Theoretical Astrophysics Group, Fermi National Accelerator Laboratory; Associate Professor, KICP
Ph.D, Physics, University of Wisconsin, 2003
fnal.govWWW: Web Site
My research focuses on the interface between particle physics and cosmology. Particle physics explores the fundamental nature of energy and matter, while cosmology is the science of the universe itself, including its composition, history and evolution. Some of the areas of this field that I have worked on include dark matter, supersymmetry, high-energy neutrinos, extra dimensions and ultra-high energy cosmic rays.
As the new field of astro-particle physics rapidly develops, we are witnessing an exciting time in the history of science. In addition to the progress being made in the traditional areas of experimental particle physics (accelerator experiments), exciting developments are also taking place in the use of astrophysical experiments to study elementary particles. The most striking example of this success is the measurement of the neutrino masses and mixing angles that have been made over the last decade. Many of the questions asked by particle physicists are difficult to address with collider experiments and are being explored ever increasingly by astrophysicists. These efforts include the development of particle dark matter searches, ultra-high energy cosmic rays detectors, gamma-ray telescopes and high-energy neutrino telescopes. My research is focused primarily, although not entirely, on studying and exploring particle physics beyond the Standard Model using astrophysics.
KICP Highlights & News
- Horizon 2015 : Dancing in the Dark - The End of Physics?, BBC
- Searching High & Low for Dark Matter, The Kavli Foundation
- Fermi Telescope data tantalize with new clues to dark matter, The University of Chicago News Office
- KICP scientists make the case for annihilating WIMPs in the galactic center, KICP News
- Case for Dark Matter Signal Strengthens, Quanta Magazine, Simons Foundation
- Congratulations to Dr. Christopher Kelso!, KICP News
- Second experiment hints at seasonal dark matter signal, NewScientist
- Signs of dark matter from Minnesota mine, ScienceNews
- Revealing the Galaxy's Dark Side, U.S. News & World Report
- A CoGeNT result in the hunt for dark matter, NatureNews
Talks, Lectures, & Workshops
- KICP Workshop, Dark Matter Hub workshop
- PhD Thesis Defense, Alan Robinson, "Dark Matter Limits from a 2L C3F8 Filled Bubble Chamber"
- KICP Event, Chicago Science Fest: The Mysteries of Dark Matter, Dark Energy, and the Accelerating Universe
- KICP Workshop, Workshop: High-Energy Messengers: Connecting the Non-Thermal Extragalactic Backgrounds (organizer)
- KICP Talk, Physics colloquium: Daniel Hooper, "Dark Matter Annihilation in the Gamma-Ray Sky"
- KICP Cosmology Course, "Dark Matters", Short Course for Museum & Planetarium Staff (course instructor)
- PhD Thesis Defense, Melanie Simet: "Galaxy cluster center detection methods with weak lensing"
- KICP Workshop, 9th International Conference "Identification of Dark Matter" (organizer)
- PhD Thesis Defense, Christopher Kelso: "Recent Results in Dark Matter Direct Detection Experiments" (PhD advisor)
- KICP Workshop, Chicagoland and Midwest Dark Matter Workshop (organizer)
- KICP Workshop, PFC3 Collaboration Meeting
- KICP Workshop, 19th International Conference on Supersymmetry and Unification of Fundamental Interactions (organizer)
- PhD Thesis Defense, Megan Gralla, "Radio Sources in Galaxy Clusters"
- KICP Talk, Cafe Scientifique: Dan Hooper, "Our Dark Cosmos"
- KICP Cosmology Course, "The Dark Universe", Cosmology Short Course (course director)
- KICP Seminar, The hunt for dark matter continues
2015 | 2014 | 2013 | 2012 | 2011 | 2010Latest Journal Publications
Latest Conference Proceedings
- "A Predictive Analytic Model for the Solar Modulation of Cosmic Rays", arXiv:1511.01507 (Nov 2015)
- "On The gamma-ray emission from Reticulum II and other dwarf galaxies", Journal of Cosmology and Astroparticle Physics, Issue 09, article id. 016, pp. (2015) (Sep 2015)
- "Indications of negative evolution for the sources of the highest energy cosmic rays", Physical Review D, Volume 92, Issue 6, id.063011 (Sep 2015)
- "Challenges in explaining the Galactic Center gamma-ray excess with millisecond pulsars", Journal of Cosmology and Astroparticle Physics, Issue 06, article id. 043, pp. (2015) (Jun 2015)
- "The Galactic Center GeV Excess from a Series of Leptonic Cosmic-Ray Outbursts", arXiv:1506.05119 (Jun 2015)
- "3.55 keV line from exciting dark matter without a hidden sector", Physical Review D, Volume 91, Issue 7, id.075018 (Apr 2015)
- "A critical reevaluation of radio constraints on annihilating dark matter", Physical Review D, Volume 91, Issue 8, id.083507 (Apr 2015)
- "Examining The Fermi-LAT Third Source Catalog In Search Of Dark Matter Subhalos", arXiv:1504.02087 (Apr 2015)
- "Improving the sensitivity of gamma-ray telescopes to dark matter annihilation in dwarf spheroidal galaxies", Physical Review D, Volume 91, Issue 6, id.061302 (Mar 2015)
- "What does the PAMELA antiproton spectrum tell us about dark matter?", Journal of Cosmology and Astroparticle Physics, Issue 03, article id. 021, pp. (2015) (Mar 2015)
- "Prospects for detecting gamma rays from annihilating dark matter in dwarf galaxies in the era of the Dark Energy Survey and Large Synoptic Survey Telescope", Physical Review D, Volume 91, Issue 6, id.063515 (Mar 2015)
- "Z' mediated dark matter models for the Galactic Center gamma-ray excess", Physical Review D, Volume 91, Issue 3, id.035025 (Feb 2015)
- "Flavored dark matter and the Galactic Center gamma-ray excess", Physical Review D, Volume 90, Issue 6, id.063512 (Sep 2014)
- "Hidden sector dark matter models for the Galactic Center gamma-ray excess", Physical Review D, Volume 90, Issue 1, id.015032 (Jul 2014)
- "Simplified dark matter models for the Galactic Center gamma-ray excess", Physical Review D, Volume 89, Issue 11, id.115022 (Jun 2014)
- "Stringent constraints on the dark matter annihilation cross section from subhalo searches with the Fermi Gamma-Ray Space Telescope", Physical Review D, Volume 89, Issue 1, id.016014 (Jan 2014)
- "Millisecond pulsars cannot account for the inner Galaxy's GeV excess", Physical Review D, vol. 88, Issue 8, id. 083009 (Oct 2013)
- "Testing the dark matter origin of the WMAP-Planck haze with radio observations of spiral galaxies", Journal of Cosmology and Astroparticle Physics, Issue 07, article id. 026, pp. (2013) (Jul 2013)
- "Circum-galactic Gas and the Isotropic Gamma-Ray Background", The Astrophysical Journal, Volume 763, Issue 1, article id. 21, 6 pp. (2013) (Jan 2013)
- "Nonthermal dark matter mimicking an additional neutrino species in the early universe", Physical Review D, vol. 85, Issue 6, id. 063513 (Mar 2012)
- "Dark Matter Annihilation and the Origin of Synchrotron Radio Emission from the Galactic Center Filaments", American Astronomical Society, AAS Meeting #219, #112.03 (Jan 2012)
- "The Hunt For Dark Matter", American Physical Society, APS April Meeting 2011, April 30-May 3, 2011, abstract #A1.003 (Apr 2011)
- Timothy Linden, UC - Santa Cruz (2013)