultra-wideband Low Receiver, we re-observed Omega Centauri and successfully discovered two new millisecond pulsars. This discovery will enable us to understand the population and environment in the core of Omega Centauri, and we propose to carry out new observations to study these pulsars and to discover more pulsars. less