271 citations · 942 across the 30 of their papers we have counts for
9 papers · 1 filter
Tracing dark energy with quasars
J. Średzińska, B. Czerny, M. Bilicki +7
The nature of dark energy, driving the accelerated expansion of the Universe, is one of the most important issues in modern astrophysics. In order to understand this phenomenon, we…
Quasars as tracers of cosmic flows
J. Modzelewska, B. Czerny, M. Bilicki +6
Quasars, as the most luminous persistent sources in the Universe, have broad applications for cosmological studies. In particular, they can be employed to directly measure the expa…
SALT long-slit spectroscopy of CTS C30.10: two-component Mg II line
J. Modzelewska, B. Czerny, K. Hryniewicz +7
Quasars can be used as a complementary tool to SN Ia to probe the distribution of dark energy in the Universe by measuring the time delay of the emission line with respect to the c…
SALT long-slit spectroscopy of LBQS 2113-4538: variability of the Mg II and Fe II component
K. Hryniewicz, B. Czerny, W. Pych +4
The Mg II line is of extreme importance in intermediate redshift quasars since it allows us to measure the black hole mass in these sources and to use these sources as probes of th…
Absorption features in the quasar HS 1603+3820 II. Distance to the absorber from photoionisation modelling
A. Rozanska, M. Nikolajuk, B. Czerny +4
We present photoionisation modelling of the intrinsic absorber in the bright quasar HS 1603+3820. We construct spectral energy distribution using optical/UV/X-ray observations as a…
Towards equation of state of dark energy from quasar monitoring: Reverberation strategy
B. Czerny, K. Hryniewicz, I. Maity +3
High redshift quasars can be used to deduce the distribution of dark energy in the Universe, as a complementary tool to SN Ia. The method is based on determination of the size of t…