Design status of ASPIICS, an externally occulted coronagraph for PROBA-3

Renotte, Étienne; Alia, Andres; Бемпорад, А.; Bernier, J.; Bramanti, Cristina; Buckley, Steve; Capobianco, Gerardo; Cernica, I.; Dániel, Vladimír; Darakchiev, Radoslav; Darmetko, Marcin; Debaize, Arnaud; Denis, François; Desselle, Richard; Vos, Lieve De; Dinescu, Adrian; Fineschi, Silvano; Fleury-Frenette, Karl; Focardi, M.; Fumel, A.; Galano, Damien; Galy, Camille; Gillis, Jean-Marie; Górski, Tomasz; Graas, Estelle; Graczyk, Rafał; Grochowski, Konrad; Halain, Jean-Philippe; Hermans, Aline; Howard, R. A.; Jackson, Carl; Janssen, Emmanuel; Kasprzyk, Hubert; Kosiec, J.; Koutchmy, S.; Kovačičinová, Jana; Kranitis, N.; Kurowski, Michal; Ladno, Michal; Lamy, Philippe; Landini, Federico; Lapáček, Radek; Lédl, Vít; Liébecq, Sylvie; Loreggia, D.; McGarvey, B.; Massone, G.; Melich, Radek; Mestreau-Garreau, Agnès; Mollet, Dominique; Mosdorf, Łukasz; Mosdorf, M.; Mroczkowski, Mateusz; Müller, Raluca; Nicolini, G.; Nicula, B.; O’Neill, Kevin; Orleański, P.; Palau, Marie-Catherine; Pancrazzi, M.; Paschalis, A.; Patočka, Karel; Peřestý, R.; Popescu, Irina; Psota, Pavel; Rataj, M.; Rautakoski, Jan; Romoli, M.; Rybecký, Roman; Salvador, Lucas; Servaye, Jean-Sébastien; Solomon, Cornel; Stockman, Yvan; Swat, Arkadiusz; Thizy, Cédric; Thome, Michel; Tsinganos, K.; Meulen, Jim Van der; Vooren, Nico Van; Vít, Tomáš; Walczak, Tomasz; Zarzycka, Alicja; Zender, Joe; Zhukov, A. N.

doi:10.1117/12.2186962

Cited by 22 publications

(8 citation statements)

References 2 publications

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“…Since streamers and CMEs are very bright structures, COR1 could provide additional information only about the large-scale structuring of the corona. Future experiments like the ASPIICS (Association of Spacecraft for Polarimetric and Imaging Investigation of the Corona of the Sun) coronagraph aboard the PROBA-3 (Project for On-Board Autonomy-3 ) mission (Lamy et al 2010;Renotte et al 2015;Galano et al 2018) will fill this observational gap with information on the fine structures and have a potential to improve our knowledge of how the coronal streamers are connected to the typical cusp structures that one can observe in the low corona.…”

Section: Discussionmentioning

confidence: 99%

Properties of Streamer Wave Events Observed during the STEREO Era

Decraemer

Zhukov

Doorsselaere

2020

ApJ

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Transverse waves are sometimes observed in solar helmet streamers, typically after the passage of a coronal mass ejection (CME). The CME-driven shock wave moves the streamer sideways, and a decaying oscillation of the streamer is observed after the CME passage. Previous works generally reported observations of streamer oscillations taken from a single vantage point (typically the SOHO spacecraft). We conduct a data survey searching for streamer wave events observed by the COR2 coronagraphs onboard the STEREO spacecraft. For the first time, we report observations of streamer wave events from multiple vantage points, by using the COR2 instrument on both STEREO A and B, as well as the SOHO/LASCO C2+C3 coronagraphs. We investigate the properties of streamer waves by comparing the different events and performing a statistical analysis. Common observational features give us additional insight on the physical nature of streamer wave events. The most important conclusion is that there appears to be no relation between the speed of the CME and the phase speed of the resulting streamer wave, indicating that the streamer wave speed is determined by the physical properties of the streamer rather than the properties of the CME. This result makes streamer waves events excellent candidates for coronal seismology studies. From a comparison between the measured phase speeds and the phase speeds calculated from the measured periods and wavelengths, we could determine that the speed of the post-shock solar wind flow in our streamers is around 300 km s −1 .

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Section: Discussionmentioning

confidence: 99%

Properties of Streamer Wave Events Observed during the STEREO Era

Decraemer

Zhukov

Doorsselaere

2020

ApJ

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“…Current space SOHO/Large Angle and Spectrometric Coronagraph [Brueckner et al, 1995] and STEREO/Sun Earth Connection Coronal and Heliospheric Investigation [Howard et al, 2008] coronagraphs operate from distances > 1.4 R ⊙ . This is a task for forthcoming space coronagraphs PROBA-3/ ASPIICS Mazzoli et al, 2010;Renotte et al, 2015] and Solar Orbiter/METIS [Fineschi et al, 2015]. It should be noted that indirect images are derived from the polarized brightness (pB) measured by K-coronameter of Mauna Loa observatory (MK4 MLSO, USA).The stray light [I stray ] and the sky [I sky ] are the main factors complicating the direct K-corona recording [I cont ].…”

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confidence: 99%

Imaging the structure of the low K‐corona

et al. 2017

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The first 2‐D distributions of the polarization angle and of the relative color index for the K‐corona of 29 March 2006 are presented. The distributions illustrate the efficiency of the total solar eclipse approach for high‐precision measurements of the K‐corona continuum in the range < 1.4 R⊙. Natural ground and space total solar eclipses caused by external occulting the bright solar‐disk light by the Moon or Earth group planets are discussed. Calculations of the eclipse magnitude m are carried out to show ideal conditions for total solar eclipse observations in space from Lagrange point L2 for Mars (m ≈ 1.025). The illumination in Mars' shadow is estimated to equal 5.6 × 10−11 for the wavelength of 550 nm. No internal or external occulting coronagraphs are needed. Partial solar eclipses with m > 0.91 can be observed from Lagrange points L2 for Mercury, Venus, and Earth.

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“…This mission (foreseen launch in 2021) will test the capability to perform the first ever coronagraphic observations in artificial eclipse condition: one spacecraft will carry the occulter for the second spacecraft at a distance of~150 m hosting the coronagraph; observations of the inner VL corona will be provided by maintaining the two spacecraft in formation-flying configuration, with a relative precision by~0.5 mm. Italian teams have been involved in the design of the ASPIICS instrument (Renotte et al, 2015).…”

Section: Space-based Instrumentation For the Observation Of The Solarmentioning

confidence: 99%

Current state and perspectives of Space Weather science in Italy

Plainaki

Antonucci²,

Бемпорад

et al. 2020

J. Space Weather Space Clim.

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Italian teams have been involved many times in Space Weather observational campaigns from space and from the ground, contributing in the advancing of our knowledge on the properties and evolution of the related phenomena. Numerous Space Weather forecasting and now-casting modeling efforts have resulted in a remarkable add-on to the overall progress in the field, at both national and international level. The Italian Space Agency has participated several times in space missions with science objectives related to Space Weather; indeed, an important field for the Italian scientific and industrial communities interested in Heliophysics and Space Weather, is the development of new instrumentation for future space missions. In this paper, we present a brief state-of-the-art in Space Weather science in Italy and we discuss some ideas on a long-term plan for the support of future scientific research in the related disciplines. In the context of the current roadmap, the Italian Space Agency aims to assess the possibility to develop a national scientific Space Weather data centre to encourage synergies between different science teams with interest in the field and to motivate innovation and new mission concept development. Alongside with the proposed recommendations, we also discuss how the Italian expertise could complement international efforts in a wider international Space Weather context.

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Design status of ASPIICS, an externally occulted coronagraph for PROBA-3

Cited by 22 publications

References 2 publications

Properties of Streamer Wave Events Observed during the STEREO Era

Properties of Streamer Wave Events Observed during the STEREO Era

Imaging the structure of the low K‐corona

Current state and perspectives of Space Weather science in Italy

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