Detection of a Small Scale Cosmic Background Anisotropy at 3.6 cm

Details Detection of a Small Scale Cosmic Background Anisotropy at 3.6 cm Detection of a Small Scale Cosmic Background Anisotropy at 3.6 cm

1996-12-18

arxiv.org/abs/astro-ph/9612183v1

Astronomy and Astrophysics

Astrophysics

12 pages +3 figures, submitted to Astronomical Journal

Scientific paper

We report on the detection of a feature with negative radio flux in a sensitive, low resolution observation with the VLA. This morphologically peculiar feature is approximately 25" 65" in size with a peak central amplitude of about -0.25 mK compared to the brightness temperature of the background sky at 3.6 cm. Within about 1' of this microwave decrement, we also found two radio quiet quasars, both at 2.561, with a projected physical separation of about 1 Mpc ($q_o$ = 0.5, h = 0.5), suggestive of a possible galaxy cluster in the region. We are unable to account for this negative source by systematic phase fluctuations within our observations, sidelobe artifacts, or instrumental noise. We discuss possible physical origins of this microwave source, in particular the inverse-Compton scattering of the cosmic microwave background by hot gas in a distant cluster of galaxies.

Affiliated with

Also associated with

No associations

Rating

Detection of a Small Scale Cosmic Background Anisotropy at 3.6 cm 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 Detection of a Small Scale Cosmic Background Anisotropy at 3.6 cm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of a Small Scale Cosmic Background Anisotropy at 3.6 cm will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-37124