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Solar-C Mission - Advancing Solar and Heliospheric Physics

Solar-C is a mission aimed at understanding solar and heliospheric magnetic activity, developing algorithms for solar activity prediction, and studying the magnetic coupling of different layers of the solar atmosphere. It will provide high-resolution imaging and spectroscopic data to help unravel the mysteries of the Sun. The mission is a joint collaboration between JAXA, NASA, and ESA.

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Solar-C Mission - Advancing Solar and Heliospheric Physics

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  1. Opening address & Objective of the meeting T. Watanabe (NAOJ) + 4th Solar-C Science Meeting SOC

  2. Solar-C Science Meeting Chronology 2008 Solar-C science definition meeting (sagamihara) 2010 Solar-C science definition meeting (sagamihara) Plan A vs Plan B International sub-working groups LEMUR to ESA/M-class mission (Europe/US) 2010 1st Solar-C science meeting (palermo) 2011 Mar Interim repot & Decision to the Plan B 2011 2nd Solar-C scince meeting (boston) 2012 3rd Solar-C science meeting (st.andrews) Heliophysics decadal survey (US) 2013 4th Solar-C scinece meeting (takayama) 2014 Mission Proposal to JAXA

  3. watanabe Progress reports for mission proposal Discussion for refining the proposal de pontieu IRIS initial results A pursuing high of resolution a. photosph. magnet. Field b. UV capability B maximing of space weather study kusano

  4. Solar-C Mission Goals T. Watanabe (NAOJ) + Solar-C WG（ISAS/JAXA） + Office for Solar-C (NAOJ）

  5. Solar-C mission Mission Goals Understand solar and heliospheric magnetic activity Develop and observationally test algorithms for solar activity prediction Develop an understanding of the magnetic couplingof convection zone – photosphere – chromosphere – transition region and corona Solar-C Model Payloads SUVIT: UV Optical IR Telescope Aperture: 1.5 m diameter Focal Instruments: wide & narrow band imager spectropolarimeter (2D) XIT: X-ray Imaging Telescope Normal incidence EUV imager angular res.: 0.2" arcsec (optional) Grazing incidence soft X-ray imager CMOS-based Ph-counting with 1" ang. res. EUVST (UV/)EUV ImagingSpectrometer/LEMUR Angular resolution: 0.3 arcsec Wavelength: 17-130 nm Temperature coverage: 0.01 - 20 MK • Expected achievements • 3D magnetic structure in the solar atmosphere • - Solar flare prediction – contribution to SW and SSA • - Chromospheric and coronal heating - Origin of solar wind • - Fundamental plasma processes - Magnetic reconnection Distinct features - a fundamentally new way of viewing the entire solar atmosphere, essentially with the same high spatial and temporal resolution, in addition to performing simultaneous high resolution spectropolarimetric measurements for the first time. - a very challenging mission to design, develop, scientifically and technically, and to deliver an order-of-magnitude improvement over present measurement capabilities. International task shares Spacecraft JAXA Launch vehicle JAXA SUVIT Large-aperture telescope JAXA (with feed optics to focal plane) Primary/secondary mirror ESA (with test flat) Focal plane instrument Filtergraph NASA Spectro-polarimeter JAXA-led international consortium EUVST ESA/NASA XIT Normal incidence NASA Grazing incidence (optional) TBD Project status/plan - JAXA-based working group with more than 70 members & contributors from JAXA, NAOJ, Kyoto U., Nagoya U., Riken, NIST, LMSAL/US, HAO/US, HSAC/US, MPS/DE, IAC/ES, and MSSL/UK [Working group PI: Tetsuya Watanabe (NAOJ)] - Selected as one of eight most important future projects by astronomy/astrophysics division of Science Council of Japan - Recognized as one of key future JAXA missions in solar and heliospheric physics - Expected to include substantial contributions from the United States and Europe - To be ready for Mission Proposalin FY2013 - Target launch year ~2020. US-Japan Collaboration • NASA contribution: It is a high priority of the SHP Panel that NASA and its partners form a Science and Technology Definition Team for Solar-C as soon as possible. The panel expects that NASA contributions would involve the most technically challenging elements, such as the focal-plane packages (cameras, detectors, and so on), which would afford the U.S. science community an opportunity to make critical advances in remote-sensing capabilities. • The total cost to NASA through Phase E should be capped at $250 million. Solar-C presents a unique opportunity for solar and space physics to make flagship-level science advances for the cost of an Explorer. Schedules (earliest possible) FY2014: Pre-project (phase-A) FY2015-16: Basic design (phase-B), PDR FY2016-17: Detailed design (phase-C), CDR FY2018-20: Fabrication, testing (phase-D), PQR/PSR FY2020 - : Launch, Operation (phase-E)

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