New Cosmic Microwave Background Power Spectrum Constraints from MSAM1
Author(s) -
G. W. Wilson,
L. Knox,
Scott Dodelson,
K. Coble,
E. S. Cheng,
D. A. Cottingham,
D. J. Fixsen,
Alexey Goldin,
C. A. Inman,
M. S. Kowitt,
S. S. Meyer,
Lyman A. Page,
Jason Puchalla,
J. E. Ruhl,
R. F. Silverberg
Publication year - 2000
Publication title -
the astrophysical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.376
H-Index - 489
eISSN - 1538-4357
pISSN - 0004-637X
DOI - 10.1086/308535
Subject(s) - cosmic microwave background , sky , physics , spectral density , astrophysics , amplitude , anisotropy , noise (video) , microwave , astronomy , optics , computer science , telecommunications , image (mathematics) , quantum mechanics , artificial intelligence
We present new cosmic microwave background (CMB) anisotropy results from thecombined analysis of the three flights of the first Medium Scale AnisotropyMeasurement (MSAM1). This balloon-borne bolometric instrument measured about 10square degrees of sky at half-degree resolution in 4 frequency bands from 5.2icm to 20 icm with a high signal-to-noise ratio. Here we present an overview ofour analysis methods, compare the results from the three flights, derive newconstraints on the CMB power spectrum from the combined data and reduce thedata to total-power Wiener-filtered maps of the CMB. A key feature of this newanalysis is a determination of the amplitude of CMB fluctuations at $\ell \sim400$. The analysis technique is described in a companion paper by Knox.Comment: 9 pages, 6 included figure
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