The Hubble Constant from (CLASS) Gravitational Lenses

Details The Hubble Constant from (CLASS) Gravitational Lenses The Hubble Constant from (CLASS) Gravitational Lenses

2001-01-19

arxiv.org/abs/astro-ph/0101352v1

Astronomy and Astrophysics

Astrophysics

4 pages, no figures; based on a talk given at the "The OzLenz Workshop" in Melbourne (Au), 2000 dec. 4-6; to appear in PASA

Scientific paper

10.1071/AS01024

One of the main objectives of the Cosmic Lens All-Sky Survey (CLASS) collaboration has been to find gravitational lens (GL) systems at radio wavelengths that are suitable for the determination of time delays between image pairs. The survey is now near completion and at least 18 GL systems have been found. Here, I will discuss our efforts to measure time delays from several of these systems with the ultimate aim of constraining the Hubble Constant (H0). Thus far three CLASS GL systems (i.e. B0218+357, B1600+434 and B1608+656) have yielded measurements of time delays, from which values of H0=60-70 km/s/Mpc have been estimated. Although most GL systems give similar values of H0, statistical and systematic uncertainties are still considerable. To reduce these uncertainties, I will shortly mention two monitoring programs that we are undertaking to (re)measure time delays in 15 CLASS GL systems and address several important issues for the near future.

Affiliated with

Also associated with

No associations

Rating

The Hubble Constant from (CLASS) Gravitational Lenses 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 The Hubble Constant from (CLASS) Gravitational Lenses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Hubble Constant from (CLASS) Gravitational Lenses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-72312