An Arecibo HI 21-cm Absorption Survey of X-ray Rich Clusters

Details An Arecibo HI 21-cm Absorption Survey of X-ray Rich Clusters An Arecibo HI 21-cm Absorption Survey of X-ray Rich Clusters

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20917219h&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #172.19; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the results of a search for cold neutral hydrogen in intra-cluster media of 90 rich, X-ray bright clusters of galaxies. The spectra were taken towards radio-loud galaxies near the cluster center using the 305-m Arecibo Radio Telescope, and utilizing the wide-band spectrometer to ensure that the entire velocity ranges of the infall regions are covered in the observed spectra (i.e., ± 5000 km/s). To minimize the effect of self-generated bandpass ripples, the sources were observed in double-position-switching mode. We have detected several absorption and emission features. Implications of these (and the non detections) will be discussed vis-a-vis CHANDRA and XMM-Newton observations of these clusters. The Arecibo Observatory is part of the National Astronomy and Ionosphere Center, which is operated by Cornell University under a cooperative agreement with the National Science Foundation.

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