Demonstration of Chromospheric Magnetic Mapping with CLASP2.1
Additional information
Authors
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.
Type
Article in conference proceedings
Year
2023
Language
English
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.
Conference proceedings
AAS/Solar Physics Division Meeting
Series
AAS/Solar Physics Division Meeting
Start page number
401.04-
