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54 papers · 1 filter
Cosmic-ray driven dynamo in galactic disks
M. Hanasz, K. Otmianowska-Mazur, H. Lesch +6
We present new developments on the Cosmic--Ray driven, galactic dynamo, modeled by means of direct, resistive CR--MHD simulations, performed with ZEUS and PIERNIK codes. The dynamo…
Relativistic Lidov-Kozai resonance in binaries
Cezary Migaszewski, Krzysztof Gozdziewski
We consider the secular dynamics of a binary and a planet in terms of non-restricted, hierarchical three-body problem, including the general relativity corrections to the Newtonian…
PIERNIK mhd code - a multi-fluid, non-ideal extension of the relaxing-TVD scheme (III)
Michał Hanasz, Kacper Kowalik, Dominik Wóltański +1
We present a new multi-fluid, grid MHD code PIERNIK, which is based on the Relaxing TVD scheme (Jin & Xin, 1995). The original scheme (see Trac & Pen (2003) and Pen et al. (2003))…
Cosmic ray driven dynamo in galactic disks. A parameter study
Michał Hanasz, Katarzyna Otmianowska-Mazur, Grzegorz Kowal +1
We present a parameter study of the magnetohydrodynamical dynamo driven by cosmic rays in the interstellar medium (ISM) focusing on the efficiency of magnetic field amplification a…
Simultaneous H.E.S.S. and Chandra observations of Sagittarius A* during an X-ray flare
H. E. S. S. Collaboration, :, F. Aharonian
The rapidly varying (~10 minute timescale) non-thermal X-ray emission observed from Sgr A* implies that particle acceleration is occuring close to the event horizon of the supermas…
PIERNIK mhd code - a multi-fluid, non-ideal extension of the relaxing-TVD scheme (II)
Michał Hanasz, Kacper Kowalik, Dominik Wóltański +2
We present a new multi-fluid, grid MHD code PIERNIK, which is based on the Relaxing TVD scheme (Jin and Xin, 1995). The original scheme (see Trac & Pen (2003) and Pen et al. (2003)…