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12 results on '"Mieth, J."'

1. BepiColombo observations of cold oxygen and carbon ions in the flank of the induced magnetosphere of Venus

Author

Hadid, L. Z., Delcourt, D., Saito, Y., Fränz, M., Yokota, S., Fiethe, B., Verdeil, C., Katra, B., Leblanc, F., Fischer, H., Persson, M., Aizawa, S., André, N., Harada, Y., Fedorov, A., Fontaine, D., Krupp, N., Michalik, H., Berthelier, J-J., Krüger, H., Murakami, G., Matsuda, S., Heyner, D., Auster, H.-U., Richter, I., Mieth, J. Z. D., Schmid, D., and Fischer, D.

Published
2024
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2. The 17 April 2021 widespread solar energetic particle event

Author

Dresing, N., Rodríguez-García, L., Jebaraj, I. C., Warmuth, A., Wallace, S., Balmaceda, L., Podladchikova, T., Strauss, R. D., Kouloumvakos, A., Palmroos, C., Krupar, V., Gieseler, J., Xu, Z., Mitchell, J. G., Cohen, C. M. S., de Nolfo, G. A., Palmerio, E., Carcaboso, F., Kilpua, E. K. J., Trotta, D., Auster, U., Asvestari, E., da Silva, D., Dröge, W., Getachew, T., Gómez-Herrero, R., Grande, M., Heyner, D., Holmström, M., Huovelin, J., Kartavykh, Y., Laurenza, M., Lee, C. O., Mason, G., Maksimovic, M., Mieth, J., Murakami, G., Oleynik, P., Pinto, M., Pulupa, M., Richter, I., Rodríguez-Pacheco, J., Sánchez-Cano, B., Schuller, F., Ueno, H., Vainio, R., Vecchio, A., Veronig, A. M., and Wijsen, N.

Subjects
Astrophysics - Solar and Stellar Astrophysics, Physics - Space Physics
Abstract

Context. A solar eruption on 17 April 2021 produced a widespread Solar Energetic Particle (SEP) event that was observed by five longitudinally well-separated observers in the inner heliosphere at heliocentric distances of 0.42 to 1 au: BepiColombo, Parker Solar Probe, Solar Orbiter, STEREO A, and near-Earth spacecraft. The event produced relativistic electrons and protons. It was associated with a long-lasting solar hard X-ray flare and a medium fast Coronal Mass Ejection (CME) with a speed of 880 km/s driving a shock, an EUV wave as well as long-lasting radio burst activity showing four distinct type III burst. Methods. A multi-spacecraft analysis of remote-sensing and in-situ observations is applied to attribute the SEP observations at the different locations to the various potential source regions at the Sun. An ENLIL simulation is used to characterize the interplanetary state and its role for the energetic particle transport. The magnetic connection between each spacecraft and the Sun is determined. Based on a reconstruction of the coronal shock front we determine the times when the shock establishes magnetic connections with the different observers. Radio observations are used to characterize the directivity of the four main injection episodes, which are then employed in a 2D SEP transport simulation. Results. Timing analysis of the inferred SEP solar injection suggests different source processes being important for the electron and the proton event. Comparison among the characteristics and timing of the potential particle sources, such as the CME-driven shock or the flare, suggests a stronger shock contribution for the proton event and a more likely flare-related source of the electron event. Conclusions. We find that in this event an important ingredient for the wide SEP spread was the wide longitudinal range of about 110 degrees covered by distinct SEP injections.

Published
2023
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3. LatHyS global hybrid simulation of the BepiColombo second Venus flyby

Author

Aizawa, S., Persson, M., Menez, T., André, N., Modolo, R., Génot, V., Sanchez-Cano, B., Volwerk, M., Chaufray, J.-Y., Baskevitch, C., Heyner, D., Saito, Y., Harada, Y., Leblanc, F., Barthe, A., Penou, E., Fedorov, A., Sauvaud, J.-A., Yokota, S., Auster, U., Richter, I., Mieth, J., Horbury, T.S., Louarn, P., Owen, C.J., and Murakami, G.

Published
2022
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4. BepiColombo mission confirms stagnation region of Venus and reveals its large extent

Author

Persson, M., Aizawa, S., André, N., Barabash, S., Saito, Y., Harada, Y., Heyner, D., Orsini, S., Fedorov, A., Mazelle, C., Futaana, Y., Hadid, L. Z., Volwerk, M., Collinson, G., Sanchez-Cano, B., Barthe, A., Penou, E., Yokota, S., Génot, V., Sauvaud, J. A., Delcourt, D., Fraenz, M., Modolo, R., Milillo, A., Auster, H.-U., Richter, I., Mieth, J. Z. D., Louarn, P., Owen, C. J., Horbury, T. S., Asamura, K., Matsuda, S., Nilsson, H., Wieser, M., Alberti, T., Varsani, A., Mangano, V., Mura, A., Lichtenegger, H., Laky, G., Jeszenszky, H., Masunaga, K., Signoles, C., Rojo, M., and Murakami, G.

Published
2022
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5. Multispacecraft Observations of a Widespread Solar Energetic Particle Event on 2022 February 15–16

Author

Khoo, L. Y., primary, Sánchez-Cano, B., additional, Lee, C. O., additional, Rodríguez-García, L., additional, Kouloumvakos, A., additional, Palmerio, E., additional, Carcaboso, F., additional, Lario, D., additional, Dresing, N., additional, Cohen, C. M. S., additional, McComas, D. J., additional, Lynch, B. J., additional, Fraschetti, F., additional, Jebaraj, I. C., additional, Mitchell, J. G., additional, Nieves-Chinchilla, T., additional, Krupar, V., additional, Pacheco, D., additional, Giacalone, J., additional, Auster, H.-U., additional, Benkhoff, J., additional, Bonnin, X., additional, Christian, E. R., additional, Ehresmann, B., additional, Fedeli, A., additional, Fischer, D., additional, Heyner, D., additional, Holmström, M., additional, Leske, R. A., additional, Maksimovic, M., additional, Mieth, J. Z. D., additional, Oleynik, P., additional, Pinto, M., additional, Richter, I., additional, Rodríguez-Pacheco, J., additional, Schwadron, N. A., additional, Schmid, D., additional, Telloni, D., additional, Vecchio, A., additional, and Wiedenbeck, M. E., additional

Published
2024
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6. The BepiColombo Planetary Magnetometer MPO-MAG: What Can We Learn from the Hermean Magnetic Field?

Author

Heyner, D., Auster, H.-U., Fornaçon, K.-H., Carr, C., Richter, I., Mieth, J. Z. D., Kolhey, P., Exner, W., Motschmann, U., Baumjohann, W., Matsuoka, A., Magnes, W., Berghofer, G., Fischer, D., Plaschke, F., Nakamura, R., Narita, Y., Delva, M., Volwerk, M., Balogh, A., Dougherty, M., Horbury, T., Langlais, B., Mandea, M., Masters, A., Oliveira, J. S., Sánchez-Cano, B., Slavin, J. A., Vennerstrøm, S., Vogt, J., Wicht, J., and Glassmeier, K.-H.

Published
2021
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7. Magnetic holes between Earth and Mercury: BepiColombo cruise phase

Author

Volwerk, M., primary, Karlsson, T., additional, Heyner, D., additional, Goetz, C., additional, Simon Wedlund, C., additional, Plaschke, F., additional, Schmid, D., additional, Fischer, D., additional, Mieth, J., additional, Richter, I., additional, Nakamura, R., additional, Narita, Y., additional, Magnes, W., additional, Auster, U., additional, Matsuoka, A., additional, Baumjohann, W., additional, and Glassmeier, K.-H., additional

Published
2023
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8. The 17 April 2021 widespread solar energetic particle event

Author

Dresing, N., primary, Rodríguez-García, L., additional, Jebaraj, I. C., additional, Warmuth, A., additional, Wallace, S., additional, Balmaceda, L., additional, Podladchikova, T., additional, Strauss, R. D., additional, Kouloumvakos, A., additional, Palmroos, C., additional, Krupar, V., additional, Gieseler, J., additional, Xu, Z., additional, Mitchell, J. G., additional, Cohen, C. M. S., additional, de Nolfo, G. A., additional, Palmerio, E., additional, Carcaboso, F., additional, Kilpua, E. K. J., additional, Trotta, D., additional, Auster, U., additional, Asvestari, E., additional, da Silva, D., additional, Dröge, W., additional, Getachew, T., additional, Gómez-Herrero, R., additional, Grande, M., additional, Heyner, D., additional, Holmström, M., additional, Huovelin, J., additional, Kartavykh, Y., additional, Laurenza, M., additional, Lee, C. O., additional, Mason, G., additional, Maksimovic, M., additional, Mieth, J., additional, Murakami, G., additional, Oleynik, P., additional, Pinto, M., additional, Pulupa, M., additional, Richter, I., additional, Rodríguez-Pacheco, J., additional, Sánchez-Cano, B., additional, Schuller, F., additional, Ueno, H., additional, Vainio, R., additional, Vecchio, A., additional, Veronig, A. M., additional, and Wijsen, N., additional

Published
2023
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9. Magnetic holes between Earth and Mercury : BepiColombo cruise phase

Author

Volwerk, M., Karlsson, Tomas, Heyner, D., Goetz, C., Simon Wedlund, C., Plaschke, F., Schmid, D., Fischer, D., Mieth, J., Richter, I., Nakamura, R., Narita, Y., Magnes, W., Auster, U., Matsuoka, A., Baumjohann, W., Glassmeier, K. -H, Volwerk, M., Karlsson, Tomas, Heyner, D., Goetz, C., Simon Wedlund, C., Plaschke, F., Schmid, D., Fischer, D., Mieth, J., Richter, I., Nakamura, R., Narita, Y., Magnes, W., Auster, U., Matsuoka, A., Baumjohann, W., and Glassmeier, K. -H

Abstract

Context. Magnetic holes are ubiquitous structures in the solar wind and in planetary magnetosheaths. They consist of a strong depression of the magnetic field strength, most likely in pressure balance through increased plasma pressure, which is convected with the plasma flow. These structures are created through a plasma temperature anisotropy, where the perpendicular temperature (with respect to the magnetic field) is greater than the parallel temperature. The occurrence rate of these magnetic holes between Earth and Mercury can give us information about how the solar wind conditions develop on their way from the Sun to the outer Solar System. They also give information about basic plasma processes such as diffusion of magnetic structures.Aims. In this study we investigate the occurrence, size, and depth of magnetic holes during the cruise phase of BepiColombo and compare them with earlier studies.Methods. The BepiColombo magnetometer data were used to find the magnetic holes. We determined the size in seconds, the depth with respect to the background field, and the rotation angle of the background field across the structure. Minimum variance analysis delivers the polarization state of the magnetic holes. A direct comparison is made to the results obtained from the MESSENGER cruise phase.Results. We find an almost constant occurrence rate for magnetic holes between Mercury and Earth. The size of the holes is determined by the plasma conditions at the location where they are created and they grow in size, due to diffusion, as they move outwards in the Solar System. The greater the rotation of the background magnetic field across the structure, the larger the minimum size of the magnetic hole is., QC 20230922

Published
2023
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