76 citations · 464 across the 17 of their papers we have counts for
17 papers
Galactic Cosmic Rays at Mars and Venus: Temporal Variations from Hours to Decades Measured as the Background Signal of Onboard Micro-Channel Plates
Yoshifumi Futaana, Manabu Shimoyama, Martin Wieser +8
A Micro-Channel Plate (MCP) is a widely used component for counting particles in space. Using the background counts of MCPs on Mars Express and Venus Express orbiters operated over…
Plasma densities, flow and Solar EUV flux at comet 67P - A cross-calibration approach
F. L. Johansson, A. I. Eriksson, E. Vigren +7
During its two-year mission at comet 67P, Rosetta nearly continuously monitored the inner coma plasma environment for gas production rates varying over three orders of magnitude, a…
Cometary Plasma Science -- A White Paper in response to the Voyage 2050 Call by the European Space Agency
Charlotte Götz, Herber Gunell, Martin Volwerk +27
Comets hold the key to the understanding of our solar system, its formation and its evolution, and to the fundamental plasma processes at work both in it and beyond it. A comet nuc…
Solar wind charge exchange in cometary atmospheres. I. Charge-changing and ionization cross sections for He and H particles in HO
Cyril Simon Wedlund, Dennis Bodewits, Markku Alho +7
Solar wind charge-changing reactions are of paramount importance to the physico-chemistry of the atmosphere of a comet, mass-loading the solar wind through an effective conversion…
Solar wind charge exchange in cometary atmospheres III. Results from the Rosetta mission to comet 67P/Churyumov-Gerasimenko
Cyril Simon Wedlund, Etienne Behar, Hans Nilsson +12
Solar wind charge-changing reactions are of paramount importance to the physico-chemistry of the atmosphere of a comet. The ESA/Rosetta mission to comet 67P/Churyumov-Gerasimenko (…
Solar wind charge exchange in cometary atmospheres. II. Analytical model
Cyril Simon Wedlund, E. Behar, E. Kallio +7
Solar wind charge-changing reactions are of paramount importance to the physico-chemistry of the atmosphere of a comet because they mass-load the solar wind through an effective co…
CME impact on comet 67P/Churyumov-Gerasimenko
Niklas J. T. Edberg, M. Alho, M. André +22
We present Rosetta observations from comet 67P/Churyumov-Gerasimenko during the impact of a coronal mass ejection (CME). The CME impacted on 5-6 Oct 2015, when Rosetta was about 80…
Solar wind dynamics around a comet: The paradigmatic inverse-square-law model
Melaine Saillenfest, Benoît Tabone, Etienne Behar
Aims. Observations of solar protons near comet 67P/Churyumov-Gerasimenko (67P) by the Rosetta spacecraft can be modelled by the planar motion in an effective magnetic field proport…
The birth and growth of a solar wind cavity around a comet -- Rosetta observations
E. Behar, H. Nilsson, M. Alho +2
The Rosetta mission provided detailed observations of the growth of a cavity in the solar wind around comet 67P/CG. As the comet approached the Sun, the plasma of cometary origin g…
Mass-loading of the solar wind at 67P/Churyumov-Gerasimenko -- Observations and modelling
E. Behar, J. Lindkvist, H. Nilsson +4
Context. The first long-term in-situ observation of the plasma environment in the vicinity of a comet, as provided by the European Rosetta spacecraft. Aims. Here we offer character…
Mass loading at 67P/Churyumov-Gerasimenko: a case study
E. Behar, H. Nilsson, G. Stenberg Wieser +3
We study the dynamics of the interaction between the solar wind ions and a partially ionized atmosphere around a comet, at a distance of 2.88 AU from the sun during a period of low…
Dawn-dusk asymmetry induced by the Parker spiral angle in the plasma dynamics around comet 67P/Churyumov-Gerasimenko
E. Behar, B. Tabone, H. Nilsson
When interacting, the solar wind and the ionised atmosphere of a comet exchange energy and momentum. Our aim is to understand the influence of the average Parker spiral configurati…
Solar wind dynamics around a comet - A 2D semi-analytical kinetic model
E. Behar, B. Tabone, M. Saillenfest +5
We aim at analytically modelling the solar wind proton trajectories during their interaction with a partially ionised cometary atmosphere, not in terms of bulk properties of the fl…
The root of a comet tail - Rosetta ion observations at comet 67P/Churyumov--Gerasimenko
E. Behar, H. Nilsson, P. Henri +7
The first 1000 km of the ion tail of comet 67P/Churyumov-Gerasimenko were explored by the European Rosetta spacecraft, 2.7 au away from the Sun. We characterised the dynamics of bo…
Plasma Density Structures at Comet 67P/Churyumov-Gerasimenko
I. A. D. Engelhardt, A. I. Eriksson, G. Stenberg Wieser +7
We present Rosetta RPC case study from four events at various radial distance, phase angle and local time from autumn 2015, just after perihelion of comet 67P/Churyumov-Gerasimenko…
Measurements of the electrostatic potential of Rosetta at comet 67P
Elias Odelstad, Gabriella Stenberg-Wieser, Martin Wieser +3
We present and compare measurements of the spacecraft potential (Vs/c) of the Rosetta space- craft throughout its stay in the inner coma of comet 67P/Churyumov-Gerasimenko, by the…
Cold and warm electrons at comet 67P
A. I. Eriksson, I. A. D. Engelhardt, M. Andre +20
Strong electron cooling on the neutral gas in cometary comae has been predicted for a long time, but actual measurements of low electron temperature are scarce. We present in situ…