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Count-based imaging model for the Spectrometer/Telescope for Imaging X-rays (STIX) in Solar Orbiter
DOI: 10.1051/0004-6361/201935323 Bibcode: 2019A&A...624A.130M

Massa, Paolo; Piana, Michele; Benvenuto, Federico +1 more

The Spectrometer/Telescope for Imaging X-rays (STIX) will study solar flares across the hard X-ray window provided by the Solar Orbiter cluster. Similarly to the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI), STIX is a visibility-based imaging instrument that will require Fourier-based image reconstruction methods. However, in this…

2019 Astronomy and Astrophysics
SolarOrbiter 22
Elemental composition in quiescent prominences
DOI: 10.1051/0004-6361/201935147 Bibcode: 2019A&A...625A..52P

Vial, J. -C.; Parenti, S.; Del Zanna, G.

Context. The first ionization potential (FIP) bias is currently used to trace the propagation of solar features ejected by the wind and solar eruptions (coronal mass ejections). The FIP bias also helps us to understand the formation of prominences, as it is a tracer for the solar origin of prominence plasma.
Aims: This work aims to provide el…

2019 Astronomy and Astrophysics
SOHO SolarOrbiter 14
Full inversion of solar relativistic electron events measured by the Helios spacecraft
DOI: 10.1051/0004-6361/201834520 Bibcode: 2019A&A...624A...3P

Lario, D.; Heber, B.; Aran, A. +2 more

Context. The Parker Solar Probe and the incoming Solar Orbiter mission will provide measurements of solar energetic particle (SEP) events at close heliocentric distances from the Sun. Up to present, the largest data set of SEP events in the inner heliosphere are the observations by the two Helios spacecraft.
Aims: We re-visit a sample of 15 s…

2019 Astronomy and Astrophysics
SolarOrbiter 12