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College of Arts and Sciences

Louis Strigari

Assistant Professor

Ph.D, The Ohio State University, 2005.

Office: Swain West 263
Phone: 812-856-5252
Email: lstrigar at

Dark matter, which is deduced through the motions of stars and gas in galaxies, and large scale observations of gravitational lensing and of the cosmic microwave background, is a well-established aspect of cosmological theory. Though its precise nature is unknown, it has become clear its existence points directly to new physics, likely in the form of an undiscovered elementary particle that is connected to a theoretical model such as supersymmetry. Through a variety of ongoing experimental searches, we are closing in on a solution to the dark matter problem. Indirect dark matter detection methods are gaining sensitivity to the thermal relic scale of the dark matter annihilation cross section, which connects the production of dark matter to the physics of the early universe. Direct dark matter detection methods are closing in on well-motivated regions of supersymmetric parameter space. Because of the vast amount of data available, it is clear that a multifaceted approach is required in order to solve the dark matter problem over the next several years. My research involves developing theoretical dark matter models motivated by astrophysics, cosmology, and particle physics, and examining them with astroparticle, astronomical, and collider data sets. I analyze data from the Fermi-LAT gamma-ray space telescope, and Air Cerenkov Telescopes (ACT) such as VERITAS, MAGIC, and HESS, to search for signatures of dark matter particles annihilating into gamma-rays in various astrophysical environments, particularly in Milky Way satellite galaxies (dwarf spheroidals). I am additionally interested in extracting information from limits (and possible signals) in direct dark matter searches.

Selected Publications

  • Galactic Searches for Dark Matter, Louis E. Strigari, Physics Reports, Volume 531, Issue 1, p. 1-88, 2013
  • The Cosmic Abundance of Classical Milky Way Satellites, Louis E. Strigari and Risa H. Wechsler, Astrophysical Journal, bf 749, 75, 2012
  • Nomads of the Galaxy, Louis E. Strigari, Matteo Barnabe, Phillip J. Marshall, Roger D. Blandford, Monthly Notices of the Royal Astronomical Society, 423: 1856, 2012
  • Kinematics of Milky Way Satellites in a Lambda Cold Dark Matter Universe, Louis E. Strigari, Carlos S. Frenk, Simon D.M. White, Monthly Notices of the Royal Astronomical Society, 408:2364, 2010
  • Neutrino Coherent Scattering Rates at Direct Dark Matter Detectors, Louis E. Strigari, New J. Phys.11:105011, 2009
  • A Common Mass Scale for Milky Way Satellite Galaxies, Louis E. Strigari, James S. Bullock, Manoj Kaplinghat, Joshua D. Simon, Marla Geha, Beth Willlman, Matthew G. Walker, Nature 7208, 1096-1097, 2008