... The most powerful and widely used methods to calculate the scattering matrix of a fractal cluster are based on the coupled dipoles methods (e.g. the Discrete Dipole Approximation, DDA) and the theory of light scattering by a cluster of spherical particles [2-4]. ... At present the procedure of calculation of the scattering matrix is well developed for both an oriented cluster of spherical particles and for chaotically oriented clusters of such particles [4]. ...

... In one situation, we can use light from quasars to probe the material between us and them because that light may pass through one or more galaxies or gas clouds on its way to us. The gas inside the galaxies or the intergalactic clouds acts then as a filter, absorbing selected wavelengths from the quasar light. ... Light from a quasar must pass through clouds of gas and even faint galaxies -- each leaving its imprint on the light -- before we receive it here on Earth. ... Gravitational lensing . ...

... Compact Binaries . ... Unlike the Sun, most stars in our Galaxy orbit another star: these systems are called binary stars. Generally it takes many years for the two stars to orbit around each other. ... These binaries are interesting for many reasons. One is that they are predicted to emit lots of gravitational waves. ... Over time as gravitational waves are emitted, the time taken for the two stars to orbit one another changes by a small but measurable amount. ...

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Clusters of galaxies are the largest gravitationally bounded structures in the Universe dominated by dark matter. We review the observational appearance and physical models of plasma structures in clusters of galaxies. ... The knowledge of the complex dynamical and feedback processes is necessary to understand the energy and matter balance as well as to constrain the role of the non-thermal components of clusters. ...

... Rastorguev A.S. et al. Cepheids and open clusters statistical parallaxes (1999) . Dambis A.K. Rastorguev A.S. - RR Lyrae absolute magnitudes and kinematics (2001) . Zabolotskikh M.V. Rastorguev A.S. Dambis A.K. - Kinematics of young populations (2002) . Rastorguev A.S. Dambis A.K. Zabolotskikh M.V. - Cepheids and RR Lyrae stars as the standard candles (2005) . ... Rastorguev A.S. - Variable stars, distance scale, globular clusters (astro-ph 1001.1648, 2010) In English . ...

. Album : asv-album :: Travels to distant places and countries :: 1997/08 Kyoto, Nara (Japan) :: 25/08 Kyoto Botanical Garden . Up . << Prev . Model of the typical Japanese garden. Almost all details are present: moss, rocks, trees, stone lanterns, bamboo fence. Only pond is missing. Next >> . Album created by album a free tool by David Ljung on Tue Jun 23 14:46:26 2015 .

... Стильная юбка изготовлена из легкого материала в сеточку и имеет однотонный подъюбник. Юбка с поясом на резинке застегивается на потайную застежку-молнию. В этой модной и в то же время комфортной юбке вы будете чувствовать себя женственной и привлекательной. ...

Decomposition of Galaxy Images and Galaxy Rotation Curves Mosenkov A.V.*^, Savchenko S.S.*, Sotnikova N.Ya.* ... The DECA (DEComposition Analysis) code is designed to investigate images of galaxies in an automatic regime (using the simple 'bulge+disc' model) as well as in manual mode for more detailed images and/or for multicomponent structures. ... The GRCF package was created for performing the galaxies rotation curve decomposition using the models of the bulge, the disc, and the dark halo. ...

ПЕРЕЛ?К ПУБЛ?КАЦ?Й СП?ВРОБ?ТНИК?В ГАО . ... 2015 . ... 2014 . ... Хода О.А. Центр анализа ГНСС - данных ГАО НАН Украины: результаты обработки наблюдений для GPS - недель 1400 ? ...

Astronotes Armagh Planetarium's Stellar Blog! ... Colin Johnston . ... Our Galaxy . ... To locate it, look along the imaginary line between the two end stars on the leading edge of the PloughтАЩs blade (Merak and Dubhe) and Polaris (the North Star), the galaxy M82 (also known as the Cigar Galaxy) along with its companion M81, lies just off this line about a third of the way between the Plough and Polaris. €а€аAs usual, the supernova is far brighter than its home galaxy, appearing as an extra star. ...

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... Field of research: Extragalactic astronomy. ... NASA Astrophysics Data System (ADS) Abstract Service . ... CADC Home Page . ... CCD Images of Galaxies . ... RUSSIAN LINKS . ... UA Astronomy Personal Home Page - Bill Keel . ... The Shape of the Rotation Curves of Edge-on Galaxies, by A.V.Zasov and A.V.Khoperskov, 2003. ... A Thickness of Stellar Discs, by A.V.Zasov, and D.V.Bizyaev, 2003 . Minimum Velocity Dispersion in Stable Stellar Disks, by A.V.Khoperskov, A.V.Zasov, and N.V.Tyurina, 2003 . ...

... Shustov B.M., Wiebe D.S. Dust expelling from the Galaxy ( abstract from the journal ). Astronomy Reports , 1995, 39 , 578-586 [AZh, 72 , 650-659]. Wiebe D.S., Shematovich V.I., Shustov B.M. Chemical and dynamical evolution of protostellar clouds: initial stages of collapse ( abstract from the journal ). ... Shustov B.M., Wiebe D.S., Tutukov A.V. Evolution of disk galaxies and loss of heavy elements into the intracluster medium. ... ApJ (Letters), 1998, 503 , L71-L74 ( astro-ph/9806155 ). ...

... Равновесные самогравитирующие конфигурации в присутствии темной энергии: скопления галактик' . ... 1).Dark energy and key physical parameters of clusters of galaxies G.S. Bisnovatyi-Kogan ћ A.D. Chernin Astrophys Space Sci (2012) 338:337-343 . 2)A brief analysis of self-gravitating polytropic models with a non-zero cosmological constant (Research Note). M. Merafina , G. S. Bisnovatyi-Kogan ,, and S. O. Tarasov , A&A 541, A84 (2012) . ...

... The study of the Large-scale structure of the Universe and measurements of the Dark Energy equation of state; The exploration of the growth and cosmological evolution of supermassive Black holes in the Universe. ... In course of the all sky survey SRG will discover about 100 000 galaxy clusters and 3 million AGNs. Galaxy clusters are the largest gravitationally bounded objects in the Universe and are best explored through the study of X-ray emission from the hot intergalactic gas. ... 2016 IKI RAN ...

... Bad Astronomy . Misconceptions . ... Bitesize Astronomy . ... The Nine Planets . ... The webpages on this and other sites give lots of details, but I thought it might help if I made a brief synopsis of the arguments I and others make to debunk this pseudoscientific silliness. ... The Sun is not acting in any way abnormally. There are not more earthquakes than normal. ... This is exactly the same sort of bad logic used in the earthquake argument, and is just as wrong. ... 2008 Phil Plait. ...

Working session on Standard Candles Chair: F. Haberl · Definition of standard candles Sources with constant X-ray flux: white dwarfs isolated neutron stars supernova remnants cluster of galaxies · Scientific drivers for accurate absolute fluxes neutron star radii cosmology (e.g. total mass of galaxy clusters, Sunyaev Zeldovic effect) · Calibration purposes absolute flux ...

... IAU planet classification Observing with a Telescope Large Scale Structure The observables: Local Group (size 1 Mpc) Virgo cluster (size 2+ Mpc) Virgo supercluster (size ~33 Mpc) Voids (size ~ 10-150 Mpc), Walls and sheets, aka filaments (size ~ 50-80+ Mpc) 1 parsec The nearest star is 1.2 parsecs away (Proxima Centuri). ... Virgo supercluster Voids, Sheets Filaments The Virgo Cluster is a cluster of galaxies at a distance of about 18.0 Mpc away in the constellation Virgo. ...

... Сегодня: 10 апреля 2016 г. Комиссия Клебанова проверит "адекватность пилотов Ту-154", разбившегося под Иркутском. ... В частности, по его словам, комиссия собирается отправится в Екатеринбург, откуда в прошлый вторник начался последний полет разбившегося Ту-154. ... Окончательная картина катастрофы, по словам вице-премьера выглядит так: при подлете к Иркутску, где у Ту-154 была промежуточная посадка, самолетом управлял второй пилот, а первый пилот руководил его действиями. ...