X-ray cavities from isolated gal. to clusters : J/ApJS/227/31


Authors : Shin J. orcid , Woo J.-H., Mulchaey J.S. (hide) , Woo J.-H., Mulchaey J.S. et..al

Bibcode : 2016ApJS..227...31S (ADS) (Simbad) (Objects) (hide)

CDS Keywords : X-ray sources; Clusters, galaxy; Redshifts
UAT : X-ray sources, Galaxy clusters, Redshifted

Observation (OC)

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Inserted into VizieR : 09-Feb-2017
Last modification : 06-Dec-2017

A systematic search for X-ray cavities in galaxy clusters, groups, and elliptical galaxies. (2016)

Keywords : X-rays galaxies: clusters

Abstract:We perform a comprehensive study of X-ray cavities using a large sample of X-ray targets selected from the Chandra archive. The sample is selected to cover a large dynamic range including galaxy clusters, groups, and individual galaxies. Using {beta}-modeling and unsharp masking techniques, we investigate the presence of X-ray cavities for 133 targets that have sufficient X-ray photons for analysis. We detect 148 X-ray cavities from 69 targets and measure their properties, including cavity size, angle, and distance from the center of the diffuse X-ray gas. We confirm the strong correlation between cavity size and distance from the X-ray center similar to previous studies. We find that the detection rates of X-ray cavities are similar among ...(more)
Abstract: (hide)
To search X-ray cavities, we used available Chandra X-ray images, which provide high spatial resolution (PSF FWHM ~0.5" at the aim point). We considered sources in the Chandra archive in one of three categories, namely, "normal galaxies", "cluster of galaxies", and "active galaxies and quasar". For our cavity study, we used a final sample of 133 targets based on a consistent analysis of X-ray photon counts.

  • B/chandra : The Chandra Archive Log (CXC, 1999-2014)

                
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