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Add to Calendar 2/7/2018 12:00 pm 2/7/2018 America/Chicago Astrophysics, Gravitation and Cosmology Seminar: "Measuring masses of galaxy clusters using CMB-cluster lensing" DESCRIPTION:

Galaxy clusters are the largest gravitationally bound objects in the Universe and are excellent cosmological probes. Their power as cosmological probes, however, is currently limited by the systematics involved in the measurement of their mass. In this talk, I will discuss the method to estimate their masses using the weak-gravitational lensing of the Cosmic Microwave Background (CMB). I will explain the systematics involved in the measurements and the importance of using CMB polarisation data in the future. Finally I will discuss the uncertainties in the mass estimates for the current CMB experiments and provide realistic forecasts for the CMB-S3/S4 experiments.

\n\nSPEAKER:

Srini Raghunathan, University of Melbourne

464 Loomis

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Astrophysics, Gravitation and Cosmology Seminar: "Measuring masses of galaxy clusters using CMB-cluster lensing"

Speaker Srini Raghunathan, University of Melbourne
Date: 2/7/2018
Time: 12 p.m.
Location:

464 Loomis

Event Contact: Betsy Greifenkamp
greifenk@illinois.edu
Sponsor:

Department of Physics

Event Type: Seminar/Symposium
 

Galaxy clusters are the largest gravitationally bound objects in the Universe and are excellent cosmological probes. Their power as cosmological probes, however, is currently limited by the systematics involved in the measurement of their mass. In this talk, I will discuss the method to estimate their masses using the weak-gravitational lensing of the Cosmic Microwave Background (CMB). I will explain the systematics involved in the measurements and the importance of using CMB polarisation data in the future. Finally I will discuss the uncertainties in the mass estimates for the current CMB experiments and provide realistic forecasts for the CMB-S3/S4 experiments.

To request disability-related accommodations for this event, please contact the person listed above, or the unit hosting the event.

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