Feigelson completed a dissertation at Harvard under Riccardo Giacconi, and took a post-doctoral position at MIT with Claude Canizares. In 2003, he started a faculty position at Penn State where he has remained. Here he teaches all levels of astronomy from Astro 001 to graduate level classes. He conducts research in two areas -- X-ray studies of star formation and the cross-disciplinary astrostatistics -- where he wrote seminal papers in the foundation of the subfields and continues to play a leading role. He has recently been coappointed as Professor in the Department of Statistics at Penn State, received a Penn State medal for scientific achievement and the title Distinguished Senior Scholar of Astronomy & Astrophysics.
Using the Einstein
observatories in the 1980-90s, he discovered high levels of magnetic activity in young solar-type stars, allowing X-ray telescopes to trace pre-main sequence populations. He authored a major review
in 1999 on high-energy processes in young stars. The field was propelled forward by NASA's high-resolution Chandra X-ray Observatory. Feigelson and his collaborators conducted the Chandra Orion Ultradeep Project
(2005 Special Issue of ApJSuppl) and the current MYStIX project
(2013--). This combines X-ray and infrared surveys of massive star forming regions to trace young stellar populations. The work also has implications for meteoritics
and planet formation
Feigelson has collaborated with statisticians at Penn State for 30 years and been involved in the development of the field of astrostatistics. He introduced survival analysis
and elucidated linear regression
methods for astronomy. Under the auspices of Penn State's Center for Astrostatistics
, Feigelson and statistician Prof. G. Jogesh Babu have organized five research conferences entitledStatistical Challenges in Modern Astronomy
(1991, 1996, 2001, 2006, 2011), annual Summer Schools in Statistics for Astronomers
(2005--), and authored the text Modern Statistical Methods for Astronomy with R Applications
(2012). He is inaugural President of the International Astronomical Union Commission on Astroinformatics & Astrostatistics, co-edits the online Astrostatistics and Astroinformatics Portal
, and serves as the first Statistical Scientific Editor of the American Astronomical Society Journals. He is now engaged in a statistical approach to exoplanet detection based on parametric autoregressive modeling.