منابع مشابه
The Evolution of Cluster Substructure
Using Chandra archival data, we have begun a study to quantify the evolution of cluster morphology with redshift. To quantify cluster morphology, we use the power ratio method developed by Buote and Tsai (1995). Power ratios are constructed from moments of the twodimensional gravitational potential and are, therefore, related to a cluster’s dynamical state. Our sample will include around 50 clu...
متن کاملThe Dynamical Evolution of Substructure
The evolution of substructure embedded in non-dissipative dark halos is studied through N-body simulations of isolated systems, both in and out of initial equilibrium, complementing cosmological simulations of the growth of structure. We determine by both analytic calculations and direct analysis of the N-body simulations the relative importance of various dynamical processes acting on the clum...
متن کاملMining significant substructure-substructure pairs in structural associations
Biological and chemical objects in bioinformatics are often linked to structures: proteins and DNAs to their sequences, small-molecule compounds to their chemical structures, and pathways to their network structures. Associations among these objects, such as interactions between proteins and compounds, are of particular interest in the field, and these associations are often given as a graph: t...
متن کاملThe Evolution of Cluster Substructure with Redshift
Using Chandra archival data, we quantify the evolution of cluster morphology with redshift. To quantify cluster morphology, we use the power ratio method developed by Buote and Tsai (1995). Power ratios are constructed from moments of the two-dimensional gravitational potential and are, therefore, related to a cluster’s dynamical state. Our sample will include 40 clusters from the Chandra archi...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 2003
ISSN: 0074-1809
DOI: 10.1017/s007418090020747x