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- Crimean Astrophysical ObservatoryUA4 papers
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4 papers · 1 filter
Gravitational strings. Do we see one?
S. V. Krasnikov
I present a class of objects called gravitational strings (GS) for their similarity to the conventional cosmic strings: even though the former are just singularities in flat spacet…
Dynamical evolution and spectral characteristics of the stellar group Mamajek 2
E. Jilinski, V. G. Ortega, R. de la Reza +2
The dynamical evolution of the recently detected stellar group Mamajek 2 is studied by means of its past 3D orbit. The past orbits of the open clusters NGC 2516 and Persei, bel…
Opacity in compact extragalactic radio sources and its effect on astrophysical and astrometric studies
Y. Y. Kovalev, A. P. Lobanov, A. B. Pushkarev +1
The apparent position of the "core" in a parsec-scale radio jet (a compact, bright emitting region at the narrow end of the jet) depends on the observing frequency, owing to synchr…
Electrostatic interaction of a pointlike charge with a wormhole
S. Krasnikov
A pointlike electric charge at rest is considered in the spacetime which is a wormhole connecting two otherwise Minkowskian spaces. The potential (i. e. a solution of the Maxwell e…