Image-domain Pulsar Searching

Conventional FFT-based periodicity searches are often limited by scattering from the interstellar medium that hinders pulsar detection in dense, turbulent environments such as the Galactic Center and star-forming regions in the Galactic plane. In addition, orbital motion can lower the sensitivity of an FFT-based search, thereby, selecting against pulsars in tight binaries. An interferometric finding survey, on the other hand, overcomes these shortcomings and is limited only by its point source sensitivity. Furthermore, interferometers are more robust to radio frequency interference (RFI) than single dishes. Hence, it is likely that an interferometric "finding survey + follow-up" approach will reveal key populations of neutron stars, accreting objects and other exotic transients that may be missed to RFI in traditional searches.

A panoramic view of the Karl G. Jansky Very Large Array.

The Very Large Array Sky Survey (VLASS) is a dedicated project to scan the entire ~ 34,000 sq. deg. of sky visible to the VLA three times in seven years. My research involves the identification of promising transient candidates in VLASS images, and their subsequent follow-up with single dish telescopes to detect bursts and periodic pulse trains.

Stay tuned for updates!