127 citations · 380 across the 13 of their papers we have counts for
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Comparative analysis of Debrecen sunspot catalogues
L. Győri, A. Ludmány, T. Baranyi
Sunspot area data are important for studying solar activity and its long term variations. At the Debrecen Heliophysical Observatory, we compiled three sunspot catalogues: the Debre…
Heritage of Konkoly's Solar Observations: the Debrecen Photoheliograph Programme and the Debrecen Sunspot Databases
T. Baranyi, L. Győri, A. Ludmány
The primary task of the Debrecen Heliophysical Observatory (DHO) was to produce the detailed and reliable photographic documentation of the solar photospheric activity since 1958.…
On-line Tools for Solar Data Compiled at the Debrecen Observatory and their Extensions with the Greenwich Sunspot Data
T. Baranyi, L. Győri, A. Ludmány
The primary task of the Debrecen Heliophysical Observatory (DHO) has been the most detailed, reliable, and precise documentation of the solar photospheric activity since 1958. This…
Statistical study of spatio-temporal distribution of precursor solar flares associated with major flares
N. Gyenge, I. Ballai, T. Baranyi
The aim of the present investigation is to study the spatio-temporal distribution of precursor flares during the 24-hour interval preceding M- and X-class major flares and the evol…
An alternative measure of solar activity from detailed sunspot datasets
Judit Muraközy, Tünde Baranyi, András Ludmány
The sunspot number is analyzed by using detailed sunspot data, including aspects of observability, sunspot sizes, and proper identification of sunspot groups as discrete entities o…
Active Longitude and Solar Flare Occurrences
N. Gyenge, A. Ludmány, T. Baranyi
The aim of the present work is to specify the spatio-temporal characteristics of flare activity observed by the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) and Ge…