Geza Gyuk

Director of Astronomy at the Adler Planetarium & Astronomy Museum and a Senior Research Associate, University of Chicago

Ph.D., Physics, University of Chicago
Contact Information
Phone: (773) 702-0480
Location: AAC109
Dr. Gyuk is interested in Cosmology and the structure of our galaxy. He is particularly interested in the galactic halos and the dark matter of which they consist. He is a member of MEGA, a worldwide collaboration to probe the halo of the Andromeda Galaxy using Gravitational Microlensing, a technique that uses the effect of gravity on light to study dark matter.

Dr. Gyuk's research work has focused on a broad range of activities including the effect of decaying neutrinos in primordial nucleosynthesis, exploration of the content and kinematics of the Galactic halo utilizing gravitational microlensing, searching for very old white dwarfs in the galactic halo, and the study of extra-solar planetary atmospheres. His current projects are directed to the characterization of main-belt asteroids and ultra high-energy gamma-ray astronomy.

Dr. Gyuk's outreach and education interests have been similarly broad. At the Adler his efforts have included working with show production and exhibit teams, teaching continuing education classes, working with education staff on program development and interacting with the media. Among his most exciting activities were his position as interim lead of the Adlerís Astronomy Connections team which provides teacher training in inquiry based astronomy education, leading the groups that developed the initial plans for the Cosmology Gallery and our Observing Experiences, and serving for three years as director of the Adler's summer program for high school students, Astro-Science Workshop. He is currently leading an effort to develop programs to give students, volunteers and visitors experience with hands on space exploration with high altitude balloons and pico-satellites.

Ongoing Scientific Projects:
KICP Publications
2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2006

Latest Journal Publications
  1. "Cherenkov Telescope Array Contributions to the 35th International Cosmic Ray Conference (ICRC2017)", arXiv:1709.03483 (Sep 2017)
  2. "Cherenkov Telescope Array Contributions to the 35th International Cosmic Ray Conference (ICRC2017)", arXiv:1709.03483 (Sep 2017)
  3. "Very high energy outburst of Markarian 501 in May 2009", Astronomy & Astrophysics, Volume 594, id.A76, 12 pp (Oct 2016)
  4. "Contributions of the Cherenkov Telescope Array (CTA) to the 6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma 2016)", arXiv:1610.05151 (Oct 2016)
  5. "VERITAS and multiwavelength observations of the BL Lacertae object 1ES 1741+196", Monthly Notices of the Royal Astronomical Society, Volume 459, Issue 3, p.2550-2557 (Jul 2016)
  6. "Upper Limits from Five Years of Blazar Observations with the VERITAS Cherenkov Telescopes", The Astronomical Journal, Volume 151, Issue 6, article id. 142, 19 pp. (2016) (Jun 2016)
  7. "VERITAS Collaboration Contributions to the 34th International Cosmic Ray Conference", arXiv:1510.01639 (Oct 2015)
  8. "VERITAS Detection of ő≥-Ray Flaring Activity From the BL Lac Object 1ES 1727+502 During Bright Moonlight Observations", The Astrophysical Journal, Volume 808, Issue 2, article id. 110, 11 pp. (2015) (Aug 2015)
  9. "CTA Contributions to the 34th International Cosmic Ray Conference (ICRC2015)", arXiv:1508.05894 (Aug 2015)
  10. "Erratum: VERITAS deep observations of the dwarf spheroidal galaxy Segue 1 [Phys. Rev. D 85, 062001 (2012)]", Physical Review D, Volume 91, Issue 12, id.129903 (Jun 2015)
  11. "Unprecedented study of the broadband emission of Mrk 421 during flaring activity in March 2010", Astronomy & Astrophysics, Volume 578, id.A22, 26 pp (Jun 2015)
  12. "The 2009 multiwavelength campaign on Mrk 421: Variability and correlation studies", Astronomy & Astrophysics, Volume 576, id.A126, 18 pp (Apr 2015)
  13. "A Search for Pulsations from Geminga above 100 GeV with VERITAS", The Astrophysical Journal, Volume 800, Issue 1, article id. 61, 7 pp. (2015) (Feb 2015)
  14. "Multiwavelength observations of Mrk 501 in 2008", Astronomy & Astrophysics, Volume 573, id.A50, 12 pp (Jan 2015)
  15. "The most powerful flaring activity from the NLSy1 PMN J0948+0022", Monthly Notices of the Royal Astronomical Society, Volume 446, Issue 3, p.2456-2467 (Jan 2015)
  16. "VERITAS Observations of the BL Lac Object PG 1553+113", The Astrophysical Journal, Volume 799, Issue 1, article id. 7, 9 pp. (2015) (Jan 2015)
  17. "VizieR Online Data Catalog: Mrk421 in March 2010 (Aleksic+, 2015)", VizieR On-line Data Catalog: J/A+A/578/A22. Originally published in: 2015A&A...578A..22A (Jan 2015)
  18. "Investigating Broadband Variability of the TeV Blazar 1ES 1959+650", The Astrophysical Journal, Volume 797, Issue 2, article id. 89, 11 pp. (2014) (Dec 2014)
  19. "Constraints on Very High Energy Emission from GRB 130427A", The Astrophysical Journal Letters, Volume 795, Issue 1, article id. L3, 6 pp. (2014) (Nov 2014)
  20. "VizieR Online Data Catalog: Multiwavelength observations of Mrk 501 in 2008 (Aleksic+, 2015)", VizieR On-line Data Catalog: J/A+A/573/A50. Originally published in: 2015A&A...573A..50A (Nov 2014)

Latest Conference Proceedings
  1. "The Science and Design of the AGIS Observatory", American Astronomical Society, AAS Meeting #215, #441.07; Bulletin of the American Astronomical Society, Vol. 42, p.401 (Jan 2010)
  2. "Status of the VERITAS Observatory", HIGH ENERGY GAMMA-RAY ASTRONOMY: Proceedings of the 4th International Meeting on High Energy Gamma-Ray Astronomy. AIP Conference Proceedings, Volume 1085, pp. 657-660 (2008) (Dec 2008)