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Origin of the Cometary Structure of the HVCs: 3D-MHD Numerical Simulations
SANTILLAN ALFREDO,FRANCO JOSE,KIM JONGSOO The Korean Astronomical Society 2001 Journal of The Korean Astronomical Society Vol.34 No.4
Here were continue the MHD study started by Santillan et al (1999) for the interaction of high-velocity clouds (HVCs) with the magnetized thick gaseous disk of our Galaxy. We use the MHD code ZEUS-3D and perform 3D-numerical simulations of this interaction, and study the formation of head-tail structures in HVCs. Our results show that clouds located above 2 kpc from mindplane present velocity and column density gradients with a cometary structure that is similar to those observed in 21 cm emission
INTERACTION OF HIGH VELOCITY CLOUDS WITH MAGNETIZED DISKS: THREE-DIMENSIONAL NUMERICAL SIMULATIONS
SANTILLAN ALFREDO,FRANCO JOSE,KIM JONGSOO The Korean Astronomical Society 2004 Journal of The Korean Astronomical Society Vol.37 No.4
High-velocity clouds are flows of neutral hydrogen, located at high galactic latitudes, with large velocities ($[VLSR]{\ge} 100 km/s$) that do not match a simple model of circular rotation for our Galaxy. Numerical simulations have been performed for the last 20 years to study the details of their evolution, and their possible interaction with the Galactic disk. Here we present a brief review of the models that have been already published, and describe newly performed three-dimensional magnetohydrodynamic simulations.
INTERACTION OF HIGH VELOCITY CLOUDS WITH MAGNETIZED DISKS: THREE-DIMENSIONAL NUMERICAL SIMULATIONS
ALFREDO SANTILLAN,JOSE FRANCO,JONGSOO KIM 한국천문학회 2004 Journal of The Korean Astronomical Society Vol.37 No.5
High-velocity clouds are ows of neutral hydrogen, located at high galactic latitudes, with largevelocities (j VLSR j 100 km/s) that do not match a simple model of circular rotation for our Galaxy.Numerical simulations have been performed for the last 20 years to study the details of their evolution,and their possible interaction with the Galactic disk. Here we present a brief review of the models thathave been already published, and describe newly performed three-dimensional magnetohydrodynamicsimulations.