Zobrazeno 1 - 10
of 243
pro vyhledávání: '"Brajša R"'
Autor:
Matković, F., Brajša, R., Kuhar, M., Benz, A. O., Ludwig, H. -G., Selhorst, C. L., Skokić, I., Sudar, D., Hanslmeier, A.
The Atacama Large Millimeter/submillimeter Array (ALMA) allows for solar observations in the wavelength range of 0.3$-$10 mm, giving us a new view of the chromosphere. The measured brightness temperature at various frequencies can be fitted with theo
Externí odkaz:
http://arxiv.org/abs/2402.18978
Autor:
Matković, F., Brajša, R., Temmer, M., Heinemann, S. G., Ludwig, H. -G., Saar, S. H., Selhorst, C. L., Skokić, I., Sudar, D.
Publikováno v:
A&A 670, A146 (2023)
This study investigates and compares brightness and area of coronal bright points (CBPs) inside and outside of coronal holes (CHs) using the single-dish Band 6 observations by the Atacama Large Millimeter/submillimeter Array (ALMA), combined with ext
Externí odkaz:
http://arxiv.org/abs/2212.09443
Publikováno v:
A&A 669, A156 (2023)
The (sub)millimeter radiation of solar flares is poorly understood. Without spatial resolution, it cannot be compared easily to flare emissions in other wavelengths. The Atacama Large Millimeter-submillimeter Array (ALMA) offers sufficient resolution
Externí odkaz:
http://arxiv.org/abs/2211.16935
Autor:
Beljan, I. Poljančić, Jurdana-Šepić, R., Jurkić, T., Brajša, R., Skokić, I., Sudar, D., Ruždjak, D., Hržina, D., Pötzi, W., Hanslmeier, A., Veronig, A. M.
Publikováno v:
A&A 663, A24 (2022)
We determined the differential rotation (DR) parameters $A$ and $B$ (corresponding to the equatorial rotation velocity and the gradient of the solar DR) by tracing sunspot groups in sunspot drawings of the Kanzelh\"ohe Observatory for Solar and Envir
Externí odkaz:
http://arxiv.org/abs/2204.07396
Publikováno v:
Central European Astrophysical Bulletin, 44, (2020) 2, 1-11
Images of the Sun at millimeter wavelengths obtained by ALMA show a significant correspondence with the magnetograms. In this paper, we investigate this correspondence by comparing ALMA full-disk solar image taken at 1.2 mm with a SDO/HMI magnetogram
Externí odkaz:
http://arxiv.org/abs/2203.11747
Publikováno v:
Central European Astrophysical Bulletin, 45, (2021) 1, 1-7
Ru{\dj}er Bo\v{s}kovi\'c developed methods for determination of solar rotation elements: the solar equator inclination i, the longitude of the node {\Omega} and the period of solar rotation. In his last work Opera pertinentia ad opticam et astronomia
Externí odkaz:
http://arxiv.org/abs/2203.11745
The minimum - maximum method, belonging to the precursor class of the solar activity forecasting methods, is based on a linear relationship between relative sunspot number in the minimum and maximum epochs of solar cycles. In the present analysis we
Externí odkaz:
http://arxiv.org/abs/2203.11293
Autor:
Roša, D., Hržina, D., Husak, M., Brajša, R., Špoljarić, D., Skokić, I., Maričić, D., Šterc, F., Romštajn, I.
This paper focuses on the observations of sunspots made by Ru{\dj}er Bo\v{s}kovi\'c in 1777. We derived the expressions needed to calculate the elements of the Sun's rotation and period from observations. We used modern ephemeris data in the processi
Externí odkaz:
http://arxiv.org/abs/2203.01898
Autor:
Brajsa, R., Skokic, I., Sudar, D., Benz, A. O., Krucker, S., Ludwig, H. -G., Saar, S. H., Selhorst, C. L.
Publikováno v:
A&A 651, A6 (2021)
Aims. The main aim of the present analysis is to decipher (i) the small-scale bright features in solar images of the quiet Sun and active regions obtained with the Atacama Large Millimeter/submillimeter Array (ALMA) and (ii) the ALMA correspondence o
Externí odkaz:
http://arxiv.org/abs/2105.03644
Autor:
Skokić, I., Brajša, R.
Publikováno v:
Rudarsko-geolo\v{s}ko-naftni zbornik (2019) 34(2), pp. 59-65
An online software tool for the easy preparation of ephemerides of the solar surface features is presented. It was developed as a helper tool for the preparation of observations of the Sun with the Atacama Large Millimeter/submillimeter Array (ALMA),
Externí odkaz:
http://arxiv.org/abs/1904.08263