76 citations · 232 across the 7 of their papers we have counts for
7 papers
Free energy sources in current sheets formed in collisionless plasma turbulence
Neeraj Jain, Jörg Büchner, Horia Comişel +1
Collisionless dissipation of macroscopic energy into heat is an unsolved problem of space and astrophysical plasmas, e.g., solar wind and Earth's magnetosheath. The most viable pro…
Observation of a New Type of Low Frequency Waves at Comet 67P/Churyumov-Gerasimenko
I. Richter, C. Koenders, H. -U. Auster +23
We report on magnetic field measurements made in the innermost coma of 67P/Churyumov-Gerasimenko in its low activity state. Quasi-coherent, large-amplitude (), compres…
Spectral evolution of two-dimensional kinetic plasma turbulence in the wavenumber-frequency domain
H. Comişel, D. Verscharen, Y. Narita +1
We present a method for studying the evolution of plasma turbulence by tracking dispersion relations in the energy spectrum in the wavenumber-frequency domain. We apply hybrid plas…
Parametric decay of oblique Alfvén waves in two-dimensional hybrid simulations
Daniel Verscharen, Eckart Marsch, Uwe Motschmann +1
Certain types of plasma waves are known to become parametrically unstable under specific plasma conditions, in which the pump wave will decay into several daughter waves with diffe…
Kinetic cascade beyond magnetohydrodynamics of solar wind turbulence in two-dimensional hybrid simulations
Daniel Verscharen, Eckart Marsch, Uwe Motschmann +1
The nature of solar wind turbulence in the dissipation range at scales much smaller than the large MHD scales remains under debate. Here a two-dimensional model based on the hybrid…
Stellar activity and magnetic shielding
J. -M. Grießmeier, M. Khodachenko, H. Lammer +3
Stellar activity has a particularly strong influence on planets at small orbital distances, such as close-in exoplanets. For such planets, we present two extreme cases of stellar v…
The initial temporal evolution of a feedback dynamo for Mercury
D. Heyner, D. Schmitt, J. Wicht +3
Various possibilities are currently under discussion to explain the observed weakness of the intrinsic magnetic field of planet Mercury. One of the possible dynamo scenarios is a d…