Patrick Simon Argelander-Institute for Astronomy, Bonn, Germany
Patrick Simon Argelander-Institute for Astronomy, Bonn, Germany
Patrick Simon Argelander-Institute for Astronomy, Bonn, Germany
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Weak lensing on a grid<br />
Lensing convergence = projected matter fluctuations<br />
∫ ∞<br />
κ(θ) = 3H2 0 Ω m<br />
2c 2 dw W (w)f k(w)<br />
0 a(w)<br />
〈 〉<br />
fk (w s − w l )<br />
W (w l )=<br />
f k (w s )<br />
w s<br />
δ m (f k (w)θ, w)<br />
Chop 3-D volume into slices of constant matter density<br />
κ(θ) ≈<br />
N lp<br />
∑<br />
i=1<br />
Q i δ (i)<br />
m (θ) ,Q i = 3H2 0 Ω m<br />
2c 2<br />
∫ wi+1<br />
w i<br />
dw W (w)f k(w)<br />
a(w)
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