A large-scale cosmic microwave background anisotropy measurement at millimeter and submillimeter wavelengths

Lyman A. Page, Edward S. Cheng, Stephan S. Meyer

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

We report on a balloon-borne experiment to measure the anisotropy of the cosmic microwave background (CMB) radiation at angular scales of ≥4°. The instrument simultaneously measures in four spectral bands centered on 5.6 (1.8), 8.7 (1.1), 15.8 (0.63), and 22.5 (0.44) cm-1 (mm). We present three results: (1) the 95% confidence limit for monochromatic anisotropies is ΔT/T ≤ 1 × 10-4 on angular scales of 10°; (2) the Galactic plane dust emission at / = 42° is consistent with a v2 emissivity law at frequencies above 15 cm-1; below 15 cm-1, we detect excess emission; and (3) atmospheric ozone at an altitude of 35 km may form clumps as large as Δ emissivity/emissivity = 0.002.

Original languageEnglish (US)
Pages (from-to)L1-L4
JournalAstrophysical Journal
Volume355
Issue number1 PART 2
DOIs
StatePublished - May 20 1990
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • Cosmic background radiation
  • Interstellar: grains

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