An Upper Limit on the Finescale Anisotropy of the Cosmic Background Radiation at 800-MICRONS

Details An Upper Limit on the Finescale Anisotropy of the Cosmic Background Radiation at 800-MICRONS An Upper Limit on the Finescale Anisotropy of the Cosmic Background Radiation at 800-MICRONS

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.261..705c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 261, NO.4/APR15, P. 705, 1993

Astronomy and Astrophysics

Astronomy

7

Scientific paper

In some models of the early Universe, radiation is reprocessed into the submillimetre and far-infrared by high-redshift dust, without violating COBE limits on the CBR spectrum, but producing secondary anisotropies which should be detectable with ground-based submillimetre telescopes. We describe an attempt to measure these anisotropies at 800 microns using the JCMT. A careful analysis to reduce position-dependent systematics was carried out and we show that, for this experiment, chopping the telescope beam in azimuth rather than RA produces lower systematics. Bayesian likelihood analysis is then used to set an upper limit on CBR fluctuations of {DELTA} T/T <~ 1.46 X 10^-3^ on a coherence scale of 17 arcsec. Data from a similar set of observations made by Kreysa & Chini in 1988 with the IBM 30-m telescope at 1300 microns are reanalysed in the same way to enable a comparison to be made. The results are used to set limits on the generation of cosmic backgrounds from primeval dust.

Affiliated with

Also associated with

No associations

Rating

An Upper Limit on the Finescale Anisotropy of the Cosmic Background Radiation at 800-MICRONS does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with An Upper Limit on the Finescale Anisotropy of the Cosmic Background Radiation at 800-MICRONS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Upper Limit on the Finescale Anisotropy of the Cosmic Background Radiation at 800-MICRONS will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1373609