Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-03-03
ApJ. 501 (1998) 473-477
Astronomy and Astrophysics
Astrophysics
12 pages, LaTeX(aaspp4); accepted for publication in The Astrophysical Journal
Scientific paper
10.1086/305835
We discuss how inhomogeneities of the universe affect observations of the gravitational lensing; (1) the bending angle, (2) the lensing statistics and (3) the time delay. In order to take account of the inhomogeneities, the Dyer-Roeder distance is used, which includes a parameter representing the clumpiness of the matter along the line of sight. It is shown analytically that all three combinations of distances appearing in the above observations (1)-(3) are monotonic with respect to the clumpiness in general, for any given set of the density parameter, cosmological constant and redshifts of the lens and the source. Some implications of this result for the observation are presented; the clumpiness decreases both the bending angle and the lensing event rate, while it increases the time delay. We also discuss cosmological tests using the gravitational lensing in the clumpy universe.
No associations
LandOfFree
Observation of Gravitational Lensing in the Clumpy Universe 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 Observation of Gravitational Lensing in the Clumpy Universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observation of Gravitational Lensing in the Clumpy Universe will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-720602