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glenco / SLsimLib

Library for Gravitational Lensing Simulations
MIT License
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Double check sign of deflection from mass maps #76

Closed rbmetcalf closed 9 years ago

rbmetcalf commented 9 years ago

Turning the Born appoximation on and off creates interesting effects, but I am not sure the results are going the way I would expect.

cgiocoli commented 9 years ago

to me it seems corrects here https://dl.dropboxusercontent.com/u/5576511/BornApp.mov you can see a movie where frame 1 has no Born Approximation and frame 2 has it. You can actually see the structure position change.

in attachment you have a plot for a light-cone realisation for the two vipers field of the power spectrum with and without Born App.

Carlo Giocoli LAM - Laboratoire d’Astrophysique de Marseille Pôle de l’Étoile Site de Château-Gombert 38, rue Frédéric Joliot-Curie 13388 Marseille cedex 13 FRANCE email: cgiocoli@gmail.com skpe: cgiocoli tel: +33 (0) 4 95 04 41 20 web: http://cgiocoli.wordpress.com

On 28 Sep 2015, at 16:22, Ben Metcalf notifications@github.com wrote:

Turning the Born appoximation on and off creates interesting effects, but I am not sure the results are going the way I would expect.

— Reply to this email directly or view it on GitHub.

rbmetcalf commented 9 years ago

Yes, I've looked at this. Did you output the deflection maps? Could you do that for one field?

cgiocoli commented 9 years ago

No I did not now I cannot because I have other job running and I don’t want to stop. I could do it in the next days

Carlo Giocoli LAM - Laboratoire d’Astrophysique de Marseille Pôle de l’Étoile Site de Château-Gombert 38, rue Frédéric Joliot-Curie 13388 Marseille cedex 13 FRANCE email: cgiocoli@gmail.com skpe: cgiocoli tel: +33 (0) 4 95 04 41 20 web: http://cgiocoli.wordpress.com

On 28 Sep 2015, at 16:42, Ben Metcalf notifications@github.com wrote:

Yes, I've looked at this. Did you output the deflection maps? Could you do that for one field?

— Reply to this email directly or view it on GitHub.

rbmetcalf commented 9 years ago

I have looked at the sign of the deflection angle from input COCO fields and find that the sign appears to be correct.