Speaker: Vishnu Balakrishnan
Title: “New Techniques to search for Relativistic Binary Pulsars.”
Pulsars, rapidly-rotating highly-magnetised neutron stars, are fantastic natural laboratories and allow for a wide range of fundamental scientific applications. To date, over 2600 pulsars have been found, and the search to find more is constantly ongoing. Since the discovery of the first binary pulsar (Hulse & Taylor 1975), the detection of relativistic binary systems have been a primary aim of any pulsar survey. In this talk, I will discuss about a new search technique based on random and stochastic template bank that could potentially help us discover more exotic compact binaries. Additionally, I will present an overview of the latest progress from the High Time Resolution Universe South Low-Latitude (HTRU-S LowLat) survey, a highly sensitive survey taken using the 64m Parkes Radio Telescope in Australia, which promises to provide the deepest large-scale search ever for the Galactic plane region. I will also summarise the work we have done so far in collaboration with SAP SE to build a framework that will help us do real-time search analytics for future pulsar surveys.
talk’s chair: Vishnu Balakrishnan
Speaker: Weiwei Chen
Title: “Beamforming with MeerKAT”
Fast Radio Bursts is a new kind of astrophysical phenomena discovered in the recent decade. With more and more bursts discovered, their sources are still unknown because the short time scale and they mostly not repeats. An accurate localization is the key to investigate the origin of these bursts. MeerKAT telescope will be online this year for science. It’s consists of an array of 64 dishes and has baselines up to 8 km. Max Planck Institute for Radio Astronomy is manufacturing the S-band system for MeerKAT which consists of a s-band , a multibeam beamformer and binary pulsar searching backend. With the beamformer, MeerKAT is can form hundreds coherent beams in the sky in milliseconds. This will made MeerKAT a well suited facility for searching fast transients likes Fast Radio Bursts and RRAT. In my thesis, I will develop observing strategies using Beamforming with MeerKAT including beam shapes characterization, beam tiling, filling factor optimization and so on.