Astrophysics Seminar by Prajwal Voraganti Padmanabh

Astrophysics Seminar

Searching for pulsars with the MeerKAT telescope

Speaker: Prajwal Voraganti Padmanabh (Max Planck Institute for Gravitational Physics, Hannover)

तिथि और समय
कार्यक्रम का स्थान
Library Block Lecture Hall

अमूर्त

Although we currently know more than 3000 different pulsars across the Galaxy, there are a wide range of problems in fundamental physics and astrophysics that would benefit from their continued searches. In recent years, the MeerKAT radio telescope has been at the forefront by discovering nearly 200 such sources. In the first half of my talk, I will focus on Transients and Pulsars with MeerKAT (TRAPUM) and MPIfR-MeerKAT Galactic Plane Survey (MMGPS) which are targeted and blind sky surveys respectively and have massively contributed to the pulsar search effort. I will discuss technical aspects of instrumentation, algorithms and processing strategy. I will also elaborate on scientific highlights of specific discoveries including double neutron star systems and pulsars with gamma ray counterparts. 

In the second half of my talk, I will talk about Einstein@Home, a volunteer distributed computing project which was initially designed to search for gravitational waves from neutron stars and has now been adapted to find radio and gamma ray pulsars. I will delve into using Einstein@Home to search for compact radio binary pulsars in globular clusters with MeerKAT data. The old stellar population and dense environments of globular clusters promote dynamical interactions and the formation of a wide range of exotic binary pulsar systems. Finding such compact binaries would serve as excellent probes for testing gravity in the strong field regime as well as binary evolution.