MAXIMA-1: A measurement of the cosmic microwave background anisotropy on angular scales of 10′-5°

S. Hanany, P. Ade, A. Balbi, 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, B. Rabii, P. L. Richards, G. F. Smoot, R. StomporC. D. Winant, J. H.P. Wu

Research output: Contribution to journalArticlepeer-review

1069 Scopus citations


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 deg2 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 ≤ l ≤ 785. The spectrum shows a peak with an amplitude of 78 ± 6 μK at l ≃ 220 and an amplitude varying between ∼40 and ∼50 μK for 400 ≲ l ≲ 785.

Original languageEnglish (US)
Pages (from-to)L5-L9
JournalAstrophysical Journal
Issue number1 PART 2
StatePublished - Dec 10 2000
Externally publishedYes


  • Cosmic microwave background
  • Cosmology: observations

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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