1. Department of Physics and Astronomy, University of New Mexico , 210 Yale Blvd NE, Albuquerque, NM 87106 , USA
2. Department of Physics, The Ohio State University , 191 W. Woodruff Ave., Columbus, OH 43210 , USA
3. Center for Cosmology and Astroparticle Physics, The Ohio State University , 191 W. Woodruff Ave., Columbus, OH 43210 , USA
4. Department of Astronomy, The Ohio State University , 140 W. 18th Ave., Columbus, OH 43210 , USA
5. School of Natural Sciences, Institute for Advanced Study , 1 Einstein Drive, Princeton, NJ 08540 , USA
6. Carnegie Observatories , 813 Santa Barbara Street, Pasadena, CA 91101 , USA