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Reflection spectroscopy in blackhole X-ray binaries

Project: 
AstroSat is an Indian space based multi-wavelength observatory, staring at astronomical objects over a wide range in energies, simultaneously. X-ray binaries (XRBs), blazars and GRBs are some of the several main targets which are regularly being monitored by Indian and international community since its launch in September 2015. I have been instrumental in the calibration of X-ray imaging instrument onboard AstroSat, named as the Soft X-ray Telescope (SXT). This telescope is equipped with Charge Coupled Device (CCD) as the focal plane detector which is almost identical to the one flown on XMM and Swift XRT. My involvement in calibrations have provided me a unique opportunity to understand the very basics of astronomy grade optics and detectors in addition to my scientific endeavors. This project is related to the investigation of disk/corona emission from low-mass X-ray binaries (LMXRB) using X-ray data from LAXPC (Large Area Proportional Counters) and SXT. In one widely accepted scenario, the hard X-rays from corona  are reflected from the disk and hence the disk continuum displays the emission signatures due to reflection. Therefore, the investigation of broad-band spectrum can provides us the geometry and particle energy densities of the disk and corona in black-hole X-ray binaries. The quasi-periodic oscillations (QPOs) are another diagnostics which we aim to use for our proposed investigation. The project offered has fascinating goals and the interested student will actively be collaborating with our international collaborators.
Node This Project Is Offered On: 
(NWU)

Supervisor

Sunil
Chandra

Co-Supervisor

Requirements for students to address: 
Basic knowledge of Linux operating system and Python programming language will be helpful.
Research Area: 
Astrophysics


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