Software tool for automatic detection of solar plages in the Coimbra Observatory spectroheliograms

Autor: Barata, T., Carvalho, S., Dorotovic, I., Pinheiro, F., Garcia, A., Fernandes, J., Lourenco, A. M.

Publikováno v: Astronomy and Computing, Volume 24, 2018, Pages 70-83, ISSN 2213-1337, https://doi.org/10.1016/j.ascom.2018.06.003

Full-disk spectroheliograms have been taken in Coimbra on a daily basis since 1926 in the Ca II K-line (K1 and K3). Later, in 1989, with the upgrade of the equipment it was possible to start the observations in the H-alpha line. The spectroheliograms

Externí odkaz: http://arxiv.org/abs/1811.08389

On standing sausage waves in photospheric magnetic waveguides

Autor: Dorotovic, I., Erdelyi, R., Freij, N., Karlovsky, V., Marquez, I.

By focusing on the oscillations of the cross-sectional area and the intensity of magnetic waveguides located in the lower solar atmosphere, we aim to detect and identify magnetohydrodynamic (MHD) sausage waves. Capturing several series of high-resolu

Externí odkaz: http://arxiv.org/abs/1210.6476

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North-South Asymmetry of Ca II K Plages

Autor: Dorotovic, I., Journoud, Patrice, Rybák, J., Sýkora, J.

Publikováno v: ASP Conference series
The Physics of Chromospheric Plasmas
The Physics of Chromospheric Plasmas, Oct 2006, Coimbra, Portugal, Portugal. pp.527

International audience

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2417::afbdb0ebe40a286d4c3c8a695f3280dd
https://hal.science/hal-03809228

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