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EUVITA - an extreme UV imaging telescope array with spectral capability

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Abstract

EUVITA is a set of 8 extreme UV and soft X-ray normal incidence imaging telescopes, each of them sensitive in a narrow band (λ/Δλ=15 to 80), centered at wavelengths between 50 and 175 Å. Each telescope has an effective area of a few cm2, a field of view of 1.2° and an angular resolution of 10 arcseconds. EUVITA will be Sown on the Russian mission SPECTRUM X-G. This satellite will be launched in a highly eccentric orbit with a period of 4 days, allowing long, uninterrupted observations (e.g. 105 seconds). The present paper includes an overview of EUVITA's scientific capabilities and a short description of the instrument. Simulations of various types of sources show EUVITA's capability to detect galactic and extragalactic EUV sources. EUVITA's narrow spectral bands allow the measurement of source parameters such as temperature or power law index as well as interstellar absorption, and will resolve groups of strong lines emitted by optically thin hot plasmas.

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Authors and Affiliations

  1. Geneva Observatory, 1290, Sauverny, Switzerland

    J. -L. Courvoisier, A. Orr & P. Bühler

  2. Paul Scherrer Institute, 5232, Villigen-PSI, Switzerland

    P. Bühler, A. Zehnder, R. Henneck, F. Stauffacher, J. Biakhowski, N. Schlumpf, W. Schoeps & A. Mchedlishvili

  3. Russian Academy of Sciences, Space Research Institute (IKI), Moscow, CIS

    R. Sunyaev, V. Aref'ev, A. Yascovich, G. Babalyan & M. Pavlinsky

  4. Institut d'Astrophysique Spatiale, France

    J. P. Delaboudinière

  5. Space Science Laboratory (SSL), Berkeley, USA

    T. Carone, 0. Siegmund & J. Warren

  6. University of Calgary, Canada

    D. Leahy

  7. Institute of Applied Physics, Nizhny Novgorod, CIS

    N. Salaschenko & J. Platonov

Authors
  1. J. -L. Courvoisier
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  2. A. Orr
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  3. P. Bühler
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  4. A. Zehnder
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  5. R. Henneck
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  6. F. Stauffacher
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  7. J. Biakhowski
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  8. N. Schlumpf
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  9. W. Schoeps
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  10. A. Mchedlishvili
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  11. R. Sunyaev
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  12. V. Aref'ev
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  13. A. Yascovich
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  14. G. Babalyan
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  15. M. Pavlinsky
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  16. J. P. Delaboudinière
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  17. T. Carone
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  18. 0. Siegmund
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  19. J. Warren
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  20. D. Leahy
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  21. N. Salaschenko
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  22. J. Platonov
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Courvoisier, J.L., Orr, A., Bühler, P. et al. EUVITA - an extreme UV imaging telescope array with spectral capability. Exp Astron 4, 117–135 (1993). https://doi.org/10.1007/BF01588349

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  • DOI: https://doi.org/10.1007/BF01588349

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