Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2009-09-28
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
8 pages, 8 figures, submitted to MNRAS
Scientific paper
It is of great interest to measure the properties of substructures in dark matter halos at galactic and cluster scales. Here we suggest a method to constrain substructure properties using the variance of weak gravitational flexion in a galaxy-galaxy lensing context. We show the effectiveness of flexion variance in measuring substructures in N-body simulations of dark matter halos, and present the expected galaxy-galaxy lensing signals. We show the insensitivity of the method to the overall galaxy halo mass, and predict the method's signal-to-noise for a space-based all-sky survey, showing that the presence of substructure down to 10^9 M_\odot halos can be reliably detected.
Amara Adam
Bacon David J.
Read Justin I.
No associations
LandOfFree
Measuring Dark Matter Substructure with Galaxy-Galaxy Flexion Statistics 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 Measuring Dark Matter Substructure with Galaxy-Galaxy Flexion Statistics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measuring Dark Matter Substructure with Galaxy-Galaxy Flexion Statistics will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-235461