View : 35 Download: 21
Cluster density profiles as a test of modified gravity
- Cluster density profiles as a test of modified gravity
- Lombriser L.; Schmidt F.; Baldauf T.; Mandelbaum R.; Seljak U.; Smith R.E.
- Ewha Authors
- Uros Seljak
- Issue Date
- Journal Title
- Physical Review D - Particles, Fields, Gravitation and Cosmology
- Physical Review D - Particles, Fields, Gravitation and Cosmology vol. 85, no. 10
- SCI; SCIE; SCOPUS
- Document Type
- We present a new test of gravitational interactions at the r≃(0.2-20)Mpc scale, around the virial radius of dark matter halos measured through cluster-galaxy lensing of maxBCG clusters from the Sloan Digital Sky Survey (SDSS). We employ predictions from self-consistent simulations of f(R) gravity to find an upper bound on the background field amplitude of
<3.5×10 -3 at the 1D-marginalized 95% confidence level. As a model-independent assessment of the constraining power of cluster profiles measured through weak gravitational lensing, we also constrain the amplitude F 0 of a phenomenological modification based on the profile enhancement induced by f(R) gravity when not including effects from the increased cluster abundance in f(R). In both scenarios, dark-matter-only simulations of the concordance model corresponding to
=0 and F 0=0 are consistent with the lensing measurements, i.e., at the 68% and 95% confidence level, respectively. © 2012 American Physical Society.
- Appears in Collections:
- 자연과학대학 > 물리학전공 > Journal papers
- Files in This Item:
Cluster density profiles as a test of modified gravity.pdf(636.71 kB)
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.