Aldering, G. and Akerlof, C. and Amanullah, R. and Astier, P. and Barrelet, E. and Bebek, C. and Bergstrom, L. and Bercovitz, J. and Bernstein, G. and Bester, M. and Bonissent, A. and Bower, C. and Carithers, W. and Commins, E. and Day, C. and Deustua, S. and DiGennaro, R. and Ealet, A. and Ellis, R. and Eriksson, M. and Fruchter, A. and Genat, J.F. and Goldhaber, G. and Goobar, A. and Groom, D. and Harris, S. and Harvey, P. and Heetderks, H. and Holland, S. and Huterer, D. and Karcher, A. and Kim, A. and Kolbe, W. and Krieger, B. and Lafever, R. and Lamoureux, J. and Lampton, M. and Levi, M. and Levin, D. and Linder, E. and Loken, S. and Malina, R. and Massey, R. and McKay, T. and McKee, S. and Miquel, R. and Mortsell, E. and Mostek, N. and Mufson, S. and Musser, J. and Nugent, P. and Oluseyi, H. and Pain, R. and Palaio, N. and Pankow, D. and Perlmutter, S. and Pratt, R. and Prieto, E. and Refregier, A. and Rhodes, J. and Robinson, K. and Roe, N. and Sholl, M. and Schubnell, M. and Smadja, G. and Smoot, G. and Spadafora, A. and Tarle, G. and Tomasch, A. and von der Lippe, H. and Vincent, D. and Walder, J. and Wang, G. (2002) 'Overview of the SuperNova/Acceleration Probe (SNAP).', in Future research direction and visions for astronomy : 25-26 August, 2002, Waikoloa, Hawaii, USA. Bellingham: Society of Photo-optical Instrumentation Engineers, pp. 146-157. Astronomy Group. (4835).
The SuperNova / Acceleration Probe (SNAP) is a space-based experiment to measure the expansion history of the Universe and study both its dark energy and the dark matter. The experiment is motivated by the startling discovery that the expansion of the Universe is accelerating. A 0.7~square-degree imager comprised of 36 large format fully-depleted n -type CCD's sharing a focal plane with 36 HgCdTe detectors forms the heart of SNAP, allowing discovery and lightcurve measurements simultaneously for many supernovae. The imager and a high-efficiency low-resolution integral field spectrograph are coupled to a 2-m three mirror anastigmat wide-field telescope, which will be placed in a high-earth orbit. The SNAP mission can obtain high-signal-to-noise calibrated light-curves and spectra for over 2000 Type Ia supernovae at redshifts between z = 0.1 and 1.7. The resulting data set can not only determine the amount of dark energy with high precision, but test the nature of the dark energy by examining its equation of state. In particular, dark energy due to a cosmological constant can be differentiated from alternatives such as "quintessence", by measuring the dark energy's equation of state to an accuracy of ± 0.05, and by studying its time dependence.
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