153 citations · 339 across the 23 of their papers we have counts for
4 papers · 1 filter
Distribution of Radio Spectral Slopes of Galaxies in Optical Diagnostic Diagrams
Michal Zajaček, Andreas Eckart, Silke Britzen +1
For about 500 intermediate-redshift sources (), whose radio flux densities at are larger than 10 mJy, we performed additional observations at 4.85 GHz…
Quasars from LSST as dark energy tracers: first steps
Mary Loli Martínez-Aldama, Swayamtrupta Panda, Bożena Czerny +1
In the near future, new surveys promise a significant increase in the number of quasars (QSO) at large redshifts. This will help to constrain the dark energy models using quasars.…
Reverberation-mapping of distant quasars: time-lag determination using different methods
Michal Zajaček, Bożena Czerny, Mary-Loli Martinez Aldama +1
By applying different statistically robust methods, we analyze the time-lag between the continuum and ionized line-emission (Mg II line) light curves for the distant bright quasar…
Electric charge of black holes: Is it really always negligible?
Michal Zajaček, Arman Tursunov
We discuss the problem of the third black hole parameter, an electric charge. While the mass and the spin of black holes are frequently considered in the majority of publications,…