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Parkes observations for project P1013 semester 2019APRS_05
The paucity of known intermittent pulsars makes individual studies valuable from the perspective of understanding how these pulsars emit and how that emission is changing in time and as a function of frequency. The inherent difficulty in detecting these objects implies that their small population may well simply be a sampling bias, thus studying in... moredividual examples in details is fundamentally important in developing a complete understanding of the Galactic population. The Ultra-Wide-Band receiver and the MEDUSA backend provide unprecedented frequency coverage and will allow us to study the emission of the intermittent pulsar J1107-5907 in great detail. In particular, we will focus on the spectral characteristics of the emission, the frequency dependence of emission rates and the time scales on which the emission state switching occurs. By constraining the intermittency time scales we will be able to comment on model predictions, while the spectral index analysis will provide insights into the emission mechanism itself. less
Astronomical and Space Sciences not elsewhere classified
01 Apr 2019
30 Sep 2019
Creative Commons Attribution 4.0 International Licence
Meyers, Bradley; Johnston, Simon; Hobbs, George; Bhat, Ramesh; Shannon, Ryan; Wang, Jingbo; Dai, Shi; Tremblay, Steven (2019): Parkes observations for project P1013 semester 2019APRS_05. 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
P1013 - An ultra-wide-band study of the intermittent pulsar J1107-5907
Astronomers still do not fully understand how pulsars shine at radio wavelengths. On top of that, there are some special pulsars that don't shine continuously, and are instead mostly "off". One particular subclass of these objects are called intermittent pulsars, and they exhibit some of the most extreme examples of switching between "off" and "on"... more emission states. Using the new groundbreaking receiver technology available on the 64-m Parkes radio telescope, we can study some of these intermittent pulsars to try and figure out what's going on, and especially look into whether the emission characteristics of these pulsars change systematically with the observing wavelength. This kind of study helps astronomers and physicists by providing clues about the physical processes creating the pulsar radiation, which helps us to understand what is happening when they change the way they emit. less
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