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9 papers · 2 filters
Study of Gamma Ray Burst Binary Progenitors
Krzysztof Belczynski, Tomasz Bulik, Bronislaw Rudak
Recently much work in studying Gamma-Ray Burst has been devoted to revealing the nature of outburst mechanism and studies of GRB afterglows. These issues have also been closely fol…
FIRST-based survey of Compact Steep Spectrum sources I. MERLIN images of arc-second scale objects
M. Kunert, A. Marecki, R. E. Spencer +2
Compact Steep Spectrum (CSS) sources are powerful extragalactic radio sources with angular dimensions of the order of a few arcseconds or less. Such a compactness is apparently lin…
Topological Lensing: Is the Matter Both Here and There?
B. F. Roukema, A. Marecki, S. Bajtlik +1
If the Universe satisfies a perturbed Friedmann-Lema\^ıtre model, then the bright matter (e.g. radio-loud active galactic nuclei, RLAGNs) may be topologically lensed by global geom…
Non-linear evolution of thermally unstable slim accretion discs with a diffusive form of viscosity
Ewa Szuszkiewicz, John C. Miller
We are carrying out a programme of non-linear time-dependent numerical calculations to study the evolution of the thermal instability driven by radiation pressure in transonic accr…
An analysis of the observed radio emission from planetary nebulae
N. Siodmiak, R. Tylenda
We have analysed the radio fluxes for 264 planetary nebulae for which reliable measurements of fluxes at 1.4 and 5 GHz, and of nebular diameters are available. For many of the inve…
Evaluating GAIA performances on eclipsing binaries. I. Orbits and stellar parameters for V505 Per, V570 Per and OO Peg
U. Munari, T. Tomov, T. Zwitter +7
The orbits and physical parameters of three detached, double-lined A-F eclipsing binaries have been derived combining H_P, V_T, B_T photometry from the Hipparcos/Tycho mission with…