An optical time delay for the double gravitational lens system FBQ 0951+2635

Details An optical time delay for the double gravitational lens system FBQ 0951+2635 An optical time delay for the double gravitational lens system FBQ 0951+2635

2004-09-17

arxiv.org/abs/astro-ph/0409444v1

Astron.Astrophys. 431 (2005) 103-109

Astronomy and Astrophysics

Astrophysics

7 pages, 7 figures. Accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20041432

We present optical R-band light curves of the double gravitationally lensed quasar FBQ 0951+2635 from observations obtained at the Nordic Optical Telescope between March 1999 and June 2001. A time delay of 16 +/- 2 days (1 sigma) is determined from the light curves. New constraints on the lensing geometry are provided by the position and ellipticity of the lensing galaxy. For a (Omega_m, Omega_Lambda) = (0.3, 0.7) cosmology, the time delay yields a Hubble parameter of H_0 = 60^{+9}_{-7} (random, 1 sigma) +/- 2 (systematic) km/s/Mpc for a singular isothermal ellipsoid model and H_0 = 63^{+9}_{-7} (random, 1 sigma) +/- 1 (systematic) km/s/Mpc for a constant mass-to-light ratio model. In both models, the errors are mainly due to the time-delay uncertainties. Non-parametric models yield H_0 = 64^{+9}_{-7} (random, 1 sigma) +/- 14 (systematic) km/s/Mpc.

Affiliated with

Also associated with

No associations

Rating

An optical time delay for the double gravitational lens system FBQ 0951+2635 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 optical time delay for the double gravitational lens system FBQ 0951+2635, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An optical time delay for the double gravitational lens system FBQ 0951+2635 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-304360