Weak Lensing by Large-Scale Structure with the FIRST Radio Survey

Details Weak Lensing by Large-Scale Structure with the FIRST Radio Survey Weak Lensing by Large-Scale Structure with the FIRST Radio Survey

1998-10-01

arxiv.org/abs/astro-ph/9810025v1

Astronomy and Astrophysics

Astrophysics

4 LaTeX pages, 1 postscript figure, 1 table, uses conf_iap.sty. To appear in Proc. of the XIVth IAP meeting, "Wide-Field Surve

Scientific paper

The coherent image distortions induced by weak gravitational lensing can be used to measure the power spectrum of density inhomogeneities in the universe. We present our on-going effort to detect this effect with the FIRST radio survey, which currently contains about 400,000 sources over 4,200 square degrees, and thus provides a unique resource for this purpose. We discuss the sensitivity of our measurement in the context of various cosmological models. We then discuss the crucial issue of systematic effects, the most serious of which are source fragmentation, image-noise correlation, and VLA-beam anisotropy. After accounting for these effects, we expect our experiment to yield a detection, or at least a tight upper limit, for the weak lensing power spectrum on 0.2-20 degree scales.

Affiliated with

Also associated with

No associations

Rating

Weak Lensing by Large-Scale Structure with the FIRST Radio Survey 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 Weak Lensing by Large-Scale Structure with the FIRST Radio Survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Weak Lensing by Large-Scale Structure with the FIRST Radio Survey will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-341440