Strong lensing by cluster-sized haloes in dark-energy cosmologies

Details Strong lensing by cluster-sized haloes in dark-energy cosmologies Strong lensing by cluster-sized haloes in dark-energy cosmologies

2004-05-04

arxiv.org/abs/astro-ph/0405070v1

New Astron.Rev. 49 (2005) 111-114

Astronomy and Astrophysics

Astrophysics

10 pages, 6 figures, submitted to A&A

Scientific paper

10.1016/j.newar.2005.01.046

We study the efficiency of numerically simulated galaxy clusters for producing strong gravitational lensing events in different dark-energy cosmologies with constant and time-variable equation of state and we compare it with ``standard'' $\Lambda$CDM and OCDM models. Our main results are that: (1) the expected abundance of gravitational arcs with large length-to-width ratio depends on the equation of state of dark energy at the epoch of formation of the halo; (2) as found in previous studies, the strong lensing cross section of galaxy clusters is very sensitive to dynamical processes like mergers, whose impact however is different for different cosmologies, being stronger for models in which halos are less concentrated. As expected, the largest differences in the lensing optical depth occur at moderate and high redshift.

Affiliated with

Also associated with

No associations

Rating

Strong lensing by cluster-sized haloes in dark-energy cosmologies 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 Strong lensing by cluster-sized haloes in dark-energy cosmologies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Strong lensing by cluster-sized haloes in dark-energy cosmologies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-466714