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Armagh Observatory

Francesco Berrilli, Paolo Soffitta, Marco Velli, Paolo Sabatini, Alberto Bigazzi, Ronaldo Bellazzini, Luis Ramon Bellot Rubio, Alessandro Brez, Vincenzo Carbone, Gianna Cauzzi,j Fabio Cavallini,j Giuseppe Consolini, Fabio Curti, Dario Del Moro, Anna Maria Di Giorgio, Ilaria Ermolli, Sergio Fabiani, Marianne Faurobert, Alex Feller, Klaus Galsgaard, Szymon Gburek, Fabio Giannattasio, Luca Giovannelli, Johann Hirzberger, Stuart M. Jefferies Maria S. Madjarska, Fabio Manni, Alessandro Mazzoni, Fabio Muleri, Valentina Penza, Giovanni Peres, Roberto Piazzesi, Francesca Pieralli, Ermanno Pietropaolo, Valentin Martinez Pillet, Michele Pinchera, Fabio Reale, Paolo Romano, Andrea Romoli, Marco Romoli, Alda Rubini, Pawel Rudawy, Paolo Sandri, Stefano Scardigli, Gloria Spandre, Sami K. Solanki, Marco Stangalini, Antonio Vecchio, and Francesca Zuccarellob

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

Figure q. Sampling points for (a) Fe 617.3 nm and (b) Ca 854.2 nm lines in the case of standard spectro-polarimetric mode. Proposed sampling wavelengths are represented as triangles on the wavelength axis. The dashed line is the observed solar disk-center Fourier transform spectrometer spectrum.71; The solid line is the measured solar spectrum considering ISODY+ passband and a 1% of stray light contribution. The crosses mark the expected measures by the standard spectropolarimetric mode. ISODY+ passband (dotted line) has been estimated from the IBIS72; passband shape.

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-Pe´rot interferometers, whose design is optimized to the acquisition of highest cadence, long-duration, multiline spec- tropolarimetric 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.

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Last Revised: 2016 January 18th