아래와 같이 세미나를 진행하오니
관심있는 분들의 많은 참여를 바랍니다.
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● 날짜 : 2015년 3월 10일 (화요일)
● 시간 : 16시 30분
● 장소 : 천문대 영상실
● 강사 : Prof. S. Solanki, KHU, Max Planck Institute for Solar System Research
Title : The Polarimetric and Helioseismic Imager on Solar Orbiter
Abstract :
The Solar Orbiter is the next solar physics mission of the European Space Agency, ESA, in collaboration with NASA, with a launch planned in 2018. The spacecraft is designed to approach the Sun to within 0.28 AU at perihelion of a highly eccentric orbit. The proximity with the Sun will also allow the Sun to be observed at uniformly high resolution at EUV and visible wavelengths. Such observations are central for learning more about the magnetic coupling of the solar atmosphere. At a later phase in the mission the spacecraft will leave the ecliptic and study the enigmatic poles of the Sun from a heliographic latitude of up to 33.5 degrees.
A central instrument of Solar Orbiter is the Polarimetric and Helioseismic Imager, SO/PHI. It will do full Stokes imaging in the Lande g=2.5 Fe I 617.3 nm line. It is composed of 2 telescopes, a full- disk telescope and a high-resolution telescope, that will allow observations at a resolution as high as 200 km on the solar surface. SO/PHI will also be the first solar polarimeter to leave the Sun-Earth line, opening up new possibilities, such as stereoscopic polarimetry (besides stereoscopic imaging of the photosphere and tereoscopic helioseismology). Finally, SO/PHI will have a unique view of the solar poles, allowing not just more precise and exact measurements of the polar field than possible so far, but also enabling us to follow the dynamics of individual magnetic features at high latitudes and to determine solar surface and sub-surface flows right up to the poles. In this presentation an introduction to the Solar Orbiter mission will be given, followed by the science goals and the capabilities of SO/PHI, as well as a brief overview of the instrument and of the current status of its development.
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