TY - JOUR
T1 - A high-resolution map of the cosmic microwave background around the north celestial pole
AU - Tegmark, Max
AU - De Oliveira-Costa, Angélica
AU - Devlin, Marc J.
AU - Barth Netterfield, C.
AU - Page, Lyman
AU - Wollack, Edward J.
N1 - Funding Information:
The authors wish to thank David Wilkinson for helpful comments on the manuscript. Support for this work was provided by NASA through a Hubble Fellowship, HF-01084.01-96A, awarded by the Space Telescope Science Institute, which is operated by AURA, Inc. under NASA contract NAS5-26555, by European Union contract CHRX-CT93-0120, by Deutsche Forschungsgemeinschaft grant SFB-375, by NSF grant PH 89-21378, NASA grants NAGW-2801 and NAGW-1482, a Cottrell Scholar Award of Research Corp, a David Lucile Packard Foundation Fellowship, and an NSF NII grant to L. Page.
PY - 1997
Y1 - 1997
N2 - We present a Wiener-filtered map of the cosmic microwave background (CMB) fluctuations in a cap with 15° diameter, centered at the north celestial pole. The map is based on the 1993-1995 data from the Saskatoon (SK) experiment, with an angular resolution around 1° in the frequency range 27.6-44.1 GHz. The signal-to-noise ratio in the map is of order 2, and some individual hot and cold spots are significant at the 5 σ level. The spatial features are found to be consistent from year to year, which reinforces the conclusion that the SK results are not dominated by residual atmospheric contamination or other noncelestial signals.
AB - We present a Wiener-filtered map of the cosmic microwave background (CMB) fluctuations in a cap with 15° diameter, centered at the north celestial pole. The map is based on the 1993-1995 data from the Saskatoon (SK) experiment, with an angular resolution around 1° in the frequency range 27.6-44.1 GHz. The signal-to-noise ratio in the map is of order 2, and some individual hot and cold spots are significant at the 5 σ level. The spatial features are found to be consistent from year to year, which reinforces the conclusion that the SK results are not dominated by residual atmospheric contamination or other noncelestial signals.
KW - Cosmic microwave background
KW - Methods: data analysis
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U2 - 10.1086/310440
DO - 10.1086/310440
M3 - Article
AN - SCOPUS:0012310390
SN - 0004-637X
VL - 474
SP - L77-L80
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2 PART II
ER -