Speaker
Description
The weak gravitation lensing of the Cosmic Microwave Background
(CMB) [1] rows a wealth of information about the late-time universe in the
CMB data we observe through ground-based and space-based telescopes.
In this talk, I propose a method to probe Galaxy-cluster mass profiles
from the lensing signature of CMB in arcmin scales. In the first part, I
describe how a theoretical halo model [2] for a cluster gives rise to lensing
signatures in the observed CMB. In the second part, I discuss how we are
developing a method based on Maximum a posterior (MAP) estimator [3]
of lensing potential to recover the cluster mass. Such an estimator will be
influential in light of low noise level experiments like CMB S4.
References
[1] A. Lewis and A. Challinor, Weak gravitational lensing of the CMB, Phys.
Rept. 429 (2006) 1 [astro-ph/0601594].
[2] J.F. Navarro, C.S. Frenk and S.D.M. White, The Structure of cold dark
matter halos, Astrophys. J. 462 (1996) 563 [astro-ph/9508025].
[3] J. Carron and A. Lewis, Maximum a posteriori CMB lensing
reconstruction, Phys. Rev. D 96 (2017) 063510 [1704.08230].
| Would you be interested in presenting a poster? (this will not impact the decision on your talk) | yes |
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