Weak Lensing: Cosmic Shear Background sources Dark matter halos
Observer
Statistical measure of shear pattern, ~1% distortion Radial distances depend on geometry of Universe Foreground mass distribution depends on growth of structure
Neutral at z=1000
Ionized at z<6 COBE
space weak lensing shear
ground
Space: small and stable PSF ! larger number of resolved galaxies ! reduced systematics
Typical cosmic shear is ~ 1%, and must be measured with high accuracy
Complete orthogonal basis functions Capture all shape information of an object Simple and analytic form for convolution and shear Adapted to cosmic shear
Apologies to the Black belt radio astronomers in the room if this is too simple
• Simulate a grid of points •
• •
with DFT’s -> fill MS Simulate the same points with the UVBrick -> subtract the UV values from MS. Image difference. sigma:3.02036e-05
• 1200x1200 at 120'
• Simulate a grid of points •
• •
with DFT’s -> fill MS Simulate the same points 0.5 pix offset with the UVBrick -> subtract the UV values from MS. Image difference. sigma:0.000555845
• 1200x1200 at 120'
Size of support convolution is important, if smaller than 4 we get ghosts
s-cubed.physics.ox.ac.uk
Design requirements of the SemiEmpirical eXtragalactic (SEX) simulation:
Oct 7, 2009 - Empirical. eXtragalactic (SEX) simulation: s-c ube d.physic. s.o. x.a c.uk. Size of support convolution is important, if smaller than 4 we get ghosts ...
SixpackImageComponent (Python). FFTBrick ... interpolated visibilities as a function of frequency and time. ... enables one to calculate V(u,v,w) from V(u,v,w=0).
Using this customized version, which we call the Simulation. Manager (SM) ..... International Conference for High Performance Computing, Networking,. Storage ...
Mar 25, 2014 - If αz = 1 or 0, we call pixel z definite foreground or definite background, ..... In Proceedings of the 2013 IEEE Conference on Computer Vi-.
5.4.10 ShootingRecord heap ... the JFIF file format[1], as described below), sample software shall be provided openly to player vendors. ... In the separate "Decisions Concerning Extension" section, we define how various companies.
Deep Autoencoder neural network trains on a large set of images to figure out similarities .... 2.1.3 Representing and generalizing nonlinear structure in data .
Mar 25, 2014 - ... full and partial pixel coverage (alpha-channel) ... Choose best pair among all possible pairs ... confidence have higher smoothing weights) ...
Tampere University of Technology, Institute of Physics, Optics Laboratory, ... sub-5 cm lengths of commercially-available highly nonlinear fibre are ... A similar setup was also used in our previous experiments that were carried out in the .... nonli
onset date as the single most desirable piece of forecast information [Luseno et al., ... has focused on establishing predictive relationships be- tween seasonal ...
Dec 15, 2005 - face unit to the retrieval processing unit, image data stored in the image information storing unit is retrieved in the retrieval processing unit, and ...
the solar cycle varies smoothly with latitude, rainfall cycles can often respond ... associated with basin-wide heating of the Indian Ocean. Studies disagree on the ...
ABSTRACT. We simulate the early stages of the evolution of turbulent, virialized, high-mass protostellar cores, with primary attention to how cores fragment and whether they form a small or large number of protostars. Our simulations use the Orion ad
F.39) as implemented on the âHigh Performance Computerâ (Hessische Hochstleistungs ... The semiempirical quantum mechanical calculations were performed.
terms of your âdomain languageâ: I have an interferometer array of antennas make me a point source here make me the nodes to compute visibilities at each.
Feb 1, 2002 - The solution of these equations yields the trajectories. ¢ p1. ¢t§ гждждедег ... Table 1: Schematic structure of an MD program ..... V specific heat.
into account a particular query-image without interaction between system and .... groups are: City, Clouds, Coastal landscapes, Contemporary buildings, Fields,.