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4-Year COBE DMR Cosmic Microwave Background Observations: Maps and Basic Results
C. L. Bennett, A. Banday, K. M. Gorski +7
The cosmic microwave background radiation provides unique constraints on cosmological models. In this Letter we present a summary of the spatial properties of the cosmic microwave…
Calibration and Systematic Error Analysis For the COBE-DMR Four-Year Sky Maps
A. Kogut, A. J. Banday, C. L. Bennett +8
The Differential Microwave Radiometers (DMR) instrument aboard the Cosmic Background Explorer (COBE) has mapped the full microwave sky to mean sensitivity 26 uK per 7 deg field of…
RMS Anisotropy in the COBE-DMR Four-Year Sky Maps
A. J. Banday, K. M. Gorski, C. L. Bennett +5
The sky-RMS is the simplest model-independent characterization of a cosmological anisotropy signal. The RMS temperature fluctuations determined from the -DMR four-year sky ma…
Non-cosmological Signal Contributions to the COBE-DMR Four-Year Sky Maps
A. J. Banday, K. M. Gorski, C. L. Bennett +3
We limit the possible contributions from non-cosmological sources to the COBE-DMR four-year sky maps. The DMR data are cross-correlated with maps of rich clusters, extragalactic IR…
Power Spectrum of Primordial Inhomogeneity Determined from the 4-Year COBE DMR Sky Maps
K. M. Gorski, A. J. Banday, C. L. Bennett +4
Fourier analysis and power spectrum estimation of the cosmic microwave background anisotropy on an incompletely sampled sky developed by Gorski (1994) has been applied to the high-…
Tests for Non-Gaussian Statistics in the DMR Four-Year Sky Maps
A. Kogut, A. J. Banday, C. L. Bennett +4
We search the high-latitude portion of the COBE Differential Microwave Radiometers (DMR) 4-year sky maps for evidence of a non-Gaussian temperature distribution in the cosmic micro…