Demonstration of Chromospheric Magnetic Mapping with CLASP2.1
Informazioni aggiuntive
Autori
McKenzie D.,
Ishikawa R.,
Bueno J. T. .,
Auch`ere F.,
Kobayashi K.,
Winebarger A.,
Kano R.,
Song D.,
Okamoto T.,
Kobelski A.,
Rachmeler L.,
Pontieu B. D. .,
Vigil G.,
Belluzzi L.,
Alsina Ballester E.,
Aleman T. P. .,
Bethge C.
Tipo
Contributo in atti di conferenza
Anno
2023
Lingua
Inglese
Abstract
Probing the magnetic nature of the Sun's chromosphere requiresmeasurement of the polarization profiles of relevantmagnetically sensitive spectral lines, many of which are in theultraviolet spectrum, necessitating observations above theabsorbing terrestrial atmosphere. The CLASP series of soundingrocket missions were designed to develop and test a techniquefor observing the Sun in ultraviolet light, and for quantifyingthe polarization of that light. By demonstrating successfulmeasurement and interpretation of the polarization in hydrogenLyman-ensuremathalpha and the Mg II h and k spectrallines, these missions are crucial steps towards routinequantitative characterization of the local thermal and magneticconditions in the solar chromosphere. In the most recentobservations, CLASP2.1, the spectrograph slit was scanned acrossan active region plage to acquire a two-dimensional map ofStokes V/I, to demonstrate the ability of UV spectropolarimetryto yield chromospheric magnetic fields over a large area. Thetechnique yields a set of simultaneous line-of-sightmagnetograms at multiple heights within the plage atmosphere. Bycombining the CLASP2.1 measurements with magnetograms fromHinode/SOT or SDO/HMI, a wide range of atmospheric heights aremapped, from the photosphere to the upper chromosphere.
Atti di conferenza
AAS/Solar Physics Division Meeting
Collana
AAS/Solar Physics Division Meeting
Pagina inizio
401.04-
