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Strong Gravitational Lens Statistics using the Herschel-ATLAS - 1 views

arxiv.org/1206.4919

statistics Herschel

shared by Phil Marshall on 01 Nov 12 - No Cached

Phil Marshall on 01 Nov 12

Short et al (2012) revisit lens statistics: "The complete Herschel-ATLAS data set should be sufficient to yield competitive constraints on \Omega_\Lambda." By complete set they mean 1000 lenses, and the constraints they derive are +/-0.01 in Omega_Lambda. How optimistic are their strong assumptions about what is known about the sources, lenses, selection function and the rest of cosmology? They do conclude that the sample "will be most powerful in constraining uncertainty in astrophysical processes," but the cosmology opportunity is clearly worth keeping an eye on. It'd be good to see the systematics parameterised and marginalised over.

<div class="cArrow"> </div><div class="cContentInner">Short et al (2012) revisit lens statistics: "The complete Herschel-ATLAS data set should be sufficient to yield competitive constraints on \Omega_\Lambda." By complete set they mean 1000 lenses, and the constraints they derive are +/-0.01 in Omega_Lambda. How optimistic are their strong assumptions about what is known about the sources, lenses, selection function and the rest of cosmology? They do conclude that the sample "will be most powerful in constraining uncertainty in astrophysical processes," but the cosmology opportunity is clearly worth keeping an eye on. It'd be good to see the systematics parameterised and marginalised over.</div>

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