Non-thermal pressure support in X-COP galaxy clusters
نویسندگان
چکیده
منابع مشابه
Non-thermal Phenomena in Galaxy Clusters
The recent evidences of the presence of magnetic fields and relativistic particles in galaxy clusters are reviewed. The existence of μG-level magnetic fields in cluster atmospheres appears well established from the detection of diffuse radio emission and from studies of Rotation Measure. The fact that the diffuse radio emission is not common in clusters favours the hypothesis that the populatio...
متن کاملSpatial features of non-thermal SZ effect in galaxy clusters
We investigate the spatial behaviour of the total comptonization parameter ytot evaluated for a galaxy cluster containing two population of electrons: the thermal population, with energy around some KeV and whose trace is evident in the X-ray emission of the ICM (Intra-Cluster Medium), and the relativistic population, which give rise to the radio halo emission found in several clusters of galax...
متن کاملCosmic Rays and Non-Thermal Emission in Galaxy Clusters
We discuss the origin of thermal and nonthermal phenomena in galaxy clusters. Specifically, we present some expectations for the non-thermal emission (from radio to gamma ray wavelenghts) expected in a model in which secondary electrons are produced via pp collisions in the intracluster medium. We also discuss the possibility to test this cosmic ray model in the light of recent data on radio ha...
متن کاملNon-thermal Hard X-ray Emission in Galaxy Clusters Observed with the Bepposax Pds
We study the X-ray emission in a sample of galaxy clusters using the BeppoSAX PDS instrument in the 20 – 80 keV energy band. We estimate the non-thermal hard X-ray cluster emission (HXR) by modeling the thermal contribution from the cluster gas and the non-thermal contamination from the unobscured AGN in the clusters. We also evaluate the systematic uncertainties due to the background fluctuati...
متن کاملNon Thermal Emission from Galaxy Clusters: Radio Halos
The number of diffuse radio halos in clusters of galaxies has grown in recent years, making it possible to derive statistical properties of these sources and of the hosting clusters. We show that diffuse sources are associated with X-ray luminous clusters which have undergone recent merger processes. The radio and X-ray structures are often similar, and correlations are found between radio and ...
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: Astronomy & Astrophysics
سال: 2019
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201833324