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Running umbral/penumbral waves - The GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR Solar Telescope - First Halpha Spectra from 7 October 2013

Author: Klaus Gerhard Puschmann
Affiliation: Martinstr. 64, 64285 Darmstadt, Germany

Main category: Natural Sciences (Astronomy)

Caption:
Halpha Time series recorded with the GREGOR Fabry-Perot Interferometer @ the 1.5m GREGOR Solar Telescope on 7 October 2013. Left to right/top to bottom: Velocity @ 90% & 17% Line Depression (LD); Bisector Width @ 17%, 33%, 50% & 83% LD; Broadband- & Line-Wing Intensity; Intensity @ 17%, 33%, 50%, 83% and 100% LD; Prominent feature: Sunspot running umbral/penumbral waves with increasing height.


Further information:
Reconstructed Time Series of the first Hα-Spectra ever observed with the GREGOR Fabry-Perot Interferometer @ 1.5m GREGOR Solar Telescope, recorded on 7 October 2013. The broadband reconstructions have been performed with a modified version (Puschmann & Sailer, 2006, A&A 454, 1011) of the Göttingen broadband reconstruction code (de Boer, 1993, PHD-Thesis) accounting for the field dependent correction of Adaptive Optics. The narrow-band data have been deconvolved using a modified version of a code developed by K. Janssen, 2003, PHD-Thesis, which is based on the method of Keller & v.d. Luehe, 1992, A&A 261, 321. The codes are part of the GFPI-Datapipeline (Puschmann & Beck, 2011, A&A 533, 21) iSPOR-DP, Imaging Spectropolarimetric Parallel Organized Reconstruction Data Pipeline. The data have been processed on iSPOR-S, the Imaging Spectropolarimetric Parallel Organized Reconstruction Server.


Further Reading: The GREGOR Fabry Perot Interferometer (GFPI) - Technical Innovations and Results achieved in 2013; K.G. Puschmann; arXiv e-print - arXiv:1602.05783 - http://adsabs.harvard.edu/abs/2016arXiv160205783P

Language: English

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