Theoretical astrophysics and plasma physics at RPC

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Distortion of Gravitational-Wave Packets Due to their Self-Gravity

(2007)

Authors:

Bence Kocsis, Abraham Loeb

Grommet: an N-body code for high-resolution simulations of individual galaxies

(2007)

Dynamics of coarse grained dislocation densities from an effective free energy

The Philosophical Magazine A Journal of Theoretical Experimental and Applied Physics Taylor & Francis 87:8-9 (2007) 1185-1199

Authors:

I Groma, G Gy枚rgyi, B Kocsis

Gaseous Haloes: Linking Galaxies to the IGM

Astrophys.J. 653 (2007) 1517-1530

Authors:

F Fraternali, J Binney, T Oosterloo, R Sancisi

Abstract:

In recent years evidence has accumulated that nearby spiral galaxies are surrounded by massive haloes of neutral and ionised gas. These gaseous haloes rotate more slowly than the disks and show inflow motions. They are clearly analogous to the High Velocity Clouds of the Milky Way. We show that these haloes cannot be produced by a galactic fountain process (supernova outflows from the disk) where the fountain gas conserves its angular momentum. Making this gas interact with a pre-existing hot corona does not solve the problem. These results point at the need for a substantial accretion of low angular momentum material from the IGM.

Gaseous haloes: Linking galaxies to the IGM

New Astronomy Reviews 51:1-2 (2007) 95-98

Authors:

F Fraternali, J Binney, T Oosterloo, R Sancisi

Abstract:

In recent years, evidence has accumulated that nearby spiral galaxies are surrounded by massive haloes of neutral and ionised gas. These gaseous haloes rotate more slowly than the disks and show inflow motions. They are clearly analogous to the High Velocity Clouds of the Milky Way. We show that these haloes cannot be produced by a galactic fountain process (supernova outflows from the disk) where the fountain gas conserves its angular momentum. Making this gas interact with a pre-existing hot corona does not solve the problem. These results point at the need for a substantial accretion of low angular momentum material from the IGM. 漏 2006 Elsevier B.V. All rights reserved.