MIT Kavli Institute Directory

Rozenn Boissay

Postdoctoral Associate Postdoctoral Scholar

I am a postdoctoral researcher at the MIT Kavli Institute for Astrophysics and Space Research since February 2017. I obtained my master degree in Astrophysics at the University of Strasbourg (France) in 2011, as well as an engineering diploma in Physics from Telecom Physique Strasbourg (TPS). I then got my PhD at the University of Geneva in 2016, working on Active Galactic Nuclei (AGN), under the supervision of Dr. Stéphane Paltani.

Research interests: 

During my PhD, I worked on emission mechanisms and structure of Active Galactic Nuclei, in particular using X-ray observations from, for example, XMM-Newton, Swift and INTEGRAL satellites. I was particularly interested in the origin of the soft-excess, an excess of X-ray emission below 1 keV detected in a large fraction of Seyfert 1 galaxies. The nature of this feature is still strongly debated. At MIT, I will continue to work on this subject, as well as on the continuum emission and on reflection features from local and distant materials. Furthermore, using the high-resolution spectrometers onboard Chandra, I will study absorbers detected in unobscured AGN in X-rays, and characterize them in optical, ultraviolet, infrared and radio bands, in order to have a view of the outflows at larger scales and hence a better understanding of the AGN feedback phenomenon.


Contact Information

t: 617-253-7909


MS, Astrophysics, University of Strasbourg (France), 2011 Engineering Diploma, Physics, Telecom Physique Strasbourg (TPS) PhD, Astrophysics, University of Geneva, 2016