Mid-Infrared Variability from the Spitzer Deep Wide-Field Survey Szymon KozGLYPH<suppress>lowski $^{1}$, Christopher S. Kochanek1 , $^{2}$, Daniel Stern$^{3}$, Matthew L. N. Ashby$^{4}$, Roberto J. Assef $^{1}$, J. J. Bock$^{5}$, C. Borys$^{5}$, K. Brand$^{6}$, M. Brodwin4 , $^{21}$, M. J. I. Brown$^{7}$, R. Cool $^{8}$, A. Cooray$^{9}$, S. Croft$^{10}$, Arjun Dey$^{11}$, P. R. Eisenhardt$^{3}$, A. Gonzalez$^{12}$, V. Gorjian $^{3}$, R. Griffith$^{3}$, N. Grogin$^{6}$, R. Ivison13 , $^{14}$, J. Jacob$^{3}$, B. T. Jannuzi$^{11}$, A. Mainzer $^{3}$, L. Moustakas$^{3}$, H. R¨ ottgering $^{15}$, N. Seymour$^{16}$, H. A. Smith$^{4}$, S. A. Stanford$^{17}$, J. R. Stauffer $^{18}$, I. S. Sullivan$^{6}$, W. van Breugel$^{19}$, S. P. Willner$^{4}$, and E. L. Wright20 arXiv:1002.3365v2 [astro-ph.CO] 28 May 2010 $^{1}$Department of Astronomy, The Ohio State University, 140 West 18th Avenue, Columbus, OH 43210, USA; e-mail: simkoz@astronomy.ohio-state.edu $^{2}$The Center for Cosmology and Astroparticle Physics, The Ohio State University, Columbus, OH 43210, USA $^{3}$Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Drive, Pasadena, CA 91109, USA $^{4}$Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA $^{5}$California Institute of Technology, Pasadena, CA 91125, USA $^{6}$Space Telescope Science Institute, Baltimore, MD 21218, USA $^{7}$School of Physics, Monash University, Clayton 3800, Victoria, Australia $^{8}$Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA $^{9}$University of California, Irvine, CA 92697,USA $^{10}$University of California, Berkeley, CA 94720,USA $^{11}$National Optical Astronomical Observatory, 950 North Cherry Avenue, Tucson, AZ 85719, USA $^{12}$Department of Astronomy, University of Florida, Gainesville, FL 32611, USA $^{13}$UK Astronomy Technology Centre, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, UK $^{14}$Institute of Astronomy, University of Edinburgh, Blackford Hill, Edinburgh, EH9 3HJ, UK $^{15}$Leiden Observatory, Leiden University, PO Box 9513, 2300 RA Leiden, The Netherlands $^{16}$Mullard Space Science Laboratory, University College London, UK $^{17}$University of California, Davis, CA 95616, USA $^{18}$Spitzer Science Center, California Institute of Technology, Pasadena, CA 91125, USA $^{19}$University of California, Merced, CA 95344, USA $^{20}$University of California, Los Angeles, CA 90095-1562, USA $^{21}$W. M. Keck Postdoctoral Fellow at the Harvard-Smithsonian Center for Astrophysics