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First results from the Solar Orbiter Heavy Ion Sensor

Livi, S; Lepri, ST; Raines, JM; Dewey, RM; Galvin, AB; Louarn, P; Collier, MR; ... Fedorov, A; + view all (2023) First results from the Solar Orbiter Heavy Ion Sensor. Astronomy & Astrophysics 10.1051/0004-6361/202346304. (In press). Green open access

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Abstract

Context. Aims. Solar Orbiter launched in February 2020 with the goal of revealing the connections between the Sun’s interior, atmosphere, and the heliosphere. The Solar Orbiter Heavy Ion Sensor (HIS) is a time-of-flight ion mass spectrometer dedicated to measuring heavy ions in the solar wind. Methods. We present an overview of the first measurements of heavy ion composition from HIS, reviewing the methods used to transform the spectra obtained on board into scientific data products and examining two solar wind case studies as well as the statistical properties of the heavy ion composition observed by HIS. We also carried out a comparison with prior measurements of heavy ions at L1. Results. The HIS data set provides the first mass- and charge-resolved heavy ion measurements in the inner heliosphere. Conclusions. These high temporal resolution data have the potential to transform our understanding of the connections between the solar wind and its origin at the Sun, as well as the interaction between the solar wind and the environment around planets, comets, and in the interstellar medium.

Type: Article
Title: First results from the Solar Orbiter Heavy Ion Sensor
Open access status: An open access version is available from UCL Discovery
DOI: 10.1051/0004-6361/202346304
Publisher version: https://doi.org/10.1051/0004-6361/202346304
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/10173159
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