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A very brief description of LOFAR - the Low Frequency Array
H. Falcke, M. P. van Haarlem, A. G. de Bruyn +28
LOFAR (Low Frequency Array) is an innovative radio telescope optimized for the frequency range 30-240 MHz. The telescope is realized as a phased aperture array without any moving p…
Detection and imaging of atmospheric radio flashes from cosmic ray air showers
H. Falcke, W. D. Apel, A. F. Badea
The nature of ultrahigh-energy cosmic rays (UHECRs) at energies >10^20 eV remains a mystery. They are likely to be of extragalactic origin, but should be absorbed within ~50 Mpc th…
The Star Formation Histories of Galaxies in Distant Clusters
Bianca Poggianti, Ian Smail, Alan Dressler +5
We present a detailed analysis of the spectroscopic catalog of galaxies in 10 distant clusters from Dressler et al. (1999, D99). We investigate the nature of the different spectral…
A Spectroscopic Catalog of 10 Distant Rich Clusters of Galaxies
Alan Dressler, Ian Smail, Bianca Poggianti +4
We present spectroscopic observations of galaxies in the fields of 10 distant clusters for which we have previously presented deep imaging with WFPC2 on board the HST. The clusters…
Evolution since z = 0.5 of the Morphology-Density relation for Clusters of Galaxies
Alan Dressler, Augustus Oemler, Warrick J. Couch +6
Using traditional morphological classifications of galaxies in 10 intermediate-redshift (z~0.5) clusters observed with WFPC-2 on the Hubble Space Telescope, we derive relations bet…
A Catalog of Morphological Types in 10 Distant Rich Clusters of Galaxies
Ian Smail, Alan Dressler, Warrick J. Couch +4
We present catalogs of objects detected in deep images of 11 fields in 10 distant clusters obtained using WFPC-2 on board the Hubble Space Telescope. The clusters span the redshift…