ADAHELI+: exploring the fast, dynamic Sun in the x-ray, optical, and near-infrared

Abstract

Abstract. Advanced Astronomy for Heliophysics Plus (ADAHELI+) is a project concept for a small solar and space weather mission with a budget compatible with an European Space Agency (ESA) S-class mission, including launch, and a fast development cycle. ADAHELI+ was submitted to the European Space Agency by a European-wide consortium of solar physics research institutes in response to the "Call for a small mission opportunity for a launch in 2017," of March 9, 2012. The ADAHELI+ project builds on the heritage of the former ADAHELI mission, which had successfully completed its phase-A study under the Italian Space Agency 2007 Small Mission Programme, thus proving the soundness and feasibility of its innovative low-budget design. ADAHELI+ is a solar space mission with two main instruments: ISODY+: an imager, based on Fabry-Pérot interferometers, whose design is optimized to the acquisition of highest cadence, long-duration, multiline spectropolarimetric images in the visible/near-infrared region of the solar spectrum. XSPO: an x-ray polarimeter for solar flares in x-rays with energies in the 15 to 35 keV range. ADAHELI+ is capable of performing observations that cannot be addressed by other currently planned solar space missions, due to their limited telemetry, or by ground-based facilities, due to the problematic effect of the terrestrial atmosphere. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

Flare Forecasting Algorithms Based on High-Gradient Polarity Inversion Lines in Active Regions

“…Cavallini et al 2002;Cavallini 2006;Scharmer et al 2008;Steward Puschmann et al 2012;Tadesse et al 2013;Del Moro et al 2017;Forte et al 2018Forte et al , 2020Giovannelli et al 2020) or on-board satellites (e.g. Scherrer et al 1995Scherrer et al , 2012Peter et al 2012;Berrilli et al 2015;Suematsu et al 2017) can be used to detect PILs. The R value is defined in (Schrijver 2007) and is a measure of the unsigned photospheric magnetic flux close to selected PILs, where an appropriate weighting map is applied for the SOHO/MDI instrument.…”

Current state and perspectives of Space Weather science in Italy

“…4.3.3 X-ray polarimetric imaging to reveal the nature of the polarization of hard X-ray sources in the solar atmosphere X-ray polarimetry of solar flares could be a new tool for novel research in the field of Space Weather science (Hardi et al, 2012;Berrilli et al, 2015), being a powerful diagnostic of the properties of the magnetic field and of the plasma acceleration regions in the Sun's atmosphere. Indeed, direct electromagnetic information from the reconnection region associated with the CME is likely the fastest alert of the entire event.…”

The Tor Vergata Synoptic Solar Telescope (TSST): A robotic, compact facility for solar full disk imaging

“…The overall budget need for the TSST is ∼ 50 ke, while, for instance, instruments based on Fabry-Pérot interferometers with similar magnetic performance require ∼ 300 ke just for the etalons and controllers components (see e.g. Berrilli et al 2010Berrilli et al , 2015. As far as robotization and remote control of the telescope are concerned, we collaborated with highly experienced groups, and we have purchased components, telescope mount and dome controlled by off-the-shelf software packages.…”