Helium in the Earth's foreshock: a global Vlasiator survey

Battarbee, Markus; Blanco-Cano, Xóchitl; Turc, Lucile; Kajdič, Primož; Johlander, Andreas; Tarvus, Vertti; Fuselier, Stephen; Trattner, Karlheinz; Alho, Markku; Brito, Thiago; Ganse, Urs; Pfau-Kempf, Yann; Akhavan-Tafti, Mojtaba; Karlsson, Tomas; Raptis, Savvas; Dubart, Maxime; Grandin, Maxime; Suni, Jonas; Palmroth, Minna

doi:https://doi.org/10.5194/angeo-38-1081-2020

Articles | Volume 38, issue 5

https://doi.org/10.5194/angeo-38-1081-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/angeo-38-1081-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 38, issue 5

Regular paper

|

20 Oct 2020

Regular paper |

| 20 Oct 2020

Helium in the Earth's foreshock: a global Vlasiator survey

Markus Battarbee, Xóchitl Blanco-Cano, Lucile Turc, Primož Kajdič, Andreas Johlander, Vertti Tarvus, Stephen Fuselier, Karlheinz Trattner, Markku Alho, Thiago Brito, Urs Ganse, Yann Pfau-Kempf, Mojtaba Akhavan-Tafti, Tomas Karlsson, Savvas Raptis, Maxime Dubart, Maxime Grandin, Jonas Suni, and Minna Palmroth

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Final revised paper (published on 20 Oct 2020)
Preprint (discussion started on 25 May 2020)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Battarbee et al., 2020, Helium in the Earth’s foreshock: a global Vlasiator survey', Jeffrey Broll, 27 Jun 2020
- AC2: 'Response to referee comment 1 by Jeffrey Broll', Markus Battarbee, 04 Aug 2020
RC2: 'Referee Repart on Batterbee et al.', David Sibeck, 29 Jun 2020
- AC1: 'Response to referee comment 2 by David Sibeck', Markus Battarbee, 04 Aug 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish as is (05 Aug 2020) by Nick Sergis

AR by Markus Battarbee on behalf of the Authors (14 Aug 2020) Author's response Manuscript

Short summary

We investigate the dynamics of helium in the foreshock, a part of near-Earth space found upstream of the Earth's bow shock. We show how the second most common ion in interplanetary space reacts strongly to plasma waves found in the foreshock. Spacecraft observations and supercomputer simulations both give us a new understanding of the foreshock edge and how to interpret future observations.