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

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

doi:10.1086/185724

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

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

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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 language	English (US)
Pages (from-to)	L1-L4
Journal	Astrophysical Journal
Volume	355
Issue number	1 PART 2
DOIs	https://doi.org/10.1086/185724
State	Published - May 20 1990
Externally published	Yes

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Cosmic background radiation
Interstellar: grains

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10.1086/185724

Cite this

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title = "A large-scale cosmic microwave background anisotropy measurement at millimeter and submillimeter wavelengths",

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.",

keywords = "Cosmic background radiation, Interstellar: grains",

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year = "1990",

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doi = "10.1086/185724",

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T1 - A large-scale cosmic microwave background anisotropy measurement at millimeter and submillimeter wavelengths

AU - Page, Lyman A.

AU - Cheng, Edward S.

AU - Meyer, Stephan S.

PY - 1990/5/20

Y1 - 1990/5/20

N2 - 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.

AB - 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.

KW - Cosmic background radiation

KW - Interstellar: grains

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JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 PART 2

ER -

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

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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