Journal
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
Volume 66, Issue -, Pages -Publisher
OXFORD UNIV PRESS
DOI: 10.1093/pasj/psu085
Keywords
Sun: granulation; Sun: magnetic fields; Sun: oscillations; Sun: photosphere
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Funding
- Astronomy Australia Limited
- Multi-modal Australian ScienceS Imaging and Visualisation Environment (MASSIVE)
- Australian Research Council's Future Fellowship [FT120100057]
- Science and Technology Facilities Council [ST/H000429/1] Funding Source: researchfish
- Australian Research Council [FT120100057] Funding Source: Australian Research Council
- STFC [ST/H000429/1] Funding Source: UKRI
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Using numerical simulations of the magnetized solar photosphere carried out with the radiative magneto-hydrodynamic code, MURaM, and detailed spectro-polarimetric diagnostics of the simulated photospheric 6302 angstrom FeI line, spectro-polarimetric signatures of Alfven waves in magnetized intergranular lanes of the simulated solar photosphere were analysed at different positions at the solar disk. The torsional Alfven waves in the intergranular lanes are horizontal plasma motions, which do not have a thermal perturbation counterpart. We find signatures of Alfven waves as small-scale line profile Doppler shifts and Stokes-V area asymmetry enhancements in the simulated off-disk centre observations. These photospheric features disappear when the simulated observations are degraded with a telescope point spread function (PSF) similar to the one of Hinode. We analyse the possibilities for direct observations and confirmation of Alfven wave presence in the solar photosphere.
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