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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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On rates of supernovae strongly lensed by galactic haloes in Millennium Simulation - 2 views

arxiv.org/1212.1063

cosmography LSST statistics Stripe82 simulations

shared by rgavazzi on 06 Dec 12 - No Cached

rgavazzi on 06 Dec 12

Would be nice to make similar forecast for Euclid (~40 epochs in the Deep Caps)

<div class="cArrow"> </div><div class="cContentInner">Would be nice to make similar forecast for Euclid (~40 epochs in the Deep Caps)</div>

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[1212.2650] Inferring the mass of sub-millimetre galaxies by exploiting their gravitati... - 2 views

arxiv.org/1212.2650

shared by Jean-Paul Kneib on 13 Dec 12 - No Cached

Jean-Paul Kneib on 13 Dec 12

Intersting way to estimate the mass of SMM galaxies

<div class="cArrow"> </div><div class="cContentInner">Intersting way to estimate the mass of SMM galaxies</div>

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The SOAR Gravitational Arc Survey - I: Survey overview and photometric catalogs - 2 views

arxiv.org/1210.4136

clusters arcfinding SDSS Stripe82

shared by Phil Marshall on 18 Oct 12 - No Cached

Phil Marshall on 18 Oct 12

Furlanetto et al selected 50-odd clusters in SDSS stripe 82 by richness, in two redshift bins, and then re-imaged in g, r and i at SOAR. Image quality is comparable to median LSST, but depth is only 22-23mag. Interesting sample for algorithm validation, but they are also interested in arc statistics

<div class="cArrow"> </div><div class="cContentInner">Furlanetto et al selected 50-odd clusters in SDSS stripe 82 by richness, in two redshift bins, and then re-imaged in g, r and i at SOAR. Image quality is comparable to median LSST, but depth is only 22-23mag. Interesting sample for algorithm validation, but they are also interested in arc statistics</div>

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