Microwave Emission at High Galactic Latitudes in the Four-Year DMR Sky Maps
Alan J. Kogut,A. J. Banday,A. J. Banday,Charles L. Bennett,Krzysztof M. Gorski,Krzysztof M. Gorski,Gary Hinshaw,George F. Smoot,Edward L. Wright +8 more
TLDR
In this article, the COBE Differential Microwave Radiometers (DMR) 4 yr sky maps were used to model Galactic microwave emission at high latitudes (|b| > 20°).Abstract:
We use the COBE Differential Microwave Radiometers (DMR) 4 yr sky maps to model Galactic microwave emission at high latitudes (|b| > 20°). Cross-correlation of the DMR maps with Galactic template maps detects fluctuations in the high-latitude microwave sky brightness with the angular variation of the DIRBE far-infrared dust maps and a frequency dependence consistent with a superposition of dust and free-free emission. We find no significant correlations between the DMR maps and various synchrotron templates. On the largest angular scales (e.g., quadrupole), Galactic emission is comparable in amplitude to the anisotropy in the cosmic microwave background (CMB). The CMB quadrupole amplitude, after correction for Galactic emission, has amplitude Qrms = 10.7 μK with random uncertainty 3.6 μK and systematic uncertainty 7.1 μK from uncertainty in our knowledge of Galactic microwave emission.read more
Citations
More filters
Journal ArticleDOI
First year Wilkinson Microwave Anisotropy Probe (WMAP) observations: Preliminary maps and basic results
Charles L. Bennett,Mark Halpern,Gary Hinshaw,N. Jarosik,Alan J. Kogut,Michele Limon,Michele Limon,S. S. Meyer,Lyman A. Page,David N. Spergel,Gregory S. Tucker,Gregory S. Tucker,Gregory S. Tucker,Edward J. Wollack,Edward L. Wright,Cris W. Barnes,M. R. Greason,Robert S. Hill,Eiichiro Komatsu,M. R. Nolta,N. Odegard,Hiranya V. Peiris,Licia Verde,Janet Weiland +23 more
TL;DR: In this paper, the authors present full sky microwave maps in five frequency bands (23 to 94 GHz) from the WMAP first year sky survey, which are consistent with the 7 in. full-width at half-maximum (FWHM) Cosmic Background Explorer (COBE) maps.
Journal ArticleDOI
The Cosmological Constant and Dark Energy
P. J. E. Peebles,Bharat Ratra +1 more
TL;DR: A review of dark energy can be found in this paper, where the authors present the basic physics and astronomy of the subject, reviews the history of ideas, assesses the state of the observational evidence, and comments on recent developments in the search for a fundamental theory.
Journal ArticleDOI
Interstellar dust grains
TL;DR: In this article, the authors survey the observed properties of interstellar dust grains: the wavelength-dependent extinction of starlight, including absorption features, from UV to infrared; optical luminescence; and optical luminance.
Journal ArticleDOI
Non-Gaussianity from inflation: theory and observations
TL;DR: A review of models of inflation and their predictions for the primordial non-Gaussianity in the density perturbations which are thought to be at the origin of structures in the Universe is given in this article.
Journal ArticleDOI
Three-year Wilkinson Microwave Anisotropy Probe (WMAP) observations: temperature analysis
Gary Hinshaw,Michael R. Nolta,Charles L. Bennett,Rachel Bean,Olivier Doré,Olivier Doré,M. R. Greason,Mark Halpern,Robert S. Hill,N. Jarosik,Alan J. Kogut,Eiichiro Komatsu,Michele Limon,N. Odegard,S. S. Meyer,Lyman A. Page,Hiranya V. Peiris,David N. Spergel,Gregory S. Tucker,Licia Verde,Janet L. Weiland,Edward J. Wollack,Edward L. Wright +22 more
TL;DR: In this article, the authors presented new full-sky temperature maps in five frequency bands from 23 to 94 GHz, based on data from the first 3 years of the WMAP sky survey.
References
More filters
Journal ArticleDOI
Four-Year COBE* DMR Cosmic Microwave Background Observations: Maps and Basic Results
Charles L. Bennett,A. Banday,Krzysztof M. Gorski,Gary Hinshaw,P. Jackson,P. Keegstra,Alan J. Kogut,George F. Smoot,David T. Wilkinson,Edward L. Wright +9 more
TL;DR: In this article, the spatial properties of the cosmic microwave background radiation based on the full 4 yr of COBE Differential Microwave Radiometer (DMR) observations, with additional details in a set of companion Letters, are presented.
Journal ArticleDOI
4-Year COBE DMR Cosmic Microwave Background Observations: Maps and Basic Results
Charles L. Bennett,A. J. Banday,K. M. Górski,Gary Hinshaw,P. D. Jackson,P. Keegstra,A. Kogut,George F. Smoot,David T. Wilkinson,Edward L. Wright +9 more
TL;DR: In this paper, a summary of the spatial properties of the cosmic microwave background radiation based on the full 4 years of COBE DMR observations, as detailed in a set of companion Letters, is presented.
Journal ArticleDOI
High-Latitude Galactic Emission in the COBE Differential Microwave Radiometer 2 Year Sky Maps
Journal ArticleDOI
Preliminary spectral observations of the Galaxy with a 7 deg beam by the Cosmic Background Explorer (COBE)
Edward L. Wright,J. C. Mather,Charles L. Bennett,E. S. Cheng,R. A. Shafer,D. J. Fixsen,R. E. Eplee,R. B. Isaacman,S. M. Read,N. W. Boggess,Samuel Gulkis,M. G. Hauser,Michael A. Janssen,T. Kelsall,Philip Lubin,S. S. Meyer,S. H. Moseley,T. L. Murdock,Robert F. Silverberg,G. F. Smoot,Rainer Weiss,David T. Wilkinson +21 more
TL;DR: The FIR absolute spectrophotometer (FIRAS) on the Cosmic Background Explorer (COBE) has carried out the first all-sky spectral line survey in the FIR region, as well as mapping spectra of the Galactic dust distribution at below 100 microns as discussed by the authors.
Journal ArticleDOI
Power spectrum of primordial inhomogeneity determined from the four year COBE DMR sky maps
Krzysztof M. Gorski,Krzysztof M. Gorski,A. J. Banday,A. J. Banday,Charles L. Bennett,Gary Hinshaw,Alan J. Kogut,George F. Smoot,Edward L. Wright +8 more
TL;DR: In this paper, the authors applied Fourier analysis and power spectrum estimation of the cosmic microwave background anisotropy on an incompletely sampled sky developed by Gorski has been applied to the 4 yr COBE DMR 31.5, 53, and 90 GHz sky maps.