Discovery of a Galaxy Cluster Merger in Unexplored Merger Phase-space

Details Discovery of a Galaxy Cluster Merger in Unexplored Merger Phase-space Discovery of a Galaxy Cluster Merger in Unexplored Merger Phase-space

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21922307d&link_type=abstract

American Astronomical Society, AAS Meeting #219, #223.07

Astronomy and Astrophysics

Astronomy

Scientific paper

We present DLSCL J1916.2+2951 (z=0.53), a newly discovered major cluster merger in which the collisional cluster gas has become separated from the collisionless galaxies and dark matter. Our identification of the system as a dissociative merger using only optical, weak-lensing, and Sunyaev-Zel'dovich effect observations shows that these systems can be found independently of X-ray observations. We confirm the post-merger scenario using follow-up observations with Keck, Subaru, Hubble Space Telescope, and Chandra, and constrain the dark matter self-interaction cross-section σDMmDM-1ɟ cm2g-1. The system is observed at least 0.7±0.2 Gyr since first pass-through, thus providing a picture of cluster mergers 2-5 times further progressed than similar systems observed to date. This improved temporal leverage has implications for our understanding of merging clusters and their impact on galaxy evolution.

Affiliated with

Also associated with

No associations

Rating

Discovery of a Galaxy Cluster Merger in Unexplored Merger Phase-space 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 Discovery of a Galaxy Cluster Merger in Unexplored Merger Phase-space, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery of a Galaxy Cluster Merger in Unexplored Merger Phase-space will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1577914