Detection of systematic gravitational lens galaxy image alignments - Mapping dark matter in galaxy clusters

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

339

Dark Matter, Galactic Clusters, Gravitational Lenses, Brightness Distribution, Charge Coupled Devices, Faint Objects, Red Shift, Spatial Distribution

Scientific paper

A gravitational lens distorts most background galaxies by stretching along a circle centered on the lens. This systematic alignment of 20-60 faint background galaxy images has been detected, centered on foreground galaxy clusters of high velocity dispersion. The background galaxy population is selected by its extreme blue B-R color. At a limiting surface brightness of 29 B mag/sq arcsec, there are over 30 background galaxies/sq arcmin per mag anywhere in the sky, which is sufficient to map statistically the dark matter distribution in a foreground cluster. The dark matter is apparently correlated (center and radial extent) with the cluster red light, suggestive of a baryonic origin or dissipative coupling. The existence of a high percentage of lens-distorted faint blue galaxies sets a lower limit of approximately 0.9 to this background galaxy population mean redshift.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Detection of systematic gravitational lens galaxy image alignments - Mapping dark matter in galaxy clusters 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 Detection of systematic gravitational lens galaxy image alignments - Mapping dark matter in galaxy clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of systematic gravitational lens galaxy image alignments - Mapping dark matter in galaxy clusters will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1560770

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.