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Parkes observations for project P970 semester 2018APRS_17
During the past 6 years, we at Parkes and collaborators at other radio telescopes have been remarkably successful at discovering millisecond pulsars (MSPs) associated with unidentified Fermi-LAT gamma-ray sources. Based on lessons learned, we here propose to carry out targeted searches with the new Ultra-wideband Low (UWL) receiver that will be ins... moretalled next semester. The ultra-wide frequency coverage will enable us to detect MSPs with steep spectrum and avoid difficulties caused by interstellar scintillation and dispersive and scattering smearing. We propose to revisit highly ranked pulsar candidates that remain unidentified. Such a pilot survey will help us designing future searches of the coming 4FGL gamma-ray source catalog using the UWL. The overall time request is 23 hours on source, or 26 hours including overheads. less
Astronomical and Space Sciences not elsewhere classified
01 Oct 2018
30 Sep 2019
Creative Commons Attribution 4.0 International Licence
Dai, Shi; Johnston, Simon; Camilo, Fernando; Kerr, Matthew (2018): Parkes observations for project P970 semester 2018APRS_17. v1. CSIRO. Data Collection.
All Rights (including copyright) CSIRO 2018.
The metadata and files (if any) are available to the public.
Australia Telescope National Facility
P970 - Searching for millisecond pulsars towards unidentified Fermi sources using the Ultra-wideband receiver
Neutron stars contain more mass than the Sun collapsed into the size of a city. Many of these neutron stars rotate hundreds of times per second and emit beams of radio waves that we can detect on Earth, in lighthouse-like fashion. While the radio pulses enable us to detect many of these pulsars, the energy they carry is puny.
Some pulsars also emi... moret gamma rays, the most energetic photons in the electromagnetic spectrum. Studying the combined gamma-ray and radio emission from a large sample of pulsars helps us to understand how these mysterious and extreme stars work, and also gives us a clearer picture of their population in our Milky Way Galaxy than is possible simply from radio surveys. In this project, we use the Parkes dish to search for radio pulsations from the locations of gamma ray sources detected with the Fermi satellite. So far the origin of these gamma rays is unknown, but there is a good chance that they arise from pulsars spinning up to 700 times per second. less
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