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Nickolay Y. Gnedin

Scientist II, Fermilab; Professor, The University of Chicago

Ph.D., Princeton University, 1996
 
Contact Information
Phone: (773) 834-4388
Location: ERC 409
Email: gnedinfnal.gov
WWW: Web Site

 
Research
Picture: Research
Computer simulation: how galaxies reionize the universe
My research interests range from General Relativity to physics of the interstellar medium to cosmology. Right now, for most of the time I work on numerical cosmological simulations, including (but not limited to) simulating galaxy formation, formation of supermassive black holes, and evolution of the intergalactic medium. I like doing numerics and working with a computer. This often includes quite sophisticated visualization of the simulation results, so, I guess, I am a little bit a movie director as well. Isn't it great to direct a movie where galaxies and stars are the actors?!

 
Students
Past Students

GRADUATE: Denis Erkal (2013), Nick Hollon (2013), Samuel N. Leitner (2012)

UNDERGRADUATE: Leul Bezane (2012)

 
Currently in Committees
  • Conferences, Workshops and Visitors committee

 
KICP Publications
2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006


Latest Journal Publications
  1. "The Effect of Warm Dark Matter on Early Star Formation Histories of Massive Galaxies: Predictions from the CROC Simulations", arXiv:1909.10025 (Sep 2019)
  2. "Cosmic Reionization On Computers: Reionization Histories of Present-day Galaxies", The Astrophysical Journal, Volume 882, Issue 2, article id. 152, 5 pp. (2019) (Sep 2019)
  3. "Hierarchical Particle Mesh: An FFT-accelerated Fast Multipole Method", The Astrophysical Journal Supplement Series, Volume 243, Issue 2, article id. 19, 7 pp. (2019) (Aug 2019)
  4. "Constraining the Tail End of Reionization Using Lyα Transmission Spikes", The Astrophysical Journal, Volume 876, Issue 1, article id. 31, 13 pp. (2019) (May 2019)
  5. "Cosmic Reionization On Computers: Reionization Histories of Present-day Galaxies", arXiv:1903.06179 (Mar 2019)
  6. "What Sets the Slope of the Molecular Kennicutt-Schmidt Relation?", The Astrophysical Journal, Volume 870, Issue 2, article id. 79, 17 pp. (2019) (Jan 2019)
  7. "Constraints on the Duty Cycles of Quasars at z ˜ 6", The Astrophysical Journal, Volume 868, Issue 2, article id. 126, 6 pp. (2018) (Dec 2018)
  8. "Baryonic Effects in Cosmic Shear Tomography: PCA Parameterization and the Importance of Extreme Baryonic Models", The Astrophysical Journal, Volume 863, Issue 2, article id. 173, 6 pp. (2018) (Aug 2018)
  9. "Star Cluster Formation in Cosmological Simulations. II. Effects of Star Formation Efficiency and Stellar Feedback", The Astrophysical Journal, Volume 861, Issue 2, article id. 107, 19 pp. (2018) (Jul 2018)
  10. "How Galaxies Form Stars: The Connection between Local and Global Star Formation in Galaxy Simulations", The Astrophysical Journal, Volume 861, Issue 1, article id. 4, 20 pp. (2018) (Jul 2018)
  11. "Enforcing the Courant-Friedrichs-Lewy condition in explicitly conservative local time stepping schemes", Journal of Computational Physics, Volume 359, p. 93-105 (Apr 2018)
  12. "Was there an early reionization component in our universe?", Journal of Cosmology and Astroparticle Physics, Issue 04, article id. 024 (2018) (Apr 2018)
  13. "Warm Dark Matter and Cosmic Reionization", The Astrophysical Journal, Volume 852, Issue 2, article id. 139, 7 pp. (2018) (Jan 2018)
  14. "The Physical Origin of Long Gas Depletion Times in Galaxies", The Astrophysical Journal, Volume 845, Issue 2, article id. 133, 17 pp. (2017) (Aug 2017)
  15. "Cosmic Reionization on Computers: Properties of the Post-reionization IGM", The Astrophysical Journal, Volume 841, Issue 1, article id. 26, 7 pp. (2017) (May 2017)
  16. "The Spectral Evolution of the First Galaxies. III. Simulated James Webb Space Telescope Spectra of Reionization-epoch Galaxies with Lyman-continuum Leakage", The Astrophysical Journal, Volume 836, Issue 1, article id. 78, 12 pp. (2017) (Feb 2017)
  17. "Impact of Baryonic Physics on Intrinsic Alignments", The Astrophysical Journal, Volume 834, Issue 2, article id. 169, 10 pp. (2017) (Jan 2017)
  18. "Star Cluster Formation in Cosmological Simulations. I. Properties of Young Clusters", The Astrophysical Journal, Volume 834, Issue 1, article id. 69, 16 pp. (2017) (Jan 2017)
  19. "On the Proper Use of the Reduced Speed of Light Approximation", The Astrophysical Journal, Volume 833, Issue 1, article id. 66, 4 pp. (2016) (Dec 2016)
  20. "The Effects of Dark Matter Annihilation on Cosmic Reionization", The Astrophysical Journal, Volume 833, Issue 2, article id. 162, 7 pp. (2016) (Dec 2016)

Latest Conference Proceedings
  1. "Revisiting The First Galaxies: The Epoch of Population III Stars", American Astronomical Society, AAS Meeting #221, id.#129.03 (Jan 2013)
  2. "Fueling Supermassive Black Holes in High-Resolution Cosmological Simulations", American Astronomical Society, AAS Meeting #217, #335.24; Bulletin of the American Astronomical Society, Vol. 43, 2011 (Jan 2011)
  3. "On the Kennicutt-Schmidt Relation of Low-Metallicity High-Redshift Galaxies", HUNTING FOR THE DARK: THE HIDDEN SIDE OF GALAXY FORMATION. Edited by Victor P. Debattista and Cristina C. Popescu AIP Conference Proceedings, Volume 1240, pp. 115-118 (2010) (Jun 2010)
  4. "Growing Supermassive Black Holes Inside Cosmological Simulations", Co-Evolution of Central Black Holes and Galaxies, Proceedings of the International Astronomical Union, IAU Symposium, Volume 267, p. 333-333 (May 2010)
  5. "Scaling Relations of Dwarf Galaxies without Supernova-Driven Winds", Dark Galaxies and Lost Baryons, Proceedings of the International Astronomical Union, IAU Symposium, Volume 244, p. 256-265 (May 2008)
  6. "From Megaparsecs to Milliparsecs: Modeling the Environments of Supermassive Black Holes with Cosmological Simulations", American Astronomical Society, AAS Meeting #211, #156.02 (Dec 2007)
  7. "Scaling Relations of Dwarf Galaxies without Supernova-Driven Winds", Dark Galaxies and Lost Baryons, Proceedings of the International Astronomical Union, IAU Symposium, Volume 244, p. 256-265 (Jun 2007)

 
Visitors
Past Visitors:
  1. Philip Hopkins, California Institute of Technology (2018)
  2. Elise Jennings, Durham University (2011)
  3. Adam Lidz, University of Pennsylvania (2010)
  4. Mary Putman, Columbia University (2010)
  5. Marcel Zemp, University of Michigan (2009)
  6. Xiaohui Fan, University of Arizona (2008)
  7. Christopher McKee, University of California, Berkeley (2008)
  8. Douglas Rudd, Institute for Advanced Study, Princeton (2008)
  9. Martin White, University of California, Berkeley (2008)
  10. Ann Zabludoff, Unversity of Arizona/Steward Observatory (2008)