# Large Amplitude Plasma Waves Near the Comet C-G Diamagnetic Cavity Boundary: What Are They and What is the Role for Cometary Plasma Dynamics?

Bruce Tsurutani, Barbara Falkowski, Charlotte Goetz, Pierre Henri, Xavier Vallieres, Rajkumar Hajra, Martin Volwerk, Kathrin Altwegg, Karl-Heinz Glassmeier

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Bruce Tsurutani, Barbara Falkowski, Charlotte Goetz, Pierre Henri, Xavier Vallieres, et al.. Large Amplitude Plasma Waves Near the Comet C-G Diamagnetic Cavity Boundary: What Are They and What is the Role for Cometary Plasma Dynamics?. 19th EGU General Assembly, Apr 2017, Vienne, Austria. pp.2672. insu-03568157

HAL Id: insu-03568157

https://insu.hal.science/insu-03568157

Submitted on 12 Feb 2022

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# Large Amplitude Plasma Waves Near the Comet C-G Diamagnetic Cavity Boundary: What Are They and What is the Role for Cometary Plasma Dynamics?

Bruce Tsurutani (1), Barbara Falkowski (1,2), Charlotte Goetz (3), Pierre Henri (4), Xavier Vallieres (4), Rajkumar Hajra (4), Martin Volwerk (5), Kathrin Altwegg (6), and Karl-Heinz Glassmeier (3)

(1) Jet Propulsion Laboratory MS169-506, California Institute of Technology, Pasadena, CA United States (bruce.tsurutani@jpl.nasa.gov), (2) Glendale Community College, Glendale, CA, USA, (3) Institut fuer Geophysik und Extraterrestrische Physik, TU Braunschweig, Braunschweig, Germany, (4) LPC2E CNRS Orleans, France, (5) Institut fuer Weltraumforschung, Oesterreichische Akademie der Wissenschaft, Graz, Austria, (6) Physikalisches Institut, Univ. Bern, Bern, Switzerland

Large amplitude plasma waves detected adjacent to and just outside the comet diamagnetic cavity boundary at comet 67P have been studied using the combined magnetic field, thermal electron and neutral particle measurements. The boundary waves appear to be steepened shocks. However the nature of the shocks appears to be different for inbound passes and for outbound passes. These differences will be illustrated in detail and the possible role that the shocks/waves play in cometary plasma dynamics will be discussed.