Imperial College London
Alternate

ProfessorMarinaGaland

Faculty of Natural Sciences, Department of Physics

Professor in Planetary Science
 
 
 
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Contact

 

m.galand Website

 
 
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Location

 

Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Matteini:2021:0004-6361/202141229,
author = {Matteini, L and Laker, R and Horbury, T and Woodham, L and Bale, SD and Stawarz, JE and Woolley, T and Steinvall, K and Jones, GH and Grant, SR and Afghan, Q and Galand, M and O'Brien, H and Evans, V and Angelini, V and Maksimovic, M and Chust, T and Khotyaintsev, Y and Krasnoselskikh, V and Kretzschmar, M and Lorfevre, E and Plettemeier, D and Soucek, J and Steller, M and Stverak, S and Travnicek, P and Vaivads, A and Vecchio, A and Wimmer-Schweingruber, RF and Ho, GC and Gomez-Herrero, R and Rodriguez-Pacheco, J and Louarn, P and Fedorov, A and Owen, CJ and Bruno, R and Livi, S and Zouganelis, I and Muller, D},
doi = {0004-6361/202141229},
journal = {Astronomy and Astrophysics: a European journal},
title = {Solar Orbiter's encounter with the tail of comet C/2019 Y4 (ATLAS): Magnetic field draping and cometary pick-up ion waves},
url = {http://dx.doi.org/10.1051/0004-6361/202141229},
volume = {656},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - ontext. Solar Orbiter is expected to have flown close to the tail of comet C/2019 Y4 (ATLAS) during the spacecraft’s first perihelion in June 2020. Models predict a possible crossing of the comet tails by the spacecraft at a distance from the Sun of approximately 0.5 AU.Aims. This study is aimed at identifying possible signatures of the interaction of the solar wind plasma with material released by comet ATLAS, including the detection of draped magnetic field as well as the presence of cometary pick-up ions and of ion-scale waves excited by associated instabilities. This encounter provides us with the first opportunity of addressing such dynamics in the inner Heliosphere and improving our understanding of the plasma interaction between comets and the solar wind.Methods. We analysed data from all in situ instruments on board Solar Orbiter and compared their independent measurements in order to identify and characterize the nature of structures and waves observed in the plasma when the encounter was predicted.Results. We identified a magnetic field structure observed at the start of 4 June, associated with a full magnetic reversal, a local deceleration of the flow and large plasma density, and enhanced dust and energetic ions events. The cross-comparison of all these observations support a possible cometary origin for this structure and suggests the presence of magnetic field draping around some low-field and high-density object. Inside and around this large scale structure, several ion-scale wave-forms are detected that are consistent with small-scale waves and structures generated by cometary pick-up ion instabilities.Conclusions. Solar Orbiter measurements are consistent with the crossing through a magnetic and plasma structure of cometary origin embedded in the ambient solar wind. We suggest that this corresponds to the magnetotail of one of the fragments of comet ATLAS or to a portion of the tail that was previously disconnected and advected past the spacec
AU  - Matteini,L
AU  - Laker,R
AU  - Horbury,T
AU  - Woodham,L
AU  - Bale,SD
AU  - Stawarz,JE
AU  - Woolley,T
AU  - Steinvall,K
AU  - Jones,GH
AU  - Grant,SR
AU  - Afghan,Q
AU  - Galand,M
AU  - O'Brien,H
AU  - Evans,V
AU  - Angelini,V
AU  - Maksimovic,M
AU  - Chust,T
AU  - Khotyaintsev,Y
AU  - Krasnoselskikh,V
AU  - Kretzschmar,M
AU  - Lorfevre,E
AU  - Plettemeier,D
AU  - Soucek,J
AU  - Steller,M
AU  - Stverak,S
AU  - Travnicek,P
AU  - Vaivads,A
AU  - Vecchio,A
AU  - Wimmer-Schweingruber,RF
AU  - Ho,GC
AU  - Gomez-Herrero,R
AU  - Rodriguez-Pacheco,J
AU  - Louarn,P
AU  - Fedorov,A
AU  - Owen,CJ
AU  - Bruno,R
AU  - Livi,S
AU  - Zouganelis,I
AU  - Muller,D
DO  - 0004-6361/202141229
PY  - 2021///
SN  - 0004-6361
TI  - Solar Orbiter's encounter with the tail of comet C/2019 Y4 (ATLAS): Magnetic field draping and cometary pick-up ion waves
T2  - Astronomy and Astrophysics: a European journal
UR  - http://dx.doi.org/10.1051/0004-6361/202141229
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000730246400011&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/95620
VL  - 656
ER  -
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