Sara Issaoun

Sara Issaoun

PhD student: Radbound University, Netherlands
Predoctoral Fellow, SAO
Sara Issaoun

My research centers around the data reduction and analysis of millimeter VLBI observations of the Galactic Center supermassive black hole, Sagittarius A*, under the supervision of Dr. Michael Johnson. I am working on total intensity and polarimetric studies of newly obtained 3.5mm VLBI observations of Sagittarius A*, which include, for the first time, the high time-resolution and sensitivity of ALMA. The analysis of the data will shed some light on how to disentangle between intrinsic source asymmetry and effects from interstellar scattering, help constrain the emission model and orientation of the source at 3.5mm to anchor 1.3mm observations of the Event Horizon Telescope, and study the plasma dynamics and energetics in the accretion flow of a supermassive black hole. I also contribute to the data processing and imaging efforts of the Event Horizon Telescope, as well as the development of a new imaging tool for compact sources imaged with sparse high-frequency arrays.

 

Disciplines