'Acoustic oscillations' presentation slideshows

International Year of Astronomy 2009 (IYA)

International Year of Astronomy 2009 (IYA). World-wide celebration of astronomy, its contribution to society and culture 400 th anniversary of first use of astronomical telescope by Galileo. NASA IYA objectives include: strengthen interest in science and science education

798 views • 62 slides

CMB: Sound Waves in the Early Universe

Before recombination: Universe is ionized. Photons provide enormous pressure and restoring force. Photon-baryon perturbations oscillate as acoustic waves. After recombination: Universe is neutral. Photons can travel freely past the baryons.

829 views • 57 slides

T he dark universe

668 views • 55 slides

Dark Energy and Cosmic Sound

Dark Energy and Cosmic Sound. Daniel Eisenstein (University of Arizona) Michael Blanton, David Hogg, Bob Nichol, Nikhil Padmanabhan, Will Percival, David Schlegel, Roman Scoccimarro, Ryan Scranton, Hee-Jong Seo, Ed Sirko, David Spergel, Max Tegmark, Martin White, Idit Zehavi, and the SDSS.

231 views • 14 slides

Future observational prospects for dark energy

216 views • 10 slides

Niels Bohr Summer Institute 27/8-07

189 views • 9 slides