Next: Supernova Explosions Up: No Title Previous: X-ray Luminosity Evolution . The origin of cosmic rays (CR) (especially of very high energies, >  eV) until now has been one of the unsolved problems in modern astrophysics. It is unclear as yet whether one universal mechanism of relativistic particle formation in our Galaxy operates or not, and if there are several different mechanisms, what is their relative contribution to CR formation. ... compact X-ray stars in binary systems. ...

... She is working with Claus Leitherer on different properties of the star formation process in local irregular galaxies. ... Her main research interests involve: the role of evolution in galaxy properties; the environmental effects in galaxy evolution/formation; the properties of star-forming galaxies at low and high redshifts; the starburst/AGN connection. ... She is working with Daniela Calzetti, Claus Leitherer, and Tim Heckman on the structure and evolution of starburst galaxies. ...

Next: EVOLUTION MODELS Up: EXTREME HELIUM STARS: PULSATION Previous: EXTREME HELIUM STARS . The characteristic surface properties, effective temperature , surface gravity and composition , of EHes have been summarized by Jeffery (1996). ... Helium: ( ) By definition, helium dominates the atmospheric abundances. ... This is supported by a correlation between N and Fe abundances in EHes. ... Next: EVOLUTION MODELS Up: EXTREME HELIUM STARS: PULSATION Previous: EXTREME HELIUM STARS Simon Jeffery . ...

... Astronomical Definition: self-replicating information . ... Climate Changes . Milloins of years timescale . ... Mass Extinctions in Geological History: . 500 million years ago (unclear) . ... Evidence from Fossil Record: 100-150 million year extinction periodicity ?? ... Climate Cycle ? ... Since the orbital period of the Sun around the center of the Galaxy is about 250 million years then every 100-150 million years the earth is in a spiral arm which is a region of high supernova density. ...

... at the ISSP RAS. ... MSU student Kostretsova N.B. successfully defended her thesis entitled "Investigation of Thermal and Chemial Expansivity of Ceria-Based Solid Solutions". ... V.A. Kolotygin successfully defended his PhD thesis "Perovskite-Like Oxide and Composite Anode Materials for Solid Oxide Fuel Cells: Functional Properties and Electrochemical Behavior in Contact with Gallate- and Silicate-Based Solid Electrolytes" and was awarded PhD degree in the area of Materials Science and Engineering ....

... We suggest simple method of the selection of distant galaxies based on their radio properties. ... RC0015+0503a , RC0015+0503b , RC0015+0501 , RC0034+0513 , RC0038+0449 , RC0042+0504 . ... RC0105+0501 , RC0110+0500 , RC0117+0503 , RC0126+0502 , RC0133+0459 , RC0135+0450 , RC0137+0539 , RC0143+0505 , RC0152+0453 , RC0154+0459 , RC0159+0448 . ... RC0209+0501b , RC0213+0516 , RC0226+0512 , RC0250+0512 . ... RC0302+0456 , RC0308+0454 , RC0311+0507 , RC0318+0456 , RC0355+0449 . ...

... Astrophysics Group . ... Galaxy Formation and Evolution . ... Gas heating and outflows driven by accreting supermassive black holes (quasar phase) may affect the evolution of star formation in their host galaxy. ... The starburst galaxy M82, which expels dust and metal enriched gas out of its disk . ... The interstellar medium (ISM) plays a central role in galaxy evolution, providing the fuel for star formation and also hosting the ?fossil record? of the galaxy formation history. ...

Links given for particles of different shapes allows one to access our graphics illustrating the dependence of various optical properties of model scatterers on their parameters. ... Q ext , Q sca , Q abs , Q bk , albedo, g, Q pr vs x for different m . F ij vs theta for different x, m . ... Q ext , Q sca , Q abs , Q bk , albedo, g, F ij vs x for different m, alpha . F ij vs theta for different x, m, alpha . ... Q ext , Q sca , Q abs , Q bk , albedo, g, Q pr vs x for different m (TE/TM modes) . ...

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... This implies powerful stability and collimation taking into account that different instabilities can affect the evolution of jets. ... Thus, jet stability has been a significant research subject during the last decades. In this talk, I will present some recent results on the linear and non-linear stability analysis of non-relativistic magnetized jets carrying helical magnetic fields. ... I will discuss the non-linear evolution of jets with the aid of three-dimensional numerical simulations. ...

... Home . ... Main . ... The pulsar group is part of the Australia Telescope National Facility , a division of the CSIRO . The ATNF operates the Parkes radio telescope where the majority of our observations are carried out. ... The ATNF Pulsar Educational Page gives a broad overview of pulsar properties, observations and current research projects. ... Our group developed the web-based ATNF Pulsar Catalogue , which provides comprehensive information on all published pulsars. ... Pulsar Catalogue . ...

E. V. Miletsky, V. G. Ivanov, Y. A. Nagovitsyn, Some properties of latitude-time evolution of local and background solar magnetic fields // Advances in Space Research, 2015, vol. 55, Issue 3, pp. ... PDF] . E. V.Miletsky, V. G.Ivanov, Amplitude-Time Relations at Different Latitudes in the 11-Year Cycle of Solar Activity // Geomagnetism and Aeronomy, 2015, vol. ... V. G. Ivanov, E. V. Miletsky, Width of Sunspot Generating Zone and Reconstruction of Butterfly Diagram // Solar Physics, 2011. vol. ...

... 7.1 Introduction to media types . ... 7.3 Recognized media types . 7.3.1 Media groups One of the most important features of style sheets is that they specify how a document is to be presented on different media: on the screen, on paper, with a speech synthesizer, with a braille device, etc. Certain CSS properties are only designed for certain media (e.g., the 'cue-before' property for aural user agents). ... For example, the 'font-size' property is useful both for screen and print media. ...

... January 16, 1998 . Dusting Spiral Galaxies . Credit: W. Keel and R. White ( U. Alabama ), NASA . Explanation: How much dust is in spiral galaxies? ... This striking, detailed Hubble Space Telescope image of dust in the outer reaches of a foreground spiral galaxy (left) back lit by an elliptical galaxy offers an elegant approach to providing the answers . As expected, dust lanes in the foreground galaxy seem to be associated with spiral arms. ... About APOD > . ... NASA Technical Rep.: ...

... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: The dawn of planets: structure and evolution of protoplanetary disks with ALMA . ... ALMA . ... Observing with ESO Telescopes . ... At ESO we have primary responsibility for the determination of the stellar and star-disk interaction properties using VLT/XShooter spectroscopy and for the study of the dust properties in protoplanetary disks from observations at submm and radio wavelengths with ALMA and the VLA. ...

... The sky distribution of the BCGs from the HSS sample is shown in Fig. 6 together with BCGs from the SBS and Case surveys (Izotov et al. [ 1993b ]; Pustilnik et al. ... First, we compare the apparent magnitude distributions of the three samples. ... The similar behaviour of the faint end of the apparent magnitude distributions infers that the Northern BCG sample may have a similar completeness down to this limiting magnitude. ...

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 S un Stellar Evolution of Low and High Mass Stars Deaths of Stars Exotic Stars Class 4 Galaxies Galaxy Classification Formation of Galaxies Galactic ... Low mass stars live and die differently than high mass stars. ...

... VLA observations and Tully-Fisher distances of gas-poor spiral galaxies in the Virgo Cluster Region . ... The HI-H2 Pressure Relation In Early-Type Galaxies . ... Tracing evolution of early-type spirals through the neutral hydrogen window . ... An Arecibo HI 21-cm Absorption Survey of Rich Abell Clusters . ... The Arecibo Ultra-Deep Survey . ... Absorption in varying galactic environments seen in HI surveys . ... Early-type galaxies with neutral hydrogen in the Virgo cluster from the ALFALFA survey ...

Bizyaev D., "The Argument Against Long Extragagalactic Distance Scale", Astron. ... Soviet Astronomy) 1997. ... Zasov A., Bizyaev D., "An Estimate of the Hubble Constant using a Criterion for Gravitational Stability of Gaseous Discs", Pis'ma v Astron. ... 1996. ... D.Bizyaev, "Types of galaxies", 1996, Zvezdochet, No 11, p.22 (in Russian) . D.Bizyaev, "The Hubble Constant", 1996, Zvezdochet, No 2, p.20 (in Russian) . D.Bizyaev, "Magellanic Clouds", 1995, Zvezdochet, No 6, p.12. (in Russian) . ...

... at the IITP. 1993-1995: researcher at Moscow International Mathematical Institut. a) Mathematics: Theory of Probability, Random Processes , Mathematical Physics, Theory of Interacted Particle Systems. b) Queueing Theory: Queueing Networks , application of the Theory of Markov Processes with Local Interactions to Networks with a large number of queues, Asymptotical Properties of Queueing ... A.N.Rybko, "Stationary Distributions of Markov Processes Modelling Queueing Networks". ...