Zobrazeno 1 - 10
of 299
pro vyhledávání: '"Wöhl, H."'
Autor:
Beljan, I. Poljančić, Jurdana-Šepić, R., Brajša, R., Sudar, D., Ruždjak, D., Hržina, D., Pötzi, W., Hanslmeier, A., Veronig, A., Skokić, I., Wöhl, H.
Publikováno v:
A&A 606, A72 (2017)
The main aim of this work is to determine the solar differential rotation by tracing sunspot groups during the period 1964-2016, using the Kanzelh\"ohe Observatory for Solar and Environmental Research (KSO) sunspot drawings and white light images. Tw
Externí odkaz:
http://arxiv.org/abs/1707.07886
The goal of this paper is to investigate Reynolds stresses and to check if it is plausible that they are responsible for angular momentum transfer toward the solar equator. We also analysed meridional velocity, rotation velocity residuals and correla
Externí odkaz:
http://arxiv.org/abs/1401.5641
Existing methods for conversion between synodic and sidereal rotation velocities of the Sun are tested for validity using state of the art ephemeris data. It is found that some of them are in good agreement with ephemeris calculations, while the othe
Externí odkaz:
http://arxiv.org/abs/1310.0778
Publikováno v:
Astronomy & Astrophysics, Vol. 511, id. A14, 10 pp., (2010)
We investigate the temporal evolution of magnetic flux emerging within a granule in the quiet-Sun internetwork at disk center. We combined IR spectropolarimetry performed in two Fe I lines at 1565 nm with speckle-reconstructed G-band imaging. We dete
Externí odkaz:
http://arxiv.org/abs/0910.4449
Publikováno v:
Modern solar facilities - advanced solar science, Editors: F. Kneer, K. G. Puschmann, A. D. Wittmann, p. 139 (2007)
We derive correlation coefficients between temperature and line-of-sight velocity as a function of optical depth throughout the solar photosphere for the non-magnetic photosphere and a small area of enhanced magnetic activity. The maximum anticorrela
Externí odkaz:
http://arxiv.org/abs/0704.0603
Akademický článek
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Autor:
Brajša, R.1 romanb@geof.hr, Wöhl, H.2, Vršnak, B.1, Rušdjak, V.1, Clette, F.3, Hochedez, J.-F.3, Verbanac, G.4, Temmer, M.5
Publikováno v:
Solar Physics. Sep2005, Vol. 231 Issue 1/2, p29-44. 16p. 2 Charts, 6 Graphs.
Whole-disc full-resolution solar images taken in the extreme ultraviolet part of the spectrum (Fe XV line at 28.4 nm) with the EIT instrument on board the SOHO spacecraft were used to visually identify coronal bright points appropriate for solar rota
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=57a035e5b1ae::e2e7c5b00c8e4323624bb21202826060
https://www.bib.irb.hr/403437
https://www.bib.irb.hr/403437
Autor:
Brajša, Roman, Benz, A. O., Temmer, M., Jurdana-Šepić, Rajka, Šaina, B., Wöhl, H., Ruždjak, Vladimir
Previous observations indicate that coronal holes generally appear as low brightness temperature regions in microwaves. However, within their borders local enhancements of radiation often occur. This is confirmed by comparing a full-disc solar image
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=57a035e5b1ae::d657f2522df6a108821448932f8ab6d6
https://www.bib.irb.hr/313824
https://www.bib.irb.hr/313824
Various observations indicate that coronal holes generally appear as low brightness temperature regions (LTRs) in the centimeter and millimeter wavelength ranges. However, within their borders local enhancements of radiation, that is, high brightness
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=57a035e5b1ae::f8c7233d81bbc713696d16d7606c5a9d
https://www.bib.irb.hr/313714
https://www.bib.irb.hr/313714