Type of talk
Seminar
Speaker
Dr. Amar Deo Chandra
Affiliation
ARIES
Date and Time of Talk
Venue
Auditorium
Abstract
Be/X-ray binaries (BeXRBs) consist of rapidly rotating Be stars with neutron star companions in an eccentric orbit. The interaction of the neutron star with the Be star's disc fuels X-ray outbursts in these systems. We carry out multiwavelength (X-ray, optical and UV) studies of the BeXRBs IGR J06074+2205 and GX 304-1 using observations from space and ground-based observatories. We use X-ray observations from AstroSat, Swift, NuStar and XMM-Newton to probe X-ray variabilities in these systems. We utilise archival optical photometric data and UV observations from Swift to probe variability of the Be star. We use optical spectroscopic observations from DOT and HCT to study the emission lines in the optical spectra of IGR J06074+2205, which can be useful to trace the evolution of the accretion disc around the Be star. We discuss how regular multiwavelength monitoring observations can enable us to improve our understanding of the outbursts and cinders (low states) in these systems.
Email Speaker
amardeo@aries.res.in
About Speaker
Dr. Amar Deo Chandra obtained his PhD from IISER Kolkata. He is currently a postdoctoral fellow at ARIES. His current research interests are multi-wavelength studies of X-ray binaries, transients and pulsars. He explores variabilities in X-ray binaries such as outbursts and quiescent states, etc. He is also interested in optical instrumentation related to interferometry, adaptive optics and fast photometry of cosmic sources.
Email Host
jagdish@aries.res.in
Host Name
Jagdish
Host Phone (ext/mob)
755