A Statistical Inference Method for Interpreting the CLASP Observations

0494400 - ASÚ 2019 RIV US eng J - Journal Article
Štěpán, Jiří - Trujillo Bueno, J. - Belluzzi, L. - Asensio Ramos, A. - Sainz, R.M. - del Pino Aleman, T. - Casini, R. - Kano, R. - Winebarger, A. - Auchere, F. - Ishikawa, A. - Narukage, N. - Kobayashi, K. - Bando, T. - Katsukawa, Y. - Kubo, M. - Ishikawa, S. - Giono, G. - Hara, H. - Suematsu, Y. - Shimizu, T. - Sakao, T. - Tsuneta, S. - Ichimoto, K. - Cirtain, J. - Champey, P. - de Pontieu, B. - Carlsson, M.
A Statistical Inference Method for Interpreting the CLASP Observations.
Astrophysical Journal. Roč. 865, č. 1 (2018), č. článku 48. ISSN 0004-637X. E-ISSN 1538-4357
R&D Projects: GA ČR(CZ) GA16-16861S
Institutional research plan: CEZ:AV0Z1003909
Institutional support: RVO:67985815
Keywords : statistical methods * polarization * radiative transfer
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 5.580, year: 2018

On 2015 September 3, the Chromospheric Lyman-Alpha SpectroPolarimeter (CLASP) successfully measured the linear polarization produced by scattering processes in the hydrogen Ly alpha line of the solar disk radiation, revealing conspicuous spatial variations in the Q/I and U/I signals. Via the Hanle effect, the line-center Q/I and U/I amplitudes encode information on the magnetic field of the chromosphere-corona transition region, but they are also sensitive to the three-dimensional structure of this corrugated interface region. With the help of a simple line-formation model, here we propose a statistical inference method for interpreting the Ly alpha line-center polarization observed by CLASP.
Permanent Link: http://hdl.handle.net/11104/0287604