MAXIMA: Millimeter-wave anisotropy experiment imaging array

Details MAXIMA: Millimeter-wave anisotropy experiment imaging array MAXIMA: Millimeter-wave anisotropy experiment imaging array

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..586..214w&link_type=abstract

RELATIVISTIC ASTROPHYSICS: 20th Texas Symposium. AIP Conference Proceedings, Volume 586, pp. 214-216 (2001).

Astronomy and Astrophysics

Astrophysics

Observational Cosmology, Background Radiations, Radio, Microwave, Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

We discuss the status of the data obtained from the first two flights of the MAXIMA balloon-borne experiment. MAXIMA is sensitive to CMB fluctuations on angular scales from 10 arcmin to 5 degrees. The instrument uses a 16 element bolometric array with 3 frequency bands centered at 150, 240, and 410 GHz. An angular power spectrum of the CMB anisotropy has been obtained from the data of the first flight, MAXIMA-1, which shows a peak at ~220 of 78+/-6 μK and an amplitude varying between 40 μK and 50 μK from 400<<785 [1]. During a second flight (MAXIMA-2), in 1999, we mapped an additional 225 square degree region of the sky, nearly twice the area of MAXIMA-1. Data from MAXIMA-1 are consistent with adiabatic inflationary models with the total energy density, Ω=1.0-0.3+0.15, the total baryon density, Ωbh2=0.03+/-0.01, and the spectral index of the initial power spectrum, ns=1.08+/-0.1 [2]. Limits are quoted at the 95% confidence level. Data from MAXIMA have been combined with those from LSS observations, SNIa observations, COBE, and BOOMERanG, and have been used for cosmological parameter estimation [3]. MAXIMA data can be obtained at http://cfpa.berkeley.edu/maxima. .

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