Determining the Hubble Constant from Ryle Telescope observations

Details Determining the Hubble Constant from Ryle Telescope observations Determining the Hubble Constant from Ryle Telescope observations

1999-04-13

arxiv.org/abs/astro-ph/9904165v2

Astronomy and Astrophysics

Astrophysics

9 pages, 10 figures. Submitted to MNRAS

Scientific paper

We describe our algorithm for measuring the Hubble constant from Ryle Telescope (RT) interferometric observations of the Sunyaev-Zel'dovich (SZ) effect from a galaxy cluster and observation of the cluster X-ray emission. We analyse the error budget in this method: as well as radio and X-ray random errors, we consider the effects of clumping and temperature differences in the cluster gas, of the kinetic SZ effect, of bremsstrahlung emission at radio wavelengths, of the gravitational lensing of background radio sources and of primary calibration error. Using RT, ASCA and ROSAT observations of the cluster Abell 1413, we find that random errors dominate over systematic ones, and estimate H_0 = 57^{+23}_{-16} km/s/Mpc (1-sigma errors).

Affiliated with

Also associated with

No associations

Rating

Determining the Hubble Constant from Ryle Telescope observations 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 Determining the Hubble Constant from Ryle Telescope observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Determining the Hubble Constant from Ryle Telescope observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-122545