Chromospheric Lyman-alpha spectro-polarimeter (CLASP)

0388139 - ASÚ 2013 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Kano, R. - Bando, T. - Narukage, N. - Ishikawa, R. - Tsuneta, S. - Katsukawa, Y. - Kubo, M. - Ishikawa, S. - Hara, H. - Shimizu, T. - Suematsu, Y. - Ichimoto, K. - Sakao, T. - Goto, M. - Kato, Y. - Imada, S. - Kobayashi, K. - Holloway, T. - Winebarger, A. - Cirtain, J. - de Pontieu, B. - Casini, R. - Trujillo Bueno, J. - Štěpán, Jiří - Sainz, R.M. - Belluzzi, L. - Ramos, A.A. - Auchere, F. - Carlsson, M.
Chromospheric Lyman-alpha spectro-polarimeter (CLASP).
Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray. Bellingham: International Society for Optical Engineering, 2012, 84434F/1-84434F/17. Proceedings of SPIE, 8443. ISBN 9780819491442.
[Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray. Amsterdam (NL), 01.07.2012-06.07.2012]
Institucionální podpora: RVO:67985815
Klíčová slova: chromospheric magnetic field
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika

Over the last few years, significant progress has been made in the spectral line formation of UV lines as well as the MHD modeling of the solar atmosphere. It is found that the Hanle effect in the Lyman-alpha line (121.567 nm) is a most promising diagnostic tool for weaker magnetic fields in the chromosphere and transition region. Based on this groundbreaking research, we propose the Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP) to NASA as a sounding rocket experiment, for making the first measurement of the linear polarization produced by scattering processes and the Hanle effect in the Lyman-alpha line (121.567 nm), and making the first exploration of the magnetic field in the upper chromosphere and transition region of the Sun. The CLASP instrument consists of a Cassegrain telescope, a rotating 1/2-wave plate, a dual-beam spectrograph assembly with a grating working as a beam splitter, and an identical pair of reflective polarization analyzers each equipped with a CCD camera.
Trvalý link: http://hdl.handle.net/11104/0216960