Mathematics – Logic
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008head...10.2628l&link_type=abstract
American Astronomical Society, HEAD meeting #10, #26.28
Mathematics
Logic
Scientific paper
We present three-dimensional relativistic MHD simulations of magnetically dominated flows as a model for extra-galactic jets. Similar to many of the laboratory plasma systems, current driven instabilities are crucial to jet dynamics, though relativistic velocities and expanding boundaries can significantly change the stability properties. In addition, the interaction between such flows with their environment, e.g., the intra-cluster medium, will be studied. 3-D instabilties that lead to flux conversion seem to be necessary for both the jet stability and the radio lobe formation. Simulations are compared with observations of X-ray cavities in clusters and the possibility of lobes being magnetically dominated on global scales will be discussed. We incorporate such models as AGNs in large scale cosmological cluster formation simulations to study the AGN feedbacks on structure formation. The morphology and properties of jet-lobe systems in realistic cluster simulations will be presented.
Li Hui
Li Shiheng
Nakamura Maho
Xu Haibin
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