Weak Lensing with the Sloan Digital Sky Survey

Details Weak Lensing with the Sloan Digital Sky Survey Weak Lensing with the Sloan Digital Sky Survey

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.8805s&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #88.05; Bulletin of the American Astronomical Society, Vol. 31, p.980

Physics

Optics

1

Scientific paper

Weak lensing of background galaxies by foreground large scale structure can provide strong constraints on the spectrum and evolution of mass fluctuations in the universe. For identical sky coverage, the statistical uncertainties are similar to those derived from measurements of the cosmic microwave background radiation (CMBR). Combining even a modest weak lensing survey with CMBR measurements can greatly improve measurements of cosmologically interesting parameters (in particular Omega_ Lambda ) over what is possible from each data set individually. Additionally weak lensing studies can be used to study the mass distributions of individual galaxy clusters and samples of galaxies. The primary advantage of the lensing-based studies is that they are direct measurements of mass and do not require assumptions about the dynamical state of the matter. In the case of galaxies, one is able to probe to much larger radii from the centers than is possible spectroscopically. The Sloan Digital Sky Survey (SDSS) will image one quarter of the sky in five bandpasses. The images will reach 23rd magnitude in r' and will include over one hundred million galaxies. The excellent statistics provided by the survey and the undistorted telescope optics make SDSS images well-suited for weak lensing studies. In this poster we will present an overview of the SDSS weak lensing effort. We will discuss the results of our analysis of the early SDSS data including first results for galaxy halo measurements.

Affiliated with

Also associated with

No associations

Rating

Weak Lensing with the Sloan Digital Sky 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 with the Sloan Digital Sky Survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Weak Lensing with the Sloan Digital Sky Survey will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1122295