Comparison of Scattering Polarization Signals Observed by CLASP: Possible Indication of the Hanle Effect
Informazioni aggiuntive
Autori
Ishikawa R.,
Bueno J. T. .,
Uitenbroek H.,
Kubo M.,
Tsuneta S.,
Goto M.,
Kano R.,
Narukage N.,
Bando T.,
Katsukawa Y.,
Ishikawa S.,
Giono G.,
Suematsu Y.,
Hara H.,
Shimizu T.,
Sakao T.,
Winebarger A.,
Kobayashi K.,
Cirtain J.,
Champey P.,
Auch`ere F.,
Štěpán J.,
Belluzzi L.,
Ramos A. A. .,
Sainz R. M. .,
Pomtieu B. D. .,
Ichimoto K.,
Carlsson M.,
Casini R.
Tipo
Contributo in atti di conferenza
Anno
2019
Lingua
Inglese
Abstract
The Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP; Kano et al. 2012; Kobayashi et al. 2012; Kubo et al. 2014) observed, for the first time, the linear polarization produced by scattering processes in the hydrogen Lyman-ensuremathalpha (121.57 nm) and Si III (120.56 nm) lines of the solar disk radiation. The complexity of the observed scattering polarization (i.e., conspicuous spatial variations in Q/I and U/I at spatial scales of 10″–20″ and the absence of center-to- limb variation at the Lyman-ensuremathalpha center; see Kano et al. 2017) motivated us to search for possible hints of the operation of the Hanle effect by comparing: (a) the Lyman-ensuremathalpha line center signal, for which the critical field strength (B$_Ħ$) for the onset of the Hanle effect is 53 G, (b) the Lyman-ensuremathalpha wing, whic
Atti di conferenza
Astronomical Society of the Pacific Conference Series
Collana
Astronomical Society of the Pacific Conference Series
Pagina inizio
305
Parole chiave
irsol-conference-proceedings
