Stuttgart 2012 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 10: Poster Numerik
EP 10.2: Poster
Mittwoch, 14. März 2012, 16:30–19:00, Poster.IV
Magnetic fields in galaxy minor mergers — •Annette Geng1, Hanna Kotarba2, Florian Bürzle1, Klaus Dolag2, Federico Stasyszyn2, and Peter Nielaba1 — 1University of Konstanz, Department of Physics, Universitätsstr. 10, 78464 Konstanz, Germany — 2University Observatory Munich, Scheinerstr. 1, 81679 Munich, Germany
We investigate the magnetic field evolution in a series of galaxy mergers with different initial masses and initial magnetic field strengths. The simulations were performed using the N-body/SPH code Gadget including star formation, supernova feedback and magnetic fields. The amplification of a given initial magnetic field within the galaxies and an ambient intergalactic medium (IGM) is investigated focusing on the dependence of the mass ratio, the initial magnetization and the disc orientation of the progenitor galaxies. Furthermore, the evolution of the temperature and the X-ray emission within the merging systems is investigated with respect to the initial magnetization of the progenitor galaxies and the ambient IGM.