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Research Areas: Observational Cosmology; Early Universe Physics
We are building instruments with which we observe the 'cosmic microwave background radiation' (CMB). This radiation is a relic remnant from the big bang. Detailed characterization of the properties of the CMB can give tremendous amount of information about the evolution of the universe. By 'evolution of the universe' we mean: from immediately right after the bang until galaxies and clusters of galaxies formed. Already our research has claimed national recognition: Science Magazine has labeled results that we published in 2000 as "one of the 10 most important breakthroughs in science for the year 2000".
The instruments we build are launched on balloon borne platforms to altitudes above 100,000 ft. They use the highest sensitivity detectors in the world, as well as many other innovations that you won't find in Radio Shack. The balloon flight usually lasts between a few hours to few weeks.
Some members of our group specialize in the analysis and interpretation of data and its implication for cosmology. Those members use the facilities of the Minnesota Supercomputing Institute.
A Millimeter-Wave Achromatic Half Wave Plate, [download jan5_sub.pdf]
MAXIPOL: COSMIC MICROWAVE BACKGROUND POLARIMETRY USING A ROTATING HALF-WAVE PLATE, [download Johnson_etal2007.pdf]
MAXIPOL: DATA ANALYSIS AND RESULTS, [download wu_etal20061112_nice.pdf]
The EBEX Experiment, [download Oxley_EBEX2004.pdf]
S. Hanany, T. Matsumura, B. Johnson, J. R. Hull, and K. B. Ma, A Cosmic Micorwave Background Radiation Polarimeter Using Superconducting Bearings, 2003, IEEE Trans. Appl. Supercond., Vol. 13, pg. 2128, astro-ph/0304312 [abstract]
M. E. Abroe, J. Borrill, S. Hanany, A. Jaffe, B. Johnson, A. T. Lee, B. Rabii, P. L. Richards, G. Smoot, R. Stompor, C. Winant, Correlations Between the WMAP and MAXIMA Cosmic Microwave Background Anisotropy Maps, 2004, ApJ, Vol. 605, 607. astro-ph/0308355 [abstract]
A. Benoit et al., First Detection of Polarization of the Submillimetre Galactic Dust Emission by Archeops, 2004, Astronomy and Astrophysics, Vol. 424, 571, astro-ph/0306222 [abstract]
S. Hanany, P.A.R Ade, A. Balbi, J.J. Bock, J. Borrill, A. Boscaleri, P. de Bernardis, P.G. Ferreira, V.V. Hristov, A.H. Jaffe, A.E. Lange, A.T. Lee, P.D. Mauskopf, C.B. Netterfield, S. Oh, E. Pascale,, MAXIMA-1: A Measurement of the Cosmic Microwave Background Anisotropy on Angular Scale of 10 Arcminutes to 5 Degrees, ApJ, 545L, 5, astro-ph/0005123 (2000). [abstract]