'Power spectra' diaporamas de présentation

Weak Lensing Tomography

Weak Lensing Tomography. Sarah Bridle University College London Catania Autumn Lensing School Nov 2006. versus. 3d vs 2d (tomography) Non-Gaussian -> higher order statistics Low redshift -> dark energy. Weak Lensing Tomography. In principle (perfect zs) Hu 1999 astro-ph/9904153

2.37k views • 214 slides

Dennis Baldocchi University of California, Berkeley Brazil Flux Eddy Covariance Meeting

Micrometeorological Methods Used to Measure Greenhouse Gas Fluxes. Dennis Baldocchi University of California, Berkeley Brazil Flux Eddy Covariance Meeting Santa Maria Rio Grande do Sul , Brazil November, 2011. Challenges in Measuring Greenhouse Gas Fluxes.

914 views • 67 slides

SYSTEMATIC ERRORS IN GPS POSITION ESTIMATES

730 views • 51 slides

Kathy Whaler University of Edinburgh, UK GEST Visiting Fellow

Martian and terrestrial Satellite Magnetic Data: Crustal magnetization and downward continuation models. Kathy Whaler University of Edinburgh, UK GEST Visiting Fellow. Plan. Satellite data available Methodology Downward continuation Link to aeromagnetic data Magnetization Mars

506 views • 40 slides

Fluctuations, Response, and Prediction in Geophysical Fluid Dynamics

419 views • 34 slides

The Dark Universe: Cosmology

The Dark Universe: Cosmology . Andrew Jaffe Imperial College IOP HEPP/APP 2010 March 30 2010. The Dark Universe: Cosmology in 2010 and beyond. A Standard Cosmological Model & its Parameters? Inflation, Dark Energy Measurements at low and medium redshift: galaxies

474 views • 33 slides

Phase Analysis of Hand Movement-Related EEG Activity

Phase Analysis of Hand Movement-Related EEG Activity. Xuan Hung Ta, Sun Young Cho, Jung Ae Kim, and Seung Kee Han*. Department of physics, Chungbuk National University. 7 sec. 5 sec. 3 sec. Control. Button Press. t (ms). Self-Paced Hand Movement. 164 trials for left-hand movement

533 views • 20 slides

360 views • 19 slides

Large Scale Simulations of Reionization

Large Scale Simulations of Reionization. Garrelt Mellema Stockholm Observatory . Collaborators: Ilian Iliev, Paul Shapiro, Marcelo Alvarez, Ue-Li Pen, Hugh Merz, LOFAR EoR Key Project team. Contents. Reionization Simulations Some results WMAP1 versus WMAP3 Secondary CMB Anisotropies

281 views • 18 slides

Density fingering of reaction-diffusion fronts in porous media

378 views • 16 slides

Systematic effects in cosmic microwave background polarization and power spectrum estimation

Systematic effects in cosmic microwave background polarization and power spectrum estimation. Fidy A. RAMAMONJISOA. University of KwaZulu-Natal. School of Mathematical Science. PhD project. supervised by. Prof Subharthi Ray.

299 views • 16 slides

317 views • 15 slides

What Shapes the Structure of MCs: Turbulence of Gravity?

What Shapes the Structure of MCs: Turbulence of Gravity?. Alexei Krtisuk Laboratory for Computational Astrophysics University of California, San Diego. Collaborators : David Collins (LANL, Los Alamos) Mike Norman (SDSC, La Jolla)

270 views • 14 slides

LECTURE 09: THE TRIGONOMETRIC FOURIER SERIES

LECTURE 09: THE TRIGONOMETRIC FOURIER SERIES. Objectives: The Trigonometric Fourier Series Pulse Train Example Symmetry (Even and Odd Functions) Line Spectra Power Spectra More Properties More Examples

317 views • 12 slides

How to make a power spectra

How to make a power spectra. And discover something we don't understand well!. You will use a function I wrote, powerest.m, because it is easier to use and better documented than those in Matlab. function [pspecest,freqest,EDF,VAR]=powerest(tseries,taxis,nlength);

181 views • 11 slides

A Sample IHY 2007 Instrumentation Proposal

A Sample IHY 2007 Instrumentation Proposal. J. Kasper, B. Thompson, N. Fox. Overview. New technology: cheap radio receivers and computers to conduct low-frequency radio observations Option (1) low-frequency monitoring of solar radio bursts with single dipoles

243 views • 10 slides

Understanding the Tensor CMB Polarisation Power Spectrum

Understanding the Tensor CMB Polarisation Power Spectrum . Jonathan Pritchard with Marc Kamionkowski Caltech. Overview. Have been attempting to develop analytic expressions for the tensor CMB power spectrum.

176 views • 9 slides

Fourier Transform: Synthesis

Fourier Transform: Synthesis. Fourier Transform. Y = fft(y,512); Pyy = Y.* conj(Y) / 512; f = 1000*(0:256)/512; plot(f,Pyy(1:257)) title('Frequency content of y') xlabel('frequency (Hz)'). t = 0:0.001:0.6; x = sin(2*pi*50*t)+sin(2*pi*120*t); y = x + 2*randn(size(t));

459 views • 8 slides

ACE MFI data, 500 sec on 1 Oct 2007

ACE MFI data, 500 sec on 1 Oct 2007. Randomly phased fluctuations perpendicular to a mean field. Perpendicular fluctuations with phases chosen to minimize | B | fluctuations. Power spectra of components and | B |, randomly phased (_._) and optimized (solid).

153 views • 5 slides

Istituto Nazionale di Geofisica e Vulcanologia

Istituto Nazionale di Geofisica e Vulcanologia.

165 views • 1 slides