Computer Science
Scientific paper
Jul 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007hst..prop11194c&link_type=abstract
HST Proposal ID #11194. Cycle 16
Computer Science
Scientific paper
Our comparison of the distribution of baryons stars and gas and mass from weak lensing in the "Bullet" Cluster has recently yielded concrete evidence for dark matter independent of basic assumptions regarding the nature of the gravitational force. The one incomplete aspect of the argument relates to potential, although highly unlikely, coincidences special alignments along the line of sight, and/or fortuitious canceling in non-standard gravitational models that can always be invoked against results derived from the study of one object. Therefore, we proprose to complete this line of investitgation by increasing the size of our sample with obsevations of an additional cluster. Here we propose to obtain HST WFPC2 imaging mosaics around the cores of the cluster to detect at high significance if the weak gravitational lensing mass peaks are routinely displaced from the X-ray plasma clouds and aligned with the galaxy concentrations in interacting clusters. With a relatively modest allocation of time, we seek to complete a significant step toward the eventual resolution of the dark matter question.;
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