Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 13 of 13 for “"intracluster medium"”.
-
Studies of the Structure and Evolution of the Intracluster Medium
Finally, we examine how scaling relations evolve with redshift using a 70 cluster sample over the redshift range 0.18 < z < 1.24. We show that X-ray luminosity and ICM mass evolve more slowly toward higher redshifts than is predicted by self-similar models of cluster formation. Effects of core …
-
SUPPRESSION OF ELECTRON THERMAL CONDUCTION IN THE HIGH β INTRACLUSTER MEDIUM OF GALAXY CLUSTERS
Understanding the thermodynamic state of the hot intracluster medium (ICM) in a galaxy cluster requires a knowledge of the plasma transport processes, especially thermal conduction. The basic physics of thermal conduction in plasmas with ICM-like conditions has yet to be elucidated, however. We use …
-
Fundamental Properties of Galaxy Clusters: A Prelude to Large Scale Sunyaev-Zel'dovich Effect/near-Ir Cluster Surveys
… and the stars and gas that exist within the intracluster space. Constraints on BCG formation and the thermodynamic history of the intracluster medium are presented. Finally, with deep near-IR imaging data, we examine in detail the luminosity function for a smaller cluster sample, which …
-
AGN outflows and the cluster cooling flow conundrum
… the simulation of a pair of outflows in the intracluster medium whilst using classical fluid dynamics. The three simulation chapters involve a single parameter being varied and its impact on jet morphology and the heating process studied. The jet opening angle was found not to impact the …
-
Evolution of Supermassive Black Hole Feedback in Galaxy Clusters
… The outer boundary of a galaxy’s circumgalactic medium (CGM) should be the most sensitive probe of inflowing and outflowing material, but it is difficult to observe. Only in galaxy clusters, where the CGM gets hot enough to glow in X-rays, can the entire baryon cycle be observed– from the rapid …
-
The Impact of realistic galaxy orbits on jellyfish galaxy properties
… move supersonically through the hot, magnetized intracluster medium (ICM) filling the space between galaxies in galaxy clusters, ram pressure stripping (RPS) can remove large fractions of the interstellar and circumgalactic gas of galaxies. This process creates jellyfish galaxies with tails …
-
ON METAL ABUNDANCE AND ENTROPY OF THE ICM: THE TWIN TRACERS OF BARYON EVOLUTION IN GALAXY CLUSTERS
… the main baryonic component of a cluster is the intracluster medium (ICM), the hot and diffuse gas that permeates the space between the galaxies in it. In this Thesis, we present the analysis of XMM-Newton observations of several galaxy clusters to investigate their ICM properties from two …
-
An Analysis of the Stellar Mass Properties of Distant Galaxy Clusters From the Massive and Distant Clusters of WISE Survey (MaDCoWS)
… effect, identifying clusters through their hot intracluster medium (ICM). In this work, I use the complementary Massive and Distant Clusters of WISE (MaDCoWS) infrared-selected survey to measure stellar mass properties of galaxy clusters at high redshift. I present initial measurements of the …
-
The galaxy cluster environments of wide angle tail radio sources
… to their interaction with the hot, X-ray bright intracluster medium (ICM). They have been proven to be good tracers of high redshift clusters where X-ray and optical observations are more difficult. Nonetheless, it has been unclear whether a WATs presence is directly linked to cluster conditions …
-
Simulations of active galactic nucleus feedback in the cores of galaxy clusters
… of the central few kiloparsecs of the intracluster medium (ICM) in cluster cores. I address how jet precession interacts with turbulent motions in the ICM and determine whether it can help regulate accretion and feedback. I find that, while turbulent driving itself enhances the kinetic …
-
Simulating the dynamical evolution of galaxies in group and cluster environments
… simulations of galaxies evolving in a magnetized intracluster medium plasma to isolate the effect of magnetic fields on coronal evolution, as well the effect of orbiting galaxies in amplifying magnetic fields. This work is an important step towards understanding the effect of cluster environments …
-
Multiwavelenght study of cluster mergers and consequences for the radio emission properties of galaxy clusters
… of pre–existing relativistic electrons in the intracluster medium by merger–driven turbulence. • A giant radio halo was found in the massive galaxy cluster A209, which has likely undergone a past major merger and is currently experiencing a new merging process in a direction roughly orthogonal …
-
Exploring Galaxy Clusters and Groups with Cosmological Simulations
… support provided by kinetic motions in the intracluster gas and the effects of non-gravitational physics such as AGN feedback. I also find a significant variation in the scatter about the relations with changing halo mass and redshift, contrary to the assumptions of most observational …