5 papers · 1 filter
Search for Southern-Hemisphere Giant Radio Galaxies with SALT
J. Machalski, S Zola, D. Koziel +1
An extensive search for distant Giant radio galaxies on the southern hemisphere is justified. We emphasize the crucial role of optical spectroscopy in determination of their basic…
Spectral-ageing analysis of selected distant giant radio galaxies
M. Jamrozy, J. Machalski
Very deep 4.9 GHz observations with the VLA are used to supplement available radio maps at the frequencies of 325 MHz (WENSS survey) and 1.4 GHz (NVSS survey) in order to study the…
Redshift Measurements of Faint Distant Giant Radio Galaxies and Observational Constraints on their Jet Power and Dynamical Age
K. Chyzy, M. Jamrozy, S. J. Kleinman +6
The redshifts of faint radio galaxies identified with giant radio source candidates selected from the sample of Machalski et al. (2001) have been measured. Given the redshift, the…
Giant Radio Sources in View of the Dynamical Evolution of FRII-type Population
J. Machalski, K. Chyzy, M. Jamrozy
The time evolution of giant (D>1 Mpc) lobe-dominated galaxies is analysed on the basis of dynamical evolution of the entire FRII-type population.
The first simultaneous X-ray/gamma-ray observations of Cyg X-1 by Ginga and OSSE
Marek Gierlinski, Andrzej A. Zdziarski, W. Neil Johnson +3
We present the results of 4 simultaneous observations of Cygnus X-1 by Ginga and OSSE. The X-ray/gamma-ray spectra can be described by an intrinsic continuum and a component due to…