The frequently observed association between giant radio halos (RHs) and merging galaxy clusters has driven present theoretical models of non-thermal emission from galaxy clusters, which are based on the idea that the energy dissipated during cluster-cluster mergers could power the formation of RHs. To quantitatively test the merger-halo connection, we present the first statistical study based on deep radio data and X-ray observations of a complete X-ray-selected sample of galaxy clusters with X-ray luminosity >=5 × 1044 erg s-1 and redshift 0.2
Cassano R., Ettori S., Giacintucci S., Brunetti G., Markevitch M., Venturi T., et al. (2010). On the Connection Between Giant Radio Halos and Cluster Mergers. THE ASTROPHYSICAL JOURNAL LETTERS, 721, L82-L85 [10.1088/2041-8205/721/2/L82].
On the Connection Between Giant Radio Halos and Cluster Mergers
GITTI, MYRIAM
2010
Abstract
The frequently observed association between giant radio halos (RHs) and merging galaxy clusters has driven present theoretical models of non-thermal emission from galaxy clusters, which are based on the idea that the energy dissipated during cluster-cluster mergers could power the formation of RHs. To quantitatively test the merger-halo connection, we present the first statistical study based on deep radio data and X-ray observations of a complete X-ray-selected sample of galaxy clusters with X-ray luminosity >=5 × 1044 erg s-1 and redshift 0.2I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
