Large-scale homogeneity of the Universe measured by the microwave background

@article{Mandolesi1986LargescaleHO,
  title={Large-scale homogeneity of the Universe measured by the microwave background},
  author={Nazzareno Mandolesi and Pier Ugo Calzolari and Stefano Cortiglioni and F. Delpino and Giorgio Sironi and P. Inzani and G. Deamici and J-E. Solheim and Lars Berger and Robert B. Partridge and P. L. Martenis and C. H. Sangree and Roland Harvey},
  journal={Nature},
  year={1986},
  volume={319},
  pages={751-753}
}
The isotropy of the cosmic-microwave background is a measure of the homogeneity of the Universe at the epoch of last scattering, conventionally taken to be the epoch of recombination of the primeval plasma at a redshift zs ∼1,000. Here we report measurements of the isotropy at a wavelength of 3 cm. At the 95% confidence level, our results restrict departures from isotropy to < 5–7×10−4 on angular scales of ∼2−10°. The angular scale of our observations is of particular cosmological significance… Expand
14 Citations
The Imprint of Large Scale Structure on the Cosmic Background Radiation
Searches for small scale anisotropies in the cosmic background radiation provide unique information about the large scale distribution of matter at early epochs. This paper reviews recentExpand
Conjecture of the Contribution of the Zero Point Energy to the Universe Expansion
The universe in expansion and with flat curvature requires to fits the cosmological parameters, like critical energy density. This is generated from the relation of kinetic versus gravity, and hasExpand
Sensitive measurement of fluctuations in the cosmic microwave background
Extensive high sensitivity observations of the cosmic microwave background have been made on an angular scale of 8° covering a substantial fraction of the northern sky. An observed anisotropy in theExpand
The Microwave Background Radiation: Recent Advances and New Problems
The substantially improved intensity measurements at wavelengths longward of the intensity peak of the microwave background are fully consistent with a Planck spectrum. The most precise data disagreeExpand
The angular distribution of the cosmic background radiation
The cosmic background radiation is thermal radiation with a temperature of 2.75 K still present throughout the Universe, a relic of its hot, big bang, initial phase. Detailed studies of thisExpand
Cosmic microwave background anisotropy
TLDR
Observation and theory are coming tantalizingly close to measuring the elusive anisotropy, or to revealing that the authors' ideas about the origin of galaxies and large-scale structures are in need of substantial revision. Expand
CMB Telescopes and Optical Systems
The cosmic microwave background radiation (CMB) is now firmly established as a fundamental and essential probe of the geometry, constituents, and birth of the Universe. The CMB is a potent observableExpand
A ballon-borne experiment for observations of the near-infrared cosmological background
SummaryWe present here a ballon-borne experiment to measure the near-infrared cosmological background in the (1÷5) μm range. The instrument, a liquid helium cooled telescope (250 mm,F/2), was builtExpand
The Cosmic Microwave Background
This review summarizes recent observational work on the cosmic microwave background, or 3 K radiation. Recent measurements of its spectrum and large-scale angular distribution are described, as wellExpand
The Cosmic Microwave Background Radiation and the Dog in the Night
Recent observational results on both the spectrum and the angular distribution of the cosmic microwave background radiation are reviewed, with special emphasis on null results or upper limits. “IsExpand
...
1
2
...

References

SHOWING 1-7 OF 7 REFERENCES
Fluctuations in the microwave background at intermediate angular scales
An important distortion of the dipole pattern in the microwave background has been detected by two groups (Fabbri, Melchiorri, Guidi, and Natale; Boughn, Cheng, and Wilkinson). Peebles has suggestedExpand
New limits on small-scale angular fluctuations in the cosmic microwave background
Using the 31 GHz dual-channel receiver at the 11 meter NRAO telescope at Kitt Peak, we have searched two regions at delta=80/sup 0/ for fluctuations in the cosmic microwave background. No significantExpand
The Large-Scale Structure of the Universe
Opinions on the large-scale structure of the early universe range widely from primeval chaos to a well-ordered mass distribution. P.J.E. Peebles argues that the evolution proceeded from a nearlyExpand
Fine-Scale Anisotropy of the Microwave Background: an Upper Limit at a = 3.5 Millimeters
Using the 36-foot NRAO telescope at lambda = 3.5 mm, an upper limit of 0.0043 deg K was set, with 90 percent confidence, on the fluctuations in the cosmic microwave background. The angular scale ofExpand
Large-Scale Anisotropy in the 2.7-K Radiation with a Balloon-Borne Maser Radiometer at 24.5 GHz
Observations with a high-sensitivity radiometer, covering 80% of the sky, give substantially improved measurements of anisotropy in the 2.7-K radiation. The dipole effect is (T/sub x/, T/sub y/,Expand
3 mm Anisotropy Measurement: On the Quadrupole Component in the Cosmic Background Radiation
LBL-15223 c Preprint LB Lawrence Berkeley Laboratory UNIVERSITY OF CALIFORNIA Physics, Computer S c i e n c e ^ Mathematics Division JAN 11 1983 Submitted to Physical Review Letters LIBKAK'Y A N DExpand