Mathematics – Logic
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..277..309e&link_type=abstract
Tracing the Ancestry of Galaxies (on the land of our ancestors), Proceedings of the International Astronomical Union, IAU Sympos
Mathematics
Logic
Galaxies: Active, Galaxies:Evolution, Cosmology:Large-Scale Structure Of The Universe, X-Rays: Galaxies: Clusters
Scientific paper
Galaxies are found to inhabit a variety of environments. They are often found in pairs, groups, or clusters. Cosmological simulations predict that these clusters are connected on a larger scale by filaments, but because these large scale structures are so vast, and because they are of intermediate density, observational constraints on their properties are difficult to achieve. We find a large-scale filament in the Abell 1763-Abell 1770 superstructure, determine that the star-formation therein is enhanced, and uncover a bent double lobe radio source midway across the filament. From the bend of this AGN'a jets, we probe the density of the surrounding intra-filament medium (IFM), constrained to be between 1-20x10-29 gm/cm3. This density is consistent with direct probes of the IFM as well as theoretical models.
Edwards Louise O. V.
Fadda Dario
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