Zobrazeno 1 - 10
of 573
pro vyhledávání: '"Harrington, David P."'
Autor:
Schad, Thomas A., Petrie, Gordon J. D., Kuhn, Jeffrey R., Fehlmann, Andre, Rimmele, Thomas, Tritschler, Alexandra, Woeger, Friedrich, Scholl, Isabelle, Williams, Rebecca, Harrington, David, Paraschiv, Alin R., Szente, Judit
Publikováno v:
Science Advances, Vol. 10, no. 37, adq1604, 2024
Regular remote sensing of the magnetic field embedded within the million-degree solar corona is severely lacking. This reality impedes fundamental investigations of the nature of coronal heating, the generation of solar and stellar winds, and the imp
Externí odkaz:
http://arxiv.org/abs/2410.21568
We present a new approach for correcting instrumental polarization by modeling the non-depolarizing effects of a complex series of optical elements to determine physically realizable Mueller matrices. Provided that the Mueller matrix of the optical s
Externí odkaz:
http://arxiv.org/abs/2204.03732
The DKIST is designed to deliver accurate spectropolarimetric calibrations across a wide wavelength range and large field of view for solar observations. Instruments deliver spectral resolving powers up to 300,000 in multiple cameras of several instr
Externí odkaz:
http://arxiv.org/abs/1905.10370
Data products from high spectral resolution astronomical polarimeters are often limited by fringes. Fringes can skew derived magnetic field properties from spectropolarimetric data. Fringe removal algorithms can also corrupt the data if the fringes a
Externí odkaz:
http://arxiv.org/abs/1803.08987
Autor:
Harrington, David M., Snik, Frans, Keller, Christoph U., Sueoka, Stacey R., van Harten, Gerard
We outline polarization fringe predictions derived from a new application of the Berreman calculus for the Daniel K. Inouye Solar Telescope (DKIST) retarder optics. The DKIST retarder baseline design used 6 crystals, single-layer anti-reflection coat
Externí odkaz:
http://arxiv.org/abs/1710.06067
We present the first measurement of the surface magnetic field of a late-M dwarf, LSR J1835+3259, with the help of the full-Stokes spectropolarimetry in the bands of diatomic molecules. Our magnetic field measurements at different rotational phases o
Externí odkaz:
http://arxiv.org/abs/1705.01590
We outline polarization performance calculations and predictions for the Daniel K. Inouye Solar Telescope (DKIST) optics and show Mueller matrices for two of the first light instruments. Telescope polarization is due to polarization dependent mirror
Externí odkaz:
http://arxiv.org/abs/1701.08327
Akademický článek
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The daytime sky has been recently demonstrated as a useful calibration tool for deriving polarization cross-talk properties of large astronomical telescopes. The Daniel K Inouye Solar Telescope (DKIST) and other large telescopes under construction ca
Externí odkaz:
http://arxiv.org/abs/1612.00538
Autor:
Harrington, David, Berdyugina, Svetlana, Chun, Mark, Ftaclas, Christ, Gisler, Daniel, Kuhn, Jeff
The Hokupa'a-85 curvature adaptive optics system components have been adapted to create a new AO-corrected coud\'{e} instrument at the 3.67m Advanced Electro-Optical System (AEOS) telescope. This new AO-corrected optical path is designed to deliver a
Externí odkaz:
http://arxiv.org/abs/1604.02738