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Parkes observations for project P1041 semester 2020APRS_01
We recently discovered five millisecond pulsars (MSPs) in the globular cluster Omega Centauri. This is the first pulsar discovery in this globular cluster. Four of these pulsars are isolated with spin periods of 4.1, 4.2, 4.6 and 6.8ms. The fifth has a spin period of 4.8ms and is in an eclipsing binary system with an orbital period of 2.1 hours. We... more propose to carry out a timing campaign of these new pulsars in order to study the dynamics in the core of Omega Centauri, to reveal the origin of Gamma-ray emission from the core, and to probe the ionised interstellar medium in Omega Centauri. Our proposed observations will also enable us to carry out deeper searches of pulsars in the cluster. less
Astronomical and Space Sciences not elsewhere classified
01 Apr 2020
30 Sep 2020
Creative Commons Attribution 4.0 International Licence
Dai, Shi; Possenti, Andrea; Johnston, Simon; Camilo, Fernando; Kerr, Matthew; Kumamoto, Hiroki (2020): Parkes observations for project P1041 semester 2020APRS_01. 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
P1041 - Timing of millisecond pulsars in Globular Cluster Omega Centauri
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. Recently, with the new Parkes Ultra-wideband Low Receiver, we observed Omega Centauri and successfully discovered five new millisecond pulsars, fast spinning neutron stars. This discovery will enable us to understand the dynamics, stellar population and environment in the core of Omega Centauri. We propose to carry out regular monitoring of these new pulsars and to discover more pulsars. less
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