... Fundamental core Alfven mode ~20Hz Fundamental crust shear mode ~10 ­ 40 Hz Strong coupling leads to non-trivial dynamics. ... Initial crustal displacements decay in <second What happens then? crust · Global modes are strongly damped when inside Alfven continuum (L.06,07, Gruzinov 08) · cf. ... Crustal modes Alfven continuum (edge and gap modes) Tangling: effective shear modulus, discrete modes' grid Mass loading in the core (superfluidity, proton fraction) Transient QPOs Successes: 1. ...

Consequences of Impacts of Cosmic Objects in Circumstances of Changing Climate . ... The consequences of the impacts of asteroids about 1 km in size on the Earth are considered from the viewpoint of their negative effects under conditions when the climate changes. These effects are ejection of greenhouse gases, fires, changes in surface albedo, and global dispersion of asteroid material. ...

... November 6, 1997 . The Magnetic Carpet Of The Sun . Credit: SOHO Consortium , ESA , NASA . Explanation: The Sun has a magnetic carpet . Its visible surface appears to be carpeted with tens of thousands of magnetic north and south poles joined by looping field lines which extend outward into the Solar Corona . ... A close-up of the Solar surface is illustrated in the inset. ... About APOD > . ... NASA Technical Rep.: ... A service of: LHEA at NASA / GSFC . ...

... Glagolevsky Yu.V., Kozlova K.I., Lebedev V.S. , Polosukhina N.S., . ... Lebedev V.S. Spot analysis of rigidly rotating Ap-stars . IzvSAO, 8:20(1976). Glagolevsky Yu.V., Kozlova K.I., Kumajgorodskaya R.N., Lebedev V.S. , Polosukhina N.S., Chunakova N.M. The results of spectrophotometric studies of magnetic and peculiar stars: 21 Per, Beta CBr, Gamma Boo and Gamma UMi . ... Lebedev V.S. , Lebedeva I.A. Simulation of photographic measurement process of stellar magnetic fields . ...

... Because of the low conductivity, the magnetic coupling is weak and depends critically on density, temperature, ionisation rate and charged species. ... Implications When the Hall regime dominates near the midplane and ambipolar diffusion is dominant closer to the surface, a thicker layer of the disc is unstable to MRI perturbations and modes grow faster than under the ambipolar diffusion approximation. ... Right panel: For weak coupling, Hall limit perturbations grow until vA/cs ~ 2.9. ...

Computational modelling of stellar magnetic fields from observational b oundary values M. S. Wheatland Scho ol of Physics Sydney Institute for Astronomy The University of Sydney Cosmic Magnetism Kiama 8 June 2010 Model for solar AR 10953 from Hinode/SOT data Overview Background Zeeman effect on spectral lines The Sun Modelling active regions The data ­ vector magnetograms Nonlinear force-free ... 1987) 1 For more details see e.g. Landi degl'Innocenti & Landolfi (2004). ...

... Bad Astronomy . ... Bitesize Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Right now as I write this, the planet Venus shines brightly in the evening sky, getting higher with each passing day. ... Actually, when astronomers were first able to start measuring properties of Venus, it did look very much like a twin of Earth. ... 2008 Phil Plait. ... Subscribe to the Bad Astronomy Newsletter! Talk about Bad Astronomy on the BA Bulletin Board! ...

... BOT OF M2 CONE TOP OF M3 CONE M3 INT. BAF1 M3 INT. BAF2 M3 INT. BAF3 M3 INT. BAF4 M3 INT. BAF5 : Angle in degrees Y-Value Weight 0.000000 0.500000 0.050000 1.000000 0.075000 2.000000 0.090000 0.500000 0.099500 0.500000 VCX 0.000000 0.000000 0.000000 0.000000 0.000000 VCY 0.000000 0.000000 0.000000 0.000000 0.000000 VAN 0.000000 0.000000 0.000000 0.000000 ...

... The greenhouse effect . ... The Earth receives short-wave radiation from the sun, one-third of which is reflected back out to space. The remaining radiation is absorbed by the surface and heats up the planet. Then the Earth emits infra-red radiation because of the greenhouse gases contained in the atmosphere. ... Problems arise when greenhouse gases such as carbon dioxide and methane increase due to human activities and the Earth gets hotter. ...

... Changing a World . ... I was watching a PBS program about John Glenn's 1998 launch on the Space Shuttle when the idea first occurred to me. ... As the program went on to talk about space initiatives and what comes next for NASA, covering topics such as the International Space Station and Mars colonization, I began to realize how common-place some of this must be to my students, nearly all of whom have grown up in the post-Apollo era. ... All of this meant that I knew why I was interested in science....

... Telescopes ћ Binoculars ћ Microscopes . Meade Ultra-High Transmission coatings (UHTC ) Group . ... Meade Standard Coatings: The optical surfaces of all Meade telescopes include high-grade optical coatings fully consistent in quality with the precision of the optical surfaces themselves. ... These specialized, and extremely advantageous, coatings are offered here as the Meade Ultra-High Transmission Coatings (UHTC) group, a coatings group available optionally on many Meade telescope models. ...

... 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Nuclear activity and environment Effect of environment on AGN is not completely clear yet. ... 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Effect of the mass Mass slices ­ optical and radio AGN overall interaction one-on-one interaction relative location 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Stratified study Stratifed study that considers several strata of mass. ...

Progress in science is inversely proportional to the number of journals" . ... PHYSICS JOURNALS . SPIRES-HEP Database Covers more than 415,000 high-energy physics related articles, including journal papers, preprints, e-prints, technical reports, conference papers and theses, received by the SLAC and/or DESY Libraries since 1974. ... Journal of Physics G: Nuclear and Particle Physics . ... Journal of Geometry and Physics (Special Issues) . ... Journal of Nuclear Materials (Special Issues) . ...

... Tonight's Sky . ... Sky this Month . ... solar system . ... Sky this Week . ... Deflector shields" protect the lunar surface . ... It has long been thought that the swirls were a result of magnetic shielding of the lunar surface from the solar wind, but nobody understood how the relatively weak magnetic fields associated with lunar swirls could sufficiently protect the Moon's surface over hundreds of millions of years to prevent surface darkening and produce such finely detailed patterns. ...

... Friday, May, 18, 5 p.m., room 206. ... Friday, April, 27, 5.30 p.m. JOINT MEETING WITH THE SEMINAR OF M.TSFASMAN . V.M.Buchstaber will speak on the so called "(n,s) -- models of Riemann surfaces". ... Friday, April, 13, 5 p.m., room 206. ... Topological classification of Z^m_p actions on surfaces . ... Dessins d'enfants and Riemann surfaces . ... Friday, March, 30, 5 p.m., room 206. ... On Friday, February, 23, 5 p.m., room 206, S.Loktev will go on with his talk "Conformal blocks of the CFT". ...

... In electron-positron colliders, effect of the lattice modification by opposing bunch focusing on the equilibrium radiation emittance is important at high values of the space charge parameter, so one should correctly evaluate this dynamic radiation emittance of the weak beam, which may differ a lot from the nominal emittance, already in the linear beam-beam force model. ... The linearized beam-beam force is equivalent to focusing insertion in linear lattice of the collider. ...

ПУБЛИКАЦИИ - 2012 год . ... Modeling MHD Shock Wave Propagation Along the Solar Surface, Using Nonlinear Geometrical Acoustics // Energy Storage and Release through the Solar Activity Cycle / Ed. by Christophe M., Nindos A. Berlin: Springer, 2012. ... I. Reconciliation of "EIT Waves", Type II Radio Bursts, and Leading Edges of CMEs // Energy Storage and Release through the Solar Activity Cycle / Ed. by Christophe M., Nindos A. Berlin: Springer, 2012. ... Berlin: Springer, 2012. ... J. 2012. ...

The Star called the Sun. The Sun as the star . ... The visible star value . ... Spectrum class . ... 149 597 870 km . ... The Solar energy sourse is the core transformation of the Sun, where temperature is 15 000 000 K. The energy from inside is carried by irradiation and then in the external layer with 0,2 Ra of thikness - by convection. ... The Earth, situating far from the Sun (149 mil km), receives about 2.1017 W of the Solar beam energy (see item "The Solar constant" ). ...

... Archive of publications: . ... 2012 . 2011 . 2009 . 2008 . 2007 . 2006 . 2005 . 2004 . 2003 . ... From 2015 2014 2013 2012 2011 2009 2008 2007 2006 2005 2004 2003 to 2015 2014 2013 2012 2011 2009 2008 2007 2006 2005 2004 2003 . ... 621-628, 2003 . ...

... Remote Sensing of Fire Intensity and Burn Severity in Forests of Central Siberia . ... Increasingly sophisticated and comprehensive estimates of burned areas and of active fire areas are being produced using satellite imagery. However, accurate regional estimates of fire intensity, ecosystem fire effects, and fire emissions to the atmosphere require development of accurate remote-sensing based methods for estimating the intensity of active fires and the severity of fire impacts. ...