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Prisma the Instruments

Published online by Cambridge University Press:  12 April 2016

Andrew Jones*
Affiliation:
Institute of Physics and Astronomy, Århus University, DK-8000 Århus C, Denmark

Extract

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Our understanding of Solar structure has increased dramatically in the last couple of decades thanks mainly to the opening of new windows of observation providing high quality data to theoreticians with access to powerful computing facilities. Two of the new windows were UV and X-ray images of the Sun, allowing a detailed view of the upper solar atmosphere, and the development of very high resolution spectrometers allowing us to exploit the solar oscillations to probe the internal structure of the Sun. It is the goal of PRISMA to extend these techniques to other stars, which using the Sun as a calibration point will allow us to explore stellar structure and evolution in ways not possible now.

In this poster I will present a possible selection of instruments able to achieve this goal, and explain some of the rationale in their design. A more general overview is presented by T. Appouchaux also in these proceedings. It must be stressed that these are not the definitive instruments to be flown on PRISMA, but rather result from a study to show the feasibility of such a mission. Should PRISMA be chosen as the next ESA medium sized mission, an ‘Announcement of Opportunity’ wiH be issued by ESA and the responses of all people interested in constructing the instrument will be considered.

Type
VII. Activity, a break of spherical symmetry
Copyright
Copyright © Astronomical Society of the Pacific 1993

References

Appourchaux, T., Catala, C., Catalano, S., Frandsen, S., Jones, A., Lemaire, P., Pace, O., Volonté, S., Weiss, W. 1991PRISMA Probing Rotation and Interior of Stars: Micro variability and Activity - Report on the Assessment StudyESA SCI(91)5 Google Scholar
Pottasch, E.M., Butcher, H.R., van Hoesel, F.H.J. 1992 ‘Solar like oscillations on a Centauri A’ To appear in Astronomy and Astrophysics.CrossRefGoogle Scholar