scholarly journals The Anisotropy of the Microwave Background tol= 3500: Deep Field Observations with the Cosmic Background Imager

2003 ◽  
Vol 591 (2) ◽  
pp. 540-555 ◽  
Author(s):  
B. S. Mason ◽  
T. J. Pearson ◽  
A. C. S. Readhead ◽  
M. C. Shepherd ◽  
J. Sievers ◽  
...  
Keyword(s):  
Field Observations ◽  
Microwave Background ◽  
Cosmic Background ◽  
Cosmic Background Imager

scholarly journals The Cosmic Background Imager

2005 ◽  
Vol 201 ◽  
pp. 23-32
Author(s):  
T. J. Pearson ◽  
B. S. Mason ◽  
S. Padin ◽  
A. C. S. Readhead ◽  
M. C. Shepherd ◽  
...  
Keyword(s):  
Background Radiation ◽  
Clusters Of Galaxies ◽  
Microwave Background ◽  
Owens Valley ◽  
Radio Observatory ◽  
San Pedro ◽  
Cosmic Background ◽  
Microwave Background Radiation ◽  
Cmb Fluctuations ◽  
Cosmic Background Imager

The Cosmic Background Imager (CBI) is an instrument designed to make images of the cosmic microwave background radiation and to measure its statistical properties on angular scales from about 3 arc minutes to one degree (spherical harmonic scales from l ˜ 4250 down to l ˜ 400). The CBI is a 13-element interferometer mounted on a 6 meter platform operating in ten 1-GHz frequency bands from 26 GHz to 36 GHz. The instantaneous field of view of the instrument is 45 arcmin (FWHM) and its resolution ranges from 3 to 10 arcmin; larger fields can be imaged by mosaicing. At this frequency and resolution, the primary foreground is due to discrete extragalactic sources, which are monitored at the Owens Valley Radio Observatory and subtracted from the CBI visibility measurements.The instrument has been making observations since late 1999 of both primordial CMB fluctuations and the Sunyaev-Zeldovich effect in clusters of galaxies from its site at an altitude of 5080 meters near San Pedro de Atacama, in northern Chile. Observations will continue until August 2001 or later. We present preliminary results from the first few months of observations.

scholarly journals The Anisotropy of the Microwave Background tol= 3500: Mosaic Observations with the Cosmic Background Imager

2003 ◽  
Vol 591 (2) ◽  
pp. 556-574 ◽  
Author(s):  
T. J. Pearson ◽  
B. S. Mason ◽  
A. C. S. Readhead ◽  
M. C. Shepherd ◽  
J. L. Sievers ◽  
...  
Keyword(s):  
Microwave Background ◽  
Cosmic Background ◽  
Cosmic Background Imager

scholarly journals Observation and Interpretation of the Cosmic Microwave Background Spectrum

1992 ◽  
Vol 9 ◽  
pp. 275-279 ◽  
Author(s):  
J. C. Mather
Keyword(s):  
Cosmic Microwave Background ◽  
Background Radiation ◽  
Far Infrared ◽  
Cosmic Background Radiation ◽  
Microwave Measurements ◽  
Microwave Background ◽  
Background Spectrum ◽  
Cosmic Background

AbstractRecent precise observations of the microwave and submillimeter cosmic background radiation are summarized, including rocket experiments, the FIRAS (Far InfraRed Absolute Spectrophotometer) on the COBE, CN results, and microwave measurements. Theoretical implications are summarized.

scholarly journals The Angular Distribution of the Cosmic Background Radiation

1986 ◽  
Vol 7 ◽  
pp. 307-319
Author(s):  
R. B. Partridge
Keyword(s):  
Angular Distribution ◽  
Early Universe ◽  
Background Radiation ◽  
Cosmic Background Radiation ◽  
Current Status ◽  
Microwave Background ◽  
Cosmic Background ◽  
Dipole Component ◽  
Upper Limits ◽  
Microwave Background Radiation

AbstractCrucial cosmological information is provided by the observed angular distribution (isotropy) of the cosmic microwave background radiation. This report treats the current status of searches for anisotroples in this radiation on all angular scales from 180° (the dipole component) to 6″. With the exception of the dipole component, only upper limits (at ~ 10-4 in ΔT/T) are available, yet these upper limits have played an important role in refining models of the early Universe and of the origin of structure within it.

scholarly journals New Limits to the Small Scale Fluctuations in the Cosmic Background Radiation

1983 ◽  
Vol 104 ◽  
pp. 125-126
Author(s):  
K. I. Kellermann ◽  
E. B. Fomalont ◽  
J. V. Wall
Keyword(s):  
Cosmic Microwave Background ◽  
Radio Source ◽  
Flux Density ◽  
Background Radiation ◽  
Cosmic Background Radiation ◽  
Small Region ◽  
Small Scale ◽  
Microwave Background ◽  
Cosmic Background ◽  
Microwave Background Radiation

The VLA has been used at 4.9 GHz to observe a small region of sky in order to extend the radio source count to low flux density (Fomalont et al., these proceedings) and to look for small scale fluctuations in the 2.7 K cosmic microwave background radiation.

A preliminary measurement of the cosmic microwave background spectrum by the Cosmic Background Explorer (COBE) satellite

1990 ◽  
Vol 354 ◽  
pp. L37 ◽  
Author(s):  
J. C. Mather ◽  
E. S. Cheng ◽  
R. E., Jr. Eplee ◽  
R. B. Isaacman ◽  
S. S. Meyer ◽  
...  
Keyword(s):  
Cosmic Microwave Background ◽  
Microwave Background ◽  
Background Spectrum ◽  
Preliminary Measurement ◽  
Cosmic Background

scholarly journals Observations of Galactic star-forming regions with the Cosmic Background Imager at 31 GHz

2015 ◽  
Vol 453 (2) ◽  
pp. 2082-2093 ◽  
Author(s):  
C. Demetroullas ◽  
C. Dickinson ◽  
D. Stamadianos ◽  
S. E. Harper ◽  
K. Cleary ◽  
...  
Keyword(s):  
Star Forming ◽  
Star Forming Regions ◽  
Cosmic Background ◽  
Cosmic Background Imager

Ionization History of the Cosmic Plasma in the Light of the Recent Cosmic Background Imager and FuturePlanckData

2003 ◽  
Vol 586 (2) ◽  
pp. 709-717 ◽  
Author(s):  
A. G. Doroshkevich ◽  
I. P. Naselsky ◽  
P. D. Naselsky ◽  
I. D. Novikov
Keyword(s):  
Cosmic Plasma ◽  
Cosmic Background ◽  
History Of ◽  
Cosmic Background Imager
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