PROBING THE OFF-STATE OF CLUSTER GIANT RADIO HALOS
نویسندگان
چکیده
منابع مشابه
Diffuse Cluster-wide Radio Halos
We will discuss the properties and origins of halos and relics including estimates of the cluster magnetic fields, and present results for a few recently discovered halos and relics. The electrons in the suprathermal high energy tail of the thermal gas distribution are likely to provide the seed particles for acceleration through mergers and turbulences to relativistic energies. These relativis...
متن کاملThe Radio Luminosity Function of Cluster Radio Halos
A significant fraction of galaxy clusters exhibits cluster wide radio halos. We give a simple prediction of the local and higher redshift radio halo luminosity function (RHLF) on the basis of (i) an observed and a theoretical X-ray cluster luminosity function (XCLF) (ii) the observed radio–X-ray luminosity correlation (RXLC) of galaxy clusters with radio halos (iii) an assumed fraction of frh ≈...
متن کاملDeep images of cluster radio halos
New radio data are presented for the clusters A401, A545, A754, A1914, A2219 and A2390, where the presence of diffuse radio emission was suggested from the images of the NRAO VLA Sky Survey. Sensitive images of these clusters, obtained with the Very Large Array (VLA) at 20 cm confirm the existence of the diffuse sources and allow us to derive their fluxes and intrinsic parameters. The correlati...
متن کاملA morphological comparison between giant radio halos and radio mini–halos in galaxy clusters
In this letter we present a morphological comparison between giant radio halos and radio mini-halos in galaxy clusters based on radio–X-ray luminosity, P1.4-LX, and radio luminosity-size, P1.4-RH, correlations. We report evidence that P1.4-LX and P1.4-RH trends may also exist for mini–halos: mini–halo clusters share the same region of giant halo clusters in the (P1.4, LX) plane, whereas they ar...
متن کاملStatistics of Giant Radio Halos from Electron Reacceleration Models
The most important evidence of non–thermal phenomena in galaxy clusters comes from Giant Radio Halos (GRHs), spectacular synchrotron radio sources extended over >Mpc scales, detected in the central regions of a growing number of massive galaxy clusters. A promising possibility to explain these sources is given by in situ stochastic reacceleration of relativistic electrons by turbulence generate...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2011
ISSN: 2041-8205,2041-8213
DOI: 10.1088/2041-8205/740/1/l28