The presented catalogue contains a list of all chromospheric flares of importance 2+, 3, and 3+, observed during the years 1859-1956, together with ionospheric disturbances, geomagnetic storms and aurorae possibly connected with them. All papers discussing problems connected with these flares and their geophysical consequences are summarized in the index of literature.
This paper presents measurements of the polarization of light in the tails of the comets Arend-Roland and Mrkos, made in the total photographic light. Results given in Tables II and V indicate that the tail of the Arend-Roland comet contained a substantial dust component, while the polarization in the tail of the Mrkos comet can be explained predominantly by pure molecular emission.
This Paper is a continuation of four proceeding lists, which contained flares observed at Ondřejov since 1948 up to the end of June, 1957. This list presents data abour 727 flares, associated 536 Mc/s outburst, and atmospheries observed and recorded during the I. G. Y. Curves of the H2 line-width changes for all these flares are plotted in Fig. 1-15.
The paper shows that the deviations of the plane of polarisation from the normal direction found by us are due to scattering of the polarised lights of the corona on ice-crystals in high layers of troposphere. Nevertheless, the deviations in the equatorial regions can hardly be explained in this way, and they seem to be real. and Součástí článku jsou fotografie s popisky v angličtině (nestránkováno)