Ph.D. - Astronomy - Georgia State University - 2014
M.S. - Physics - Georgia State University - 2011
B.S. - Physics - Missouri State University - 2007
Joseph R Eggen
(SR. FACULTY SPECIALIST)
| Email: | joseph.r.eggen@nasa.gov |
| Phone: | 301.286.4645 |
| Org Code: | 660 |
| Address: |
NASA/GSFC Mail Code 662 Greenbelt, MD 20771 |
| Employer: | UNIV OF MARYLAND COLLEGE PARK |
Research Interests
Relativistic Jets
Astrophysics: Active Galactic Nuclei (AGN)My research has focused on the study of blazars and blazar-like objects, especially radio-loud Narros Line Syfert 1 galaxies. NLSy1s were discovered to be gamma-ray sources by Fermi's Large Area Telescope, so my focus has been to characterize the time-variable nature of their emissions using Fermi-LAT data; optical & IR time-series photometry; and optical time-series polarimetry.
Current Projects
Fermi Science Support Center
Gamma-ray Astrophysics
As a member of the FSSC I work on the Fermi ScienceTools, which is a software suite used to analyze Fermi data. I am also one of the Mission Planners, which means that I build the weekly observing schedule that is uploaded to the spacecraft. I also perform reasearch using data from Fermi's Large Area Telescope (LAT), in combination with data from other facilities.
Positions/Employment
Sr. Faculty Specialist
University of Maryland, College Park - NASA GSFC
October 2016 - Present
Work as a member of the Fermi Science Support Center (FSSC) in the areas of Mission Operations, User Support, Software Development, and Public Outreach.
Education
Professional Societies
American Astronomical Society
Member
2006 - Present
Professional Service
Fermi Cycle 8 Peer Review - Panel Member
Publications
Refereed
2022. "Optical variability of the very radio-loud narrow line Seyfert 1 galaxy, 1H 0323+342." Monthly Notices of the Royal Astronomical Society 517 (3): 3257-3262 [10.1093/mnras/stac2805] [Journal Article/Letter]
2014. "THE EXTREME BEHAVIOR OF THE RADIO-LOUD NARROW-LINE SEYFERT 1 GALAXY J0849+5108." The Astrophysical Journal 794 (1): 93 [10.1088/0004-637x/794/1/93] [Journal Article/Letter]
2013. "A TIGHT CONNECTION BETWEEN GAMMA-RAY OUTBURSTS AND PARSEC-SCALE JET ACTIVITY IN THE QUASAR 3C 454.3." The Astrophysical Journal 773 (2): 147 [10.1088/0004-637x/773/2/147] [Journal Article/Letter]
2013. "THE VARIABLE OPTICAL POLARIZATION AND FERMI OBSERVATIONS OF PMN J0948+0022." The Astrophysical Journal 773 (2): 85 [10.1088/0004-637x/773/2/85] [Journal Article/Letter]
2012. "THE EXTREME OPTICAL VARIABILITY OF J0948+0022." The Astrophysical Journal 762 (2): 124 [10.1088/0004-637x/762/2/124] [Journal Article/Letter]
2011. "THE REMARKABLE γ-RAY ACTIVITY IN THE GRAVITATIONALLY LENSED BLAZAR PKS 1830-211." The Astrophysical Journal 736 (2): L30 [10.1088/2041-8205/736/2/l30] [Journal Article/Letter]
2011. "Whole Earth Telescope observations of the subdwarf B star KPD 1930+2752: a rich, short-period pulsator in a close binary." Monthly Notices of the Royal Astronomical Society 412 371 [Full Text] [10.1111/j.1365-2966.2010.17912.x] [Journal Article/Letter]
2009. "Time-series spectroscopy and photometry of the pulsating subdwarf B star PG 1219+534 (KY UMa)." A&A 493 (1): 175-183 [10.1051/0004-6361:200810775] [Journal Article/Letter]
Selected Public Outreach
Astro Brief: Joe Eggen and Gamma Rays
May 2023 - May 2023
A conversation for local public radio with Dr. Mike Reed of Missouri State University about my work in Gamma Ray astrophysics with the Fermi mission.