Theoretical Modeling: an essential tool for confronting Neutron Star observations

by Dr Debarati Chatterjee (University of Normandie and CNRS, France)

Tuesday 11 Jun 2019, 16:00 → 17:00 Asia/Kolkata

A269 (DAA SEMINAR ROOM)

One of the most exciting and revolutionary scientific discoveries in recent times has been the detection of gravitational waves, opening a new window to the universe to massive cosmic objects that may not be visible in electromagnetic spectra. The detection of the neutron star merger event is particularly unique because it opened up a new era of multi messenger astronomy. With the new generation of X-ray and gamma-ray observatories (e.g. Fermi, Chandra, Astrosat) as well as the improvement of radio telescopes (e.g. VLA), there are simultaneous astrophysical observations of neutron stars, providing a wealth of information about these objects. However, a correct interpretation of multi-messenger astrophysical data from neutron stars is a very complex task, as it requires multidisciplinary information to describe its complex structure and composition, which creates uncertainties in numerical modelling leading to errors. In order to interpret correctly astrophysical observations of neutron stars, it is essential to construct consistent models, taking into account both microscopic and macroscopic aspects within the same formalism. I will describe my experience in developing the necessary tools for analytical description as well as in constructing consistent global numerical models of neutron stars relevant for confronting the abundant astrophysical data at our disposal.