... The picture shows a 2-dimensional sketch of the outflowing wind of a quasar (Elvis 2000, Astrophysical Journal , vol.545, p.63-76). In the funnel-shaped disk wind Elvis (2000) model a wind arises from a restricted range of radii on the accretion disk around the central black hole. Initially the wind makes a large angle to the disk plane (and so is roughly cylindrical). ... Looking through the quasi-cylindrical part of the wind we see UV and X-ray warm absorbers. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Information & tools for observers . ... Observers archives tools & information . ... Next Section: Fitting Rotation Curves: Mass . ... Although the approximately flat rotation curves of gas in the outskirts of spirals is generally taken as strong evidence for spherical, isothermal dark matter halos, this conclusion is often incorrect and always model-dependent. ... Fitting Rotation Curves: Mass Models Kinematics ....

... The Moon’s surface is covered with the great number of ring structures - ring mountain (circuses) and by shocked origin (meteoritic) (see the Moon craters and their peculiarity ). ... The temperature in the Moon surface is changing from 400 to 100K. The composition and structure of the Moon. ... There is difference in the mineralogical composition of the Moon and of the Earth: for example, the oxides of iron in the Moon basalt are 25% - more, and titan - 13% more then in the terrestrial. ...

. Pulkovo Observatory of Russian Academy of Sciences is situated . near Saint-Petersburg. It was founded in 1839. 196140, Saint-Petersburg, Pulkovskoye chaussee 65/1 . English version . Russian version . This page has been accessed times since May 1, 1999.

. Language [RU/EN] Search: . Home . UP . Research . Projects . Services . Info . News . Events . Personal . Archive . Ionosphere and radiowave propagation: structure . The main page . Information . Publications: . 2011 - 2015 . 2009 - 2010 . 2007 - 2008 . 2005 - 2006 . 2000 - 2004 . 1995 - 1999 . Participation in International symposiums and conferences: . 2013 - 2015 . 2011 - 2012 . 2009 - 2010 . 2007 - 2008 . 2005 - 2006 . 2002 - 2004 . N.V. Pushkov . 09/04/2016 23:52 MSK . webmaster@izmiran.ru .

Class 1 Introduction, Background History of Modern Astronomy The Night Sky, Eclipses and the Seasons Kepler's Laws Newtonian Gravity General Relativity Matter and Light Telescopes Class 2 Solar System Characteristics Formation Exosolar Planets Class 3 Stars The Sun Stellar Evolution of Low and High Mass Stars Deaths of Stars Exotic Stars Class 4 Galaxies Galaxy Classification Formation of Galaxies Galactic Evolution ... So far, one planet has been studied by this method. ...

... In a solar prominence, charged particles stream up from the Sun, spiraling around magnetic field structures poking out of the solar surface, and ultimately fall back along those structures into the Sun. ... As evolution would predict, animals' eyes sense the colors of light emitted most strongly by the Sun. ... The tiny Moon can completely cover the disk of the Sun, blocking most of the emitted visible light, and reveal the Sun's faint outer atmosphere called the corona...a mass of incandescent gas ...

... Animation of the neutral hydrogen data cube from Westerbork. ... VIRGOHI 21 was a dark galaxy candidate discovered in 2005 it was found to contain no starlight down to a very low surface-brightness level, yet its velocity structure implied that it had a mass of 10 10 10 11 solar masses. ... VIRGOHI 21 was first observed in the 21-cm line of neutral hydrogen with the Lovell telescope at Jodrell Bank Observatory and the detection was confirmed using the Arecibo telescope ( Davies et al. ...

... Bad Astronomy . ... Bitesize Astronomy . ... Bad Astro Store . ... Site Info . ... It is from from Voyager 1 and shows a whopping big impact crater dominating the profile of the moon. Note that Mimas is about 400 kilometers across (about 250 miles). ... The wall around the crater is 5 kilometers high, and that central peak rises 6 kilometers above the surface (many impact craters have a large central peak which is caused by a pressure rebound from the impact). ... 2008 Phil Plait. ...

... Samara State Aerospace University Staff Semkin Nikolay Danilovich . ... Semkin N.D. , Voronov K.E. , Telegin A.M. and others. ... 2015. ... Semkin N.D. , Telegin A.M. , Piyakov A. V. and others. ... Semkin N.D. , Telegin A.M. , Voronov K.E. Registering the Elemental Composition of Micrometeoroids and Debris // Protection of Materials and Structures From the Space Environment. 2013. ... Semkin N.D. , Telegin A.M. , Voronov K.E. and others. ... Voronov K.E. , Semkin N.D. , Telegin A.M. and others. ...

. Institute Structure . • Administration . • Research Divisions: . Superhigh energy particles . Space plasma physics . Aeronomy . • Center of information technology . • Stations: . Yakutsk Extensive Air Shower (EAS) Array . Polar Geocosmophysical Observatory (PGO) . Complex Geophysical Station (CGS) . Optical Station . Yakutsk Cosmic Ray Spectrograph . Magnetic Observatory . Ionospheric Station . Station for Receiving of Satellite Information .

... 8, `` Celestial Mechanics'', 2002 Two trends in the development of numerical algorithms of celestial mechanics T. V. Bordovitsyna, V. A. Avdushev, A. M. Chernitsov Research Institute of Applied Mathematics and Mechanics, Tomsk, Russia The motion of a material particle with the mass m in the gravitational field of the central body with the mass M under the action of conservative forces F i with the potential function V i and non--conservative forces P in a ...

Supernova Cosmology: Legacy and Future, (preprint) . Goobar, A. and Leibundgut, B. Annual Reviews of Nuclear and Particle Science , 2011, 61, 251 . Cosmological Implications from observations of Type Ia Supernovae, . ... Type Ia Supernovae, . ... Leibundgut, B., Suntzeff, N. B. in "Supernovae and Gamma-Ray Bursts", 2003, . ... Cosmology with Supernovae, . ... Leibundgut, B. in Frontiers of Cosmology, 2005, . ... Twenty Years of SN 1987A . ... ApJS, accepted . ... ApJ, 782, 28 . ...

... The analysis shows, that asteroid ­ rubble pile loses its fast fragments in no time but the retaining fragments forms a compact structure immersed in dust ­ gas atmosphere, created by interaction of interplanetary medium with dispersed product of collisional evolution of asteroid. By interaction of an asteroid ­ rubble pile with interplanetary medium structures asteroid can increase its brightness on account of blowed up dust simulating phenomenon of distant comet's brightening. ...

... February 6, 1996 . COBE Hotspots: The Oldest Structures Known . Credit: NASA , COBE , DMR , Four Year Sky Map . ... These spots are the oldest structures known - probably the oldest structures humanity will ever know. ... By studying the size and distribution of the spots found with COBE and future missions , astronomers hope to learn what matter and processes caused the spots to form - and hence determine the composition , density , and future of our universe. ... About APOD | ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... Ciel Espace, nouvelle formule, c'est . des actualit†йs . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Le trou noir de la Voie lact†йe †а la di†иte . ... Des scientifiques am†йricains ont compris pourquoi le trou noir central de la Voie lact†йe, Sagittarius A*, est beaucoup moins actif que ses cong†йn†иres. ...

. The XMM-Newton website has moved to the following location: . http://www.cosmos.esa.int/web/xmm-newton

... Jupiter's icy moon Europa has a metallic core and layered internal structure similar to the Earth's , while the heavily cratered moon Callisto is a mixture of metallic rock and ice with no identifiable central core, according to new results from NASA's Galileo mission . In addition, recent plasma wave observations from Galileo show no evidence of a magnetic field or magnetosphere around Callisto, but do hint at the prospect of a tenuous atmosphere. ... Jupiter Galileo . ...

... 108.1163Kellermann+ J/AJ/108/1163 Radio structure of Quasars (Kellermann+ 1994) ================================================================================ The radio structure of radio loud and radio quiet quasars in the Palomar bright quasar survey. ... The observed structure of some well resolved radio quiet quasars and AGN's show large scale linear structures or unresolved central cores similar to radio loud objects in the BQS sample as well as the more luminous radio selected quasars. ...

... Departments . ... The Laboratory of Astrometry . Dept. for Physics of Stars&Galaxies . Dept. for Space Plasma Physics . ... Dept. for Solar Physics . ... Ukrainian GNSS Network . ... The Department for Astrometry and Space Geodynamics . ... Space Geodynamics Department was created in 1979 at the Laboratory for the Study of the Earth's rotation Division fundamental astrometry. ... By 2016 the department had the laboratory "Ukrainian Centre of determination of the Earth Orientation Parametersб». ...