Author affiliations
1 Fred Lawrence Whipple Observatory, Harvard-Smithsonian Center for Astrophysics, Amado, AZ; Current address: Argonne National Laboratory, Argonne IL
2 Department of Physics, University of Utah, Salt Lake City, UT
3 Department of Physics, Tanta University, Tanta, Egypt
4 Department of Physics, University of Massachusetts, Amherst, MA
5 School of Physics and Astronomy, University of Leeds, Leeds, UK
6 Department of Physics, Washington University, St. Louis, MO
7 Argonne National Laboratory, Argonne, IL
8 Department of Physics and Astronomy, University of California, Los Angeles, CA
9 School of Physics, University College, Belfield, Dublin, Ireland
10 Department of Physics, Purdue University, West Lafayette, IN
11 Department of Physics, University of Oxford, Oxford, UK
12 Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA
13 Department of Physics and Astronomy, Barnard College, Columbia University, NY
14 Department of Astronomy, Adler Planetarium and Astronomy Museum, Chicago, IL
15 Department of Physics, National University of Ireland, Galway, Ireland
16 Department of Physics, McGill University, Montreal, Canada
17 Enrico Fermi Institute, University of Chicago, Chicago, IL
18 Department of Physics and Astronomy, DePauw University, Greencastle, IN
19 Department of Physics and Astronomy, Iowa State University, Ames, IA
20 Department of Physical and Life Sciences, Galway-Mayo Institute of Technology, Dublin Road, Galway, Ireland
21 NASA Goddard Space Flight Center, Greenbelt, MD
22 Department of Applied Physics and Instrumentation, Cork Institute of Technology, Bishopstown, Cork, Ireland
23 Santa Cruz Institute for Particle Physics and Department of Physics, University of California, Santa Cruz, CA
