TY - JOUR
T1 - Mapping the cosmic microwave background anisotropy
T2 - The first flight of the QMAP experiment
AU - Devlin, Mark J.
AU - De Oliveira-Costa, Angelica
AU - Herbig, Tom
AU - Miller, Amber D.
AU - Netterfield, C. Barth
AU - Page, Lyman A.
AU - Tegmark, Max
PY - 1998/12/20
Y1 - 1998/12/20
N2 - We report on the first flight of the balloon-borne QMAP experiment. The experiment is designed to make a map of the cosmic microwave background (CMB) anisotropy on angular scales from 0°.70 to several degrees. Using the map, we determine the angular power spectrum of the anisotropy in multipole bands from l ∼ 40 to l ∼ 140. The results are consistent with the SK (from Saskatoon, Saskatchewan, Canada) measurements. The frequency spectral index (measured at low l) is consistent with that of CMB and inconsistent with either Galactic synchrotron or free-free emission. The instrument, measurement, analysis of the angular power spectrum, and possible systematic errors are discussed.
AB - We report on the first flight of the balloon-borne QMAP experiment. The experiment is designed to make a map of the cosmic microwave background (CMB) anisotropy on angular scales from 0°.70 to several degrees. Using the map, we determine the angular power spectrum of the anisotropy in multipole bands from l ∼ 40 to l ∼ 140. The results are consistent with the SK (from Saskatoon, Saskatchewan, Canada) measurements. The frequency spectral index (measured at low l) is consistent with that of CMB and inconsistent with either Galactic synchrotron or free-free emission. The instrument, measurement, analysis of the angular power spectrum, and possible systematic errors are discussed.
KW - Cosmic microwave background
KW - Cosmology: Observations
UR - http://www.scopus.com/inward/record.url?scp=0032553786&partnerID=8YFLogxK
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U2 - 10.1086/311769
DO - 10.1086/311769
M3 - Article
AN - SCOPUS:0032553786
SN - 0004-637X
VL - 509
SP - L69-L72
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2 PART 2
ER -