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SUMMARY:SPEAKER: Noah Sailer (UC Berkeley)- Title: Accurate cosmology from CMB lensing and galaxy surveys
DESCRIPTION:This is an In-Person [HYBRID] Event \nDate:  April 7\, 2023 \nTime: 12:00- 1:00 pm \nLocation:  Sessler Conference Room- 50A-5132 \n\nSpeaker: Noah Sailer (UC Berkeley) \nTitle: Accurate cosmology from CMB lensing and galaxy surveys \nAbstract: \nJoint analyses of CMB lensing and spectroscopically-calibrated galaxies have the ability to measure the evolution of matter fluctuations out to high redshifts without the complications of photometric redshift uncertainties and intrinsic alignments. These measurements are rapidly becoming one of the more powerful tools in a cosmologist’s toolkit\, enabling precise (and accurate) inference of cosmological parameters and potential deviations from ΛCDM. While cross-correlations are typically more robust against systematic effects\, correlated systematics arising from (extra)galactic foreground contamination and masking induce significant biases if not properly accounted for. I will discuss progress towards mitigating these effects\, the implementation of these methods in an ongoing cross-correlation analysis of DESI luminous red galaxies and CMB lensing from ACT\, and the prospects of future analyses with Stage-V spectroscopy and CMB-S4. \n  \nJoin Zoom Meeting\nhttps://lbnl.zoom.uspwd=Tk1XOW1Xd3RYRnlsc2tEYmRWZlVVZz09 \nMeeting ID: 950 1669 6011\n\nPasscode: 247722
URL:https://inpa.lbl.gov/event/speaker-noah-sailer-uc-berkeley-title-accurate-cosmology-from-cmb-lensing-and-galaxy-surveys/
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