Articles | Volume 34, issue 1
https://doi.org/10.5194/angeo-34-1-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/angeo-34-1-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Regular paper
| 
15 Jan 2016
Regular paper |
| 15 Jan 2016
Mass-loading, pile-up, and mirror-mode waves at comet 67P/Churyumov-Gerasimenko
Space Research Institute, Austrian Academy of Sciences, Graz, Austria
I. Richter
Institute for Geophysics and Extraterrestrial Physics, TU Braunschweig, Germany
B. Tsurutani
California Institute of Technology, Pasadena, California, USA
Institute for Geophysics and Extraterrestrial Physics, TU Braunschweig, Germany
K. Altwegg
Physikalisches Institut, University of Bern, Bern, Switzerland
T. Broiles
Southwest Research Institute, San Antonio, Texas, USA
J. Burch
Southwest Research Institute, San Antonio, Texas, USA
C. Carr
Space and Atmospheric Physics Group, Imperial College London, London, UK
E. Cupido
Space and Atmospheric Physics Group, Imperial College London, London, UK
M. Delva
Space Research Institute, Austrian Academy of Sciences, Graz, Austria
M. Dósa
Wigner Research Centre for Physics, Institute for Particle and Nuclear Physics, Hungarian Academy of Sciences, Budapest, Hungary
N. J. T. Edberg
Swedish Institute of Space Physics, Uppsala, Sweden
A. Eriksson
Swedish Institute of Space Physics, Uppsala, Sweden
Wigner Research Centre for Physics, Institute for Particle and Nuclear Physics, Hungarian Academy of Sciences, Budapest, Hungary
C. Koenders
Institute for Geophysics and Extraterrestrial Physics, TU Braunschweig, Germany
J.-P. Lebreton
Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, Orleans, France
K. E. Mandt
Southwest Research Institute, San Antonio, Texas, USA
H. Nilsson
Swedish Institute of Space Physics, Kiruna, Sweden
A. Opitz
Wigner Research Centre for Physics, Institute for Particle and Nuclear Physics, Hungarian Academy of Sciences, Budapest, Hungary
Physikalisches Institut, University of Bern, Bern, Switzerland
K. Schwingenschuh
Space Research Institute, Austrian Academy of Sciences, Graz, Austria
G. Stenberg Wieser
Swedish Institute of Space Physics, Kiruna, Sweden
Wigner Research Centre for Physics, Institute for Particle and Nuclear Physics, Hungarian Academy of Sciences, Budapest, Hungary
C. Vallat
Rosetta Science Ground Segment, European Space Astronomy Centre, Madrid, Spain
X. Vallieres
Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, Orleans, France
K.-H. Glassmeier
Institute for Geophysics and Extraterrestrial Physics, TU Braunschweig, Germany
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This article is included in the Encyclopedia of Geosciences
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This article is included in the Encyclopedia of Geosciences
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This article is included in the Encyclopedia of Geosciences
Daniel Schmid, Yasuhito Narita, Ferdinand Plaschke, Martin Volwerk, Rumi Nakamura, and Wolfgang Baumjohann
Ann. Geophys., 39, 563–570, https://doi.org/10.5194/angeo-39-563-2021, https://doi.org/10.5194/angeo-39-563-2021, 2021
Short summary
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This article is included in the Encyclopedia of Geosciences
Charlotte Goetz, Herbert Gunell, Fredrik Johansson, Kristie LLera, Hans Nilsson, Karl-Heinz Glassmeier, and Matthew G. G. T. Taylor
Ann. Geophys., 39, 379–396, https://doi.org/10.5194/angeo-39-379-2021, https://doi.org/10.5194/angeo-39-379-2021, 2021
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Boundaries in the plasma around comet 67P separate regions with different properties. Many have been identified, including a new boundary called an infant bow shock. Here, we investigate how the plasma and fields behave at this boundary and where it can be found. The main result is that the infant bow shock occurs at intermediate activity and intermediate distances to the comet. Most plasma parameters behave as expected; however, some inconsistencies indicate that the boundary is non-stationary.
This article is included in the Encyclopedia of Geosciences
Martin Volwerk, David Mautner, Cyril Simon Wedlund, Charlotte Goetz, Ferdinand Plaschke, Tomas Karlsson, Daniel Schmid, Diana Rojas-Castillo, Owen W. Roberts, and Ali Varsani
Ann. Geophys., 39, 239–253, https://doi.org/10.5194/angeo-39-239-2021, https://doi.org/10.5194/angeo-39-239-2021, 2021
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This article is included in the Encyclopedia of Geosciences
Herbert Gunell, Charlotte Goetz, Elias Odelstad, Arnaud Beth, Maria Hamrin, Pierre Henri, Fredrik L. Johansson, Hans Nilsson, and Gabriella Stenberg Wieser
Ann. Geophys., 39, 53–68, https://doi.org/10.5194/angeo-39-53-2021, https://doi.org/10.5194/angeo-39-53-2021, 2021
Short summary
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When the magnetised solar wind meets the plasma surrounding a comet, the magnetic field is enhanced in front of the comet, and the field lines are draped around it. This happens because electric currents are induced in the plasma. When these currents flow through the plasma, they can generate waves. In this article we present observations of ion acoustic waves, which is a kind of sound wave in the plasma, detected by instruments on the Rosetta spacecraft near comet 67P/Churyumov–Gerasimenko.
This article is included in the Encyclopedia of Geosciences
Short summary
The solar wind magnetic field drapes around the active nucleus of comet 67P/CG, creating a magnetosphere. The solar wind density increases and with that the pressure, which compresses the magnetosphere, increasing the magnetic field strength near Rosetta. The higher solar wind density also creates more ionization through collisions with the gas from the comet. The new ions are picked-up by the magnetic field and generate mirror-mode waves, creating low-field high-density "bottles" near 67P/CG.
The solar wind magnetic field drapes around the active nucleus of comet 67P/CG, creating a...
