Articles | Volume 40, issue 2
https://doi.org/10.5194/angeo-40-217-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-40-217-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Regular paper
| 
22 Apr 2022
Regular paper |
| 22 Apr 2022
| 22 Apr 2022
Dayside magnetopause reconnection and flux transfer events under radial interplanetary magnetic field (IMF): BepiColombo Earth-flyby observations
Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI 48109, USA
James A. Slavin
Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI 48109, USA
Rumi Nakamura
Space Research Institute, Austrian Academy of Sciences, Schmiedlstraße 6, 8042 Graz, Austria
Daniel Heyner
Institut für Geophysik und extraterrestrische Physik, Technische Universität Braunschweig, 38106 Braunschweig, Germany
Karlheinz J. Trattner
Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO 80303, USA
Johannes Z. D. Mieth
Institut für Geophysik und extraterrestrische Physik, Technische Universität Braunschweig, 38106 Braunschweig, Germany
Jiutong Zhao
School of Earth and Space Sciences, Peking University, Beijing 100871, China
Qiu-Gang Zong
School of Earth and Space Sciences, Peking University, Beijing 100871, China
Sae Aizawa
Institut de Recherche en Astrophysique et Planétologie, CNRS-UPS-CNES, Toulouse, France
Department of Geophysics, Graduate School of Science, Tohoku University, Sendai, Japan
Nicolas Andre
Institut de Recherche en Astrophysique et Planétologie, CNRS-UPS-CNES, Toulouse, France
Yoshifumi Saito
Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science, Kanagawa, Japan
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In our study, we looked at the boundary between the Earth's magnetic field and the interplanetary magnetic field emitted by the Sun, called the magnetopause. While other studies focus on the magnetopause motion near Earth's Equator, we have studied it in polar regions. The motion of the magnetopause is faster towards the Earth than towards the Sun. We also found that the occurrence of unusual magnetopause locations is due to similar solar influences in the equatorial and polar regions.
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Magnetospheric physics is in an extremely vibrant phase, with a number of ongoing and highly successful missions, e.g., Cluster, THEMIS, Van Allen Probes, and the MMS spacecraft, providing the most amazing observations and data sets. Since there are many fundamental and unsolved problems, in this paper I have addressed selected topics of ULF wave–charged particle interactions which encompass many special fields of radiation belt, ring current and plasmaspheric physics.
Ioannis A. Daglis, Loren C. Chang, Sergio Dasso, Nat Gopalswamy, Olga V. Khabarova, Emilia Kilpua, Ramon Lopez, Daniel Marsh, Katja Matthes, Dibyendu Nandy, Annika Seppälä, Kazuo Shiokawa, Rémi Thiéblemont, and Qiugang Zong
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Ann. Geophys., 39, 811–831, https://doi.org/10.5194/angeo-39-811-2021, https://doi.org/10.5194/angeo-39-811-2021, 2021
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Alexander Lukin, Anton Artemyev, Evgeny Panov, Rumi Nakamura, Anatoly Petrukovich, Robert Ergun, Barbara Giles, Yuri Khotyaintsev, Per Arne Lindqvist, Christopher Russell, and Robert Strangeway
Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2020-76, https://doi.org/10.5194/angeo-2020-76, 2020
Revised manuscript not accepted
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Xingran Chen, Qiugang Zong, Hong Zou, Xuzhi Zhou, Li Li, Yixin Hao, and Yongfu Wang
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We present a new in situ observation of energetic electrons in space obtained by a newly available particle detector. In view of the characteristic signatures in the particle flux, we attribute the observational features to the drift-resonance wave–particle interaction between energetic electrons and multiple localized ultra-low-frequency waves. The scenario is substantiated by a numerical calculation based on the revised drift-resonance theory which reproduced the observed particle signatures.
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The magnetic field that is carried by the solar wind slowly decreases in strength as it moves further from the Sun. However, there are sometimes localized decreases in the magnetic field strength, called magnetic holes. These are small structures where the magnetic field strength decreases to less than 50 % of the surroundings and the plasma density increases. This paper presents a statistical study of the behaviour of these holes between Mercury and Venus using MESSENGER data.
Johannes Z. D. Mieth, Dennis Frühauff, and Karl-Heinz Glassmeier
Ann. Geophys., 37, 163–169, https://doi.org/10.5194/angeo-37-163-2019, https://doi.org/10.5194/angeo-37-163-2019, 2019
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The magnetopause (MP) is the primary interaction region between solar wind and the magnetic field of planet Earth and understanding of its behaviour also helps to better understand space weather. One famous model of the MP is the Shue et al. model, designed for the dayside and near-Earth situation. We take data of the ARTEMIS mission orbiting the moon and compare the MP position and shape to the model. We find differences in the location prediction but good agreement for the MP normal direction.
Shuai Zhang, Anmin Tian, Quanqi Shi, Hanlin Li, Alexander W. Degeling, I. Jonathan Rae, Colin Forsyth, Mengmeng Wang, Xiaochen Shen, Weijie Sun, Shichen Bai, Ruilong Guo, Huizi Wang, Andrew Fazakerley, Suiyan Fu, and Zuyin Pu
Ann. Geophys., 36, 1335–1346, https://doi.org/10.5194/angeo-36-1335-2018, https://doi.org/10.5194/angeo-36-1335-2018, 2018
Short summary
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The features of ULF waves are statistically studied on the magnetotail stretched magnetic field lines (8 RE < R < 32 RE) by using 8 years of THEMIS data. The occurrence rates of ULF waves are higher in the post-midnight region than pre-midnight region. The frequency decreases with increasing radial distance of 8–16 RE and could be explained by much more standing waves in this region than in the region of 16–32 RE. The wave frequency is higher after the substorm onset than before it.
Sudong Xiao, Tielong Zhang, Guoqiang Wang, Martin Volwerk, Yasong Ge, Daniel Schmid, Rumi Nakamura, Wolfgang Baumjohann, and Ferdinand Plaschke
Ann. Geophys., 35, 1015–1022, https://doi.org/10.5194/angeo-35-1015-2017, https://doi.org/10.5194/angeo-35-1015-2017, 2017
Christina Chu, Hui Zhang, David Sibeck, Antonius Otto, QiuGang Zong, Nick Omidi, James P. McFadden, Dennis Fruehauff, and Vassilis Angelopoulos
Ann. Geophys., 35, 443–451, https://doi.org/10.5194/angeo-35-443-2017, https://doi.org/10.5194/angeo-35-443-2017, 2017
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Dennis Frühauff, Johannes Z. D. Mieth, and Karl-Heinz Glassmeier
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The determination of the polytropic index the plasma sheet of Earth's magnetosphere using THEMIS data. The data set reveals that the active magnetotail density and pressure data are well correlated. Yet, considering broad distributions of specific entropies, the evaluation is best performed on shorter timescales.
David Fischer, Werner Magnes, Christian Hagen, Ivan Dors, Mark W. Chutter, Jerry Needell, Roy B. Torbert, Olivier Le Contel, Robert J. Strangeway, Gernot Kubin, Aris Valavanoglou, Ferdinand Plaschke, Rumi Nakamura, Laurent Mirioni, Christopher T. Russell, Hannes K. Leinweber, Kenneth R. Bromund, Guan Le, Lawrence Kepko, Brian J. Anderson, James A. Slavin, and Wolfgang Baumjohann
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In the paper we study flapping wave structures, generated in the neutral plane of the Earth magnetotail. Investigated flapping is an important process of magnetosphere dynamics, connected with magnetic energy transformation and magnetic storm formation. Large separation of Cluster spacecraft allows us to estimate both local and global properties of flapping current sheets, the typical flapping times and propagation directions.
Takuma Nakamura, Rumi Nakamura, and Hiroshi Haseagwa
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Magnetic reconnection is a key process in space and laboratory plasmas which transfers energies through the magnetic field topology change. The topology change in this process takes place in a small scale region called the electron diffusion region (EDR). In this paper, using high-resolution fully kinetic simulations, we successfully obtained the firm scaling laws of spatial dimensions of the EDR. The obtained scalings allow us to precisely predict observable dimensions of the EDR in real space.
Sudong Xiao, Tielong Zhang, Yasong Ge, Guoqiang Wang, Wolfgang Baumjohann, and Rumi Nakamura
Ann. Geophys., 34, 303–311, https://doi.org/10.5194/angeo-34-303-2016, https://doi.org/10.5194/angeo-34-303-2016, 2016
Y. Narita, R. Nakamura, W. Baumjohann, K.-H. Glassmeier, U. Motschmann, and H. Comişel
Ann. Geophys., 34, 85–89, https://doi.org/10.5194/angeo-34-85-2016, https://doi.org/10.5194/angeo-34-85-2016, 2016
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Four-spacecraft Cluster observations of turbulent fluctuations in the magnetic reconnection region in the geomagnetic tail show for the first time an indication of ion Bernstein waves, electromagnetic waves that propagate nearly perpendicular to the mean magnetic field and are in resonance with ions. Bernstein waves may influence current sheet dynamics in the reconnection outflow such as a bifurcation of the current sheet.
I. I. Vogiatzis, A. Isavnin, Q.-G. Zong, E. T. Sarris, S. W. Lu, and A. M. Tian
Ann. Geophys., 33, 63–74, https://doi.org/10.5194/angeo-33-63-2015, https://doi.org/10.5194/angeo-33-63-2015, 2015
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Magnetospheric substorms are one of the most important phenomena occurring in planetary magnetotails, dynamically reconfiguring the near- planet space environment. They encompass various fundamental processes of plasma acceleration and transport in the magnetosphere/ionosphere. The key features of the paper are a new magnetospheric substorm model, a new explanation about the origin of dipolarization fronts (DFs), and a new explanation for energetic ion acceleration/injection in front of DFs.
R. Wang, R. Nakamura, T. Zhang, A. Du, W. Baumjohann, Q. Lu, and A. N. Fazakerley
Ann. Geophys., 32, 239–248, https://doi.org/10.5194/angeo-32-239-2014, https://doi.org/10.5194/angeo-32-239-2014, 2014
I. Y. Vasko, A. V. Artemyev, A. A. Petrukovich, R. Nakamura, and L. M. Zelenyi
Ann. Geophys., 32, 133–146, https://doi.org/10.5194/angeo-32-133-2014, https://doi.org/10.5194/angeo-32-133-2014, 2014
R. Nakamura, F. Plaschke, R. Teubenbacher, L. Giner, W. Baumjohann, W. Magnes, M. Steller, R. B. Torbert, H. Vaith, M. Chutter, K.-H. Fornaçon, K.-H. Glassmeier, and C. Carr
Geosci. Instrum. Method. Data Syst., 3, 1–11, https://doi.org/10.5194/gi-3-1-2014, https://doi.org/10.5194/gi-3-1-2014, 2014
Y. Narita, R. Nakamura, and W. Baumjohann
Ann. Geophys., 31, 1605–1610, https://doi.org/10.5194/angeo-31-1605-2013, https://doi.org/10.5194/angeo-31-1605-2013, 2013
A. V. Artemyev, A. A. Petrukovich, R. Nakamura, and L. M. Zelenyi
Ann. Geophys., 31, 1109–1114, https://doi.org/10.5194/angeo-31-1109-2013, https://doi.org/10.5194/angeo-31-1109-2013, 2013
M. Volwerk, N. André, C. S. Arridge, C. M. Jackman, X. Jia, S. E. Milan, A. Radioti, M. F. Vogt, A. P. Walsh, R. Nakamura, A. Masters, and C. Forsyth
Ann. Geophys., 31, 817–833, https://doi.org/10.5194/angeo-31-817-2013, https://doi.org/10.5194/angeo-31-817-2013, 2013
A. Alexandrova, R. Nakamura, V. S. Semenov, I. V. Kubyshkin, S. Apatenkov, E. V. Panov, D. Korovinskiy, H. Biernat, W. Baumjohann, K.-H. Glassmeier, and J. P. McFadden
Ann. Geophys., 30, 1727–1741, https://doi.org/10.5194/angeo-30-1727-2012, https://doi.org/10.5194/angeo-30-1727-2012, 2012
Related subject area
Subject: Magnetosphere & space plasma physics | Keywords: Magnetopause, cusp, and boundary layers
Magnetopause as conformal mapping
Plasma transport into the duskside magnetopause caused by Kelvin–Helmholtz vortices in response to the northward turning of the interplanetary magnetic field observed by THEMIS
Magnetospheric Multiscale observations of energetic oxygen ions at the duskside magnetopause during intense substorms
Statistical analysis of magnetopause crossings at lunar distances
Yasuhito Narita, Simon Toepfer, and Daniel Schmid
Ann. Geophys., 41, 87–91, https://doi.org/10.5194/angeo-41-87-2023, https://doi.org/10.5194/angeo-41-87-2023, 2023
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Magnetopause is a shielding boundary of planetary magnetic field. Many mathematical models have been proposed to describe or to reproduce the magnetopause location, but they are restricted to the real-number functions. In this work, we analytically develop a magnetopause model in the complex-number domain, which is advantageous in deforming the magnetopause shape in a conformal (angle-preserving) way, and is suited to compare different models or map one model onto another.
Guang Qing Yan, George K. Parks, Chun Lin Cai, Tao Chen, James P. McFadden, and Yong Ren
Ann. Geophys., 38, 263–273, https://doi.org/10.5194/angeo-38-263-2020, https://doi.org/10.5194/angeo-38-263-2020, 2020
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We present (1) K–H vortices in direct response to the northward turning of the interplanetary magnetic field (IMF); (2) solar wind transport into the magnetosphere caused by the K–H vortices, involving both ion and electron fluxes; and (3) typical portraits of the ion and electron fluxes in the regions of plasma transport. The unique characteristics may complement existing observations and enhance our understanding of the K–H vortices and transport process.
Chen Zeng, Suping Duan, Chi Wang, Lei Dai, Stephen Fuselier, James Burch, Roy Torbert, Barbara Giles, and Christopher Russell
Ann. Geophys., 38, 123–135, https://doi.org/10.5194/angeo-38-123-2020, https://doi.org/10.5194/angeo-38-123-2020, 2020
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Oxygen ions are an important element in the mass and energy transport in the magnetospheric dynamic process during intense substorms (AE > 500 nT). We did this work to better understand the O+ at the dusk flank magnetopause varying with solar wind conditions and AE index during intense substorms. The results show the O+ abundance at the duskside magnetopause has a corresponding relation to that in the duskside near-Earth plasma sheet.
Johannes Z. D. Mieth, Dennis Frühauff, and Karl-Heinz Glassmeier
Ann. Geophys., 37, 163–169, https://doi.org/10.5194/angeo-37-163-2019, https://doi.org/10.5194/angeo-37-163-2019, 2019
Short summary
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The magnetopause (MP) is the primary interaction region between solar wind and the magnetic field of planet Earth and understanding of its behaviour also helps to better understand space weather. One famous model of the MP is the Shue et al. model, designed for the dayside and near-Earth situation. We take data of the ARTEMIS mission orbiting the moon and compare the MP position and shape to the model. We find differences in the location prediction but good agreement for the MP normal direction.
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Short summary
This paper presents observations of FTE-type flux ropes on the dayside during BepiColombo's Earth flyby. FTE-type flux ropes are a well-known feature of magnetic reconnection on the magnetopause, and they can be used to constrain the location of reconnection X-lines. Our study suggests that the magnetopause X-line passed BepiColombo from the north as it traversed the magnetopause. Moreover, our results also strongly support coalescence creating larger flux ropes by combining smaller ones.
This paper presents observations of FTE-type flux ropes on the dayside during BepiColombo's...
