Sign on
ADS Classic is now deprecated. It will be completely retired in October 2019. Please redirect your searches to the new ADS modern form or the classic form. More info can be found on our blog.

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (45) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (3)
· Reads History
·
· Translate This Page
Title:
Measurements of anisotropy in the cosmic microwave background radiation at degree angular scales near the stars Sigma Herculis and IOTA Draconis
Authors:
Clapp, A. C.; Devlin, M. J.; Gundersen, J. O.; Hagmann, C. A.; Hristov, V. V.; Lange, A. E.; Lim, M.; Lubin, P. M.; Mauskopf, P. D.; Meinhold, P. R.; Richards, P. L.; Smoot, G. F.; Tanaka, S. T.; Timbie, P. T.; Wuensche, C. A.
Affiliation:
AA(University of California at Berkeley, Berkeley, CA, US), AB(University of California at Berkeley, Berkeley, CA, US), AC(University of California at Santa Barbara, Santa Barbara, CA, US), AD(University of California at Santa Barbara, Santa Barbara, CA, US), AE(University of California at Berkeley, Berkeley, CA, US), AF(University of California at Berkeley, Berkeley, CA, US), AG(University of California at Santa Barbara, Santa Barbara, CA, US), AH(University of California at Santa Barbara, Santa Barbara, CA, US), AI(University of California at Berkeley, Berkeley, CA, US), AJ(University of California at Berkeley, Berkeley, CA, US)
Publication:
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 433, no. 2, p. L57-L60 (ApJL Homepage)
Publication Date:
10/1994
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
Anisotropy, Background Radiation, Big Bang Cosmology, Radio Astronomy, Relic Radiation, Centimeter Waves, Cosmic Dust, Decimeter Waves, Radio Spectra, Superhigh Frequencies, Ultrahigh Frequencies
DOI:
10.1086/187547
Bibliographic Code:
1994ApJ...433L..57C

Abstract

We present results from two four-frequency observations centered near the stars Sigma Herculis and Iota Draconis during the fourth flight of the Millimeter-wave Anisotropy eXperiment (MAX). The observations were made of 6 deg x 0.6 deg strips of the sky with a 1.4 deg peak to peak sinusoidal chop in all bands. The full width at half maximum (FWHM) beam sizes were calculated 0.55 deg +/- 0.05 deg at 3.5/cm and a 0.75 deg +/- 0.05 deg at 6, 9, and 14/cm. Significant correlated structures were observed at 3.5, 6, and 9/cm. The spectra of these signals are inconsistent with thermal emission from known interstellar dust populations. The extrapolated amplitudes of synchrotron and free-free emission are too small to account for the amplitude of the observed structures. If the observed structures are attributed to cosmic microwave background (CMB) anisotropy with a Gaussian autocorrelation function and a coherence angle of 25 min, then the most probable values at Delta T/TCMB = 3.1 +1.7-1.3x 10-5 for the Sigma Herculis scan, and Delta T/TCMB = 3.3+1.1-1.1 x 10-5 for the Iota Draconis scan (95% confidence upper, lower limits).

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences



More Article Retrieval Options

HELP for Article Retrieval


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)


Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints