University of Southampton
X-ray binaries are one of the brightest X-ray sources in the sky.
These are gravitationally bound systems consisting of a compact
object (either a neutron star or a black hole) and usually a normal star
as a companion, both rotating around a common centre of mass.
The compact object shines in X-rays due to gravitational energy released
via mass transfer from the donor (accretion).
I am interested to answer the fundamental questions about the physics of
accretion flows around both the neutron star and black holes, study the geometry
of emission region & reprocessing. Another unique aspect of neutron star low mass
X-ray binaries which is of interest to me is the study of thermonuclear X-ray bursts.
I carry out challenging temperature measurement studies during these X-ray bursts.
Doing so will help in finding tight constraints to the radius of a neutron star.
I use data from several active and past X-ray missions for my work.
Currently, I am actively involved in the India's first multi-wavelength
mission 'ASTROSAT' (LAXPC payload).
Interests and expertise (Subject groups)