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7 papers · 1 filter
Strong lensing constraints on the properties of cluster galaxies
Liliya L. R. Williams, Prasenjit Saha
A recently discovered quadruply-imaged QSO, SDSS J1004+4112 (Inada et al. 2003; Oguri et al. 2004) in the core of a galaxy cluster has an unprecedented image separation of…
The phase-space density distribution of dark matter halos
Liliya L. R. Williams, Crystal Austin, Eric Barnes +2
High resolution N-body simulations have all but converged on a common empirical form for the shape of the density profiles of halos, but the full understanding of the underlying ph…
Parametrization of Dark Energy Equation of State
Vinod B. Johri
A comparative study of various parametrizations of the dark energy equation of state and its variation with the redshift is made. Astrophysical constraints from 'integrated…
A Taxonomy of Extended Radio Sources in Clusters of Galaxies
Joshua C. Kempner, Elizabeth L. Blanton, Tracy E. Clarke +3
At the request of the conference attendees, we have compiled a classification of extended radio sources in clusters. These range from scales of tens of parsecs to over a megaparsec…
Acceleration of ULtra High Energy Cosmic Rays: Cosmic Zevatrons?
T. W. Jones
In this lecture I outline some of the underlying physics issues associated with accelerators plausibly capable of explaining the UHECRs up to ZeV energies. I concentrate on the con…
A High-Resolution Study of Eta Carinae's Outer Ejecta
Kerstin Weis, Michael F. Corcoran, Kris Davidson +1
Eta Carinae is a very luminous and unstable evolved star. Outflowing material ejected during the star's giant eruption in 1843 surrounds it as a nebula which consists of an inner b…