Discovery of diffuse emission in the galaxy cluster A1689

Vacca et al (2011) have used Montage in their investigations of the radio continuum emission in  A1689 through archival observations at 1.2 and 1.4GHz, obtained with the Very Large Array.

Total intensity radio contours of A1689 at 1.2GHz (VLA in DnC configuration) with a FWHM of 30′′ × 30′′. Vacca et al 2011.

They reported the discovery of an extended, diffuse, low-surface brightness radio emission located in the central region of the cluster. They classified the source as a radio halo, given that its physical properties are consistent with extrapolation of the properties of known radio halos.

This entry was posted in astronomy images, galaxies, galaxy clusters, Image mosaic, Image processing, Images, software, VLA and tagged , , , , , , , . Bookmark the permalink.

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