The case for a sterile neutrino as warm dark matter Hey! Λ CDM do you have a small scale problem? WDM: Sterile neutrinos come to the rescue!! Any sightings of (El) ν s…

Slide 1Backreaction as an explanation for Dark Energy ? with some remarks on cosmological perturbation theory James M. Bardeen University of Washington The Very Early Universe…

Establishing homogeneity of the universe in the shadow of dark energy Chris Clarkson Astrophysics, Cosmology & Gravity Centre, and, Department of Mathematics and Applied…

Slide 1 Detection of Spread-F and foF2 values using Digisonde and VIPIR instruments Preeti Bhaneja Terry Bullett November 8, 2011 Slide 2 Index 2 Introduction Data Analysis…

Slide 1 Slide 2 LONGITUDINAL DIFFERENCES IN THE EQUATORIAL SPREAD F CHARACTERISTICS BETWEEN VIETNAM AND BRAZIL Hoang Thai Lan, Abdu M. A, MacDougall J. W, Batista I. S. 1.…

Slide 1 Hydrogen 21cm Cosmology Tzu-Ching Chang (ASIAA) Ue-Li Pen, Kiyo Masui (CITA) Jeff Peterson, Kevin Bandura, Tabitha Voytek, Aravind Natarajan (CMU) Pat McDonald (LBNL)…

Slide 1What do we know about extrasolar planets? Neill Reid STScI Slide 2 The big questions Over 145 extrasolar planets in more than 125 stellar systems have been discovered…

Slide 1 Observed Features of the Universe Universe is homogeneous and isotropic on lengths > 100 Mpc Universe expanding uniformly ordinary matter is more abundant than…

Slide 1 Naturalness in Inflation Katherine Freese Michigan Center for Theoretical Physics University of Michigan Ann Arbor, MI Slide 2 Outline Brief review of inflation Naturalness…

Slide 1 Cosmological Structure Formation A Short Course II. The Growth of Cosmic Structure Chris Power Slide 2 Recap The Cold Dark Matter model is the standard paradigm for…