Confirmation of a Faraday Rotation Measure Anomaly in Cygnus

We confirm the reality of a reversal of the sign of the Faraday Rotation Measure in the Galactic plane in Cygnus (Lazio et al, 1990), possibly associated with the Cygnus OB1 association. The rotation measure changes by several hundred rad/m$^2$ over an angular scale of $2-5^{\circ}$. We show that a simple model of an expanding plasma shell with an enhanced density and magnetic field, consistent with observations of H$\alpha$ emission in this part of sky, and physically associated with a superbubble of the Cygnus OB1 association, can account for the magnitude and angular scale of this feature.Comment: Submitted to the Astrophysical Journa

Searches for the Shell Swept up by the Stellar Wind from Cyg OB2

We investigated the kinematics of ionized gas in an extended (20 degrees by 15 degrees) region containing the X-ray Superbubble in Cygnus with the aim of finding the shell swept up by a strong wind from Cyg OB2. H-alpha observations were carried out with high angular and spectral resolutions using a Fabry-Perot interferometer attached to the 125-cm telescope at the Crimean Observatory of the Sternberg Astronomical Institute. We detected high-velocity gas motions, which could result from the expansion of the hypothetical shell at a velocity of 25-50 km/s. Given the number of OB stars increased by Knoedlseder (2000) by an order of magnitude, Cyg OB2 is shown to possess a wind that is strong enough [Lw ~= (1-2)x10^39 erg/s] to produce a shell comparable in size to the X-ray Superbubble and to a giant system of optical filaments. Based on our measurements and on X-ray and infrared observations, we discuss possible observational manifestations of the shell swept up by the wind.Comment: 14 pages, Astronomy Letter

Studying of demographic ageing in Central and Eastern European countries

Демографическое развитие и социально-демографические риски регионов и стран в условиях глобализацииВ статье выделены основные этапы изучения демографического старения в странах Центральной и Восточной Европы, исследованы подходы ученых этих стран к изучению проблемы старения населения = Main stages of the study of demographic ageing in Central and Eastern Europe are identified in the article, approaches of scientists of these countries to study the aging population are analyze

Studying of demographic ageing in Central and Eastern European countries

Демографическое развитие и социально-демографические риски регионов и стран в условиях глобализацииВ статье выделены основные этапы изучения демографического старения в странах Центральной и Восточной Европы, исследованы подходы ученых этих стран к изучению проблемы старения населения = Main stages of the study of demographic ageing in Central and Eastern Europe are identified in the article, approaches of scientists of these countries to study the aging population are analyze