Research Works

Gravitational waves (GWs) emitted from astrophysical sources can get lensed on their way to Earth, similar to electromagnetic waves. Lenses could be Galaxy, Galaxy Clusters, Dark matter halos, etc. Strong Lensing leads to Multiple Images, Time delays between images (hours/weeks/months), and Magnification. I am performing astrophysical simulations to address few questions related to lensing phenomena.

I am exploring the potential markers that could be detected in gravitational wave signals originating from isolated neutron stars and neutron star binaries. These markers may likely stem from intense gravitational forces, magnetic fields, and the dense matter within neutron stars. Potentially get triggered in the late-inspiral stage. Identifying these signatures could provide valuable insights into various astrophysical processes and phenomena associated with neutron stars.

The existence of quark stars is an open problem in astrophysics. In the dense cores of a neutron star, the nuclear matter is prone to undergo conversion to quark matter (phase-transition), which can result in the formation of quark/hybrid stars.  Such conversion is likely to happen via a two step process in neutron star at birth or in their lifetime.  I have modeled the gradual and catastrophic phase transition in neutron star and obtained it's observational signatures. The PDF of the thesis can be found here.