Steepening of magnetosonic waves in the inner coma of comet 67P/Churyumov–Gerasimenko

Ostaszewski, Katharina; Glassmeier, Karl-Heinz; Goetz, Charlotte; Heinisch, Philip; Henri, Pierre; Park, Sang A.; Ranocha, Hendrik; Richter, Ingo; Rubin, Martin; Tsurutani, Bruce

doi:https://doi.org/10.5194/angeo-39-721-2021

Articles | Volume 39, issue 4

https://doi.org/10.5194/angeo-39-721-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/angeo-39-721-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 39, issue 4

Regular paper

| Highlight paper

|

29 Jul 2021

Regular paper | Highlight paper |

| 29 Jul 2021

Steepening of magnetosonic waves in the inner coma of comet 67P/Churyumov–Gerasimenko

Katharina Ostaszewski, Karl-Heinz Glassmeier, Charlotte Goetz, Philip Heinisch, Pierre Henri, Sang A. Park, Hendrik Ranocha, Ingo Richter, Martin Rubin, and Bruce Tsurutani

Supplement

https://doi.org/10.5194/angeo-39-721-2021-supplement

Data sets

Planetary Science Archive ESA https://archives.esac.esa.int/psa/

PDS archive NASA https://pds.nasa.gov/

Clawpack (Conservation Laws Package) Clawpack development team http://www.clawpack.org

Clawpack Repositories Clawpack development team https://github.com/clawpack

Rosetta science events Rosetta Team https://www.cosmos.esa.int/web/rosetta/science

IMF sector boundaries L. Svalgaard https://www.leif.org/research/sblist.txt

Short summary

Plasma waves are an integral part of cometary physics, as they facilitate the transfer of energy and momentum. From intermediate to strong activity, nonlinear asymmetric plasma and magnetic field enhancements dominate the inner coma of 67P/CG. We present a statistical survey of these structures from December 2014 to June 2016, facilitated by Rosetta's unprecedented long mission duration. Using a 1D MHD model, we show they can be described as a combination of nonlinear and dissipative effects.