Journal
ASTROPHYSICAL JOURNAL
Volume 545, Issue 1, Pages L5-L9Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/317322
Keywords
cosmic microwave background; cosmology : observations
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We present a map and an angular power spectrum of the anisotropy of the cosmic microwave background (CMB) from the first flight of the Millimeter-wave Anisotropy Experiment Imaging Array (MAXIMA). MAXIMA is a balloon-borne experiment with an array of 16 bolometric photometers operated at 100 mK. MAXIMA observed a 124 deg(2) region of the sky with 10' resolution at frequencies of 150, 240, and 410 GHz. The data were calibrated using in-flight measurements of the CMB dipole anisotropy. A map of the CMB anisotropy was produced from three 150 and one 240 GHz photometer without need for foreground subtractions. Analysis of this CMB map yields a power spectrum for the CMB anisotropy over the range 36 less than or equal to l less than or equal to 785. The spectrum shows a peak with an amplitude of 78 +/- 6 muK at l similar or equal to 220 and an amplitude varying between similar to 40 and similar to 50 muK for 400 less than or similar to l less than or similar to 785.
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