Revisiting mirror modes in the plasma environment of comet 67P/Churyumov–Gerasimenko

Abstract B n anti-correlation and a new peak/dip identification method. We investigate the magnetic field measured by Rosetta from November 2014 to February 2016 and find 565 mirror mode signatures. Mirror modes were mostly found as single events, with only one mirror-mode-like train in our dataset. Also, the occurrence rate was compared with respect to the gas production rates, cometocentric distance and magnetic field strength, leading to a non-conclusive relation between these quantities. The lack of mirror mode wave trains may mean that mirror modes somehow diffuse and/or are overshadowed by the large-scale turbulence in the inner coma. The detected mirror modes are likely highly evolved as they were probably generated upstream of the observation point and have traversed a highly complex and turbulent plasma to reach their detection point. The plasma environment of comets behaves differently compared to planets and other objects in the solar system. Thus, knowing how mirror modes behave at comets could lead us to a more unified model for mirror modes in space plasmas.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Revisiting mirror modes in the plasma environment of comet 67P/Churyumov–Gerasimenko ; volume:41 ; number:2 ; year:2023 ; pages:569-587 ; extent:19 ; Annales geophysicae ; 41, Heft 2 (2023), 569-587 (gesamt 19)

Contributors, Places and Time

• Creator: Tello Fallau, Ariel ; Goetz, Charlotte ; Simon Wedlund, Cyril ; Volwerk, Martin ; Moeslinger, Anja

Further information

• DOI: 10.5194/angeo-41-569-2023
• URN: urn:nbn:de:101:1-2023121403202921480117
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 15.08.2025, 7:23 AM CEST