'Gravitational instability' diaporamas de présentation

Sting Jets in severe Northern European Windstorms

Sting Jets in severe Northern European Windstorms. Suzanne Gray, Oscar Martinez-Alvarado, Laura Baker (Univ. of Reading), Peter Clark (collaborator, Met Office). June 2009. Outline. Review Severe Northern European windstorms. Currently identified sting jet cases Climatological importance

568 views • 42 slides

Dark Matter and the Large Scale Structure of the Universe ????????

Dark Matter and the Large Scale Structure of the Universe ????????. Lam Hui ?? Columbia University. This is the second in a series of 3 talks. July 5: Dark energy and the homogeneous universe Today: Dark matter and the large scale

535 views • 38 slides

Gravitationally Unstable Accretion Disks

Gravitationally Unstable Accretion Disks. Roman Rafikov (Princeton). Gravitational Instability. Outline. Evidence for the gravitationally unstable disks Gravitoturbulence vs fragmentation Properties of gravitoturbulent disks Constraints on fragmentation Applications

459 views • 28 slides

Variability of radio-quiet AGN across the spectrum: facts and ideas

B. Czerny Copernicus Astronomical Center, Warsaw, Poland. Variability of radio-quiet AGN across the spectrum: facts and ideas. Outline. Flow geometry Basic timescales in alpha disks Basic instabilities in alpha disks Nature of viscosity, instabilities in MHD simulations

379 views • 26 slides

Star Formation in Galaxies

Star Formation in Galaxies. Yuexing Li (Columbia Univ. /AMNH) Mordecai Mac low (AMNH/Columbia) Ralf Klessen (AIP, Germany) John Dubinski (CITA) Zoltan Haiman (Columbia). NASA, Hubble Heritage Team, Nick Scoville and T. Rector. NASA/STScI/B.Whitmore. Star Forming Galaxies.

416 views • 20 slides

Gravitational Instability

Gravitational Instability. Can Giant Planet Form by Direct Gravitational Instability?. Roman Rafikov (CITA). Gravitational Instability. Dispersion relation for density waves in disk. Get and instability when. Toomre Q parameter.

231 views • 19 slides

Cosmological Structure Formation A Short Course

322 views • 18 slides

Can Photo-Evaporation Trigger Planetesimal Formation?

Can Photo-Evaporation Trigger Planetesimal Formation?. Henry Throop John Bally SWRI Univ.Colorado / CASA DPS 12-Oct-2004. Orion Nebula. Photo-evaporation (PE) by external O/B stars removes disks on 10 5 -10 6 yr timescales.

208 views • 11 slides

Eduard Vorobyov and Shantanu Basu

Envelope-Induced Gravitational Instability and the Ultimate Fate of Protoplanetary Embryos. Eduard Vorobyov and Shantanu Basu. Department of Physics and Astronomy University of Western Ontario London, Canada.

115 views • 11 slides