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SUMMARY:Speaker: Naim Göksel Karaçaylı (Ohio State University) Title: 1D Lyman-alpha forest power spectrum from the DESI early data
DESCRIPTION:DATE: September 8\, 2023 \nTIME: 12:00- 1:00 PM \nLOCATION: 50A-5-5132-CR-Sessler  \nSPEAKER:  Naim Göksel Karaçaylı (Ohio State University) \nTITLE: 1D Lyman-alpha forest power spectrum from the DESI early data \nABSTRACT: The one-dimensional power spectrum P1D of the Lya forest provides important information including constraints on warm dark matter models\, the sum of the neutrino masses\, and the thermal state of the intergalactic medium. I will present the first measurement of P1D with the quadratic maximum likelihood estimator (QMLE) applied to 54\,600 quasars from DESI early data. Our analysis demonstrates the percent-level performance of the spectroscopic pipeline noise estimation and the spectrograph resolution matrix. Even though the pipeline is exceptional\, noise calibration and spectrograph resolution remain as major sources of systematics. \nJoin Zoom  \nhttps://lbnl.zoom.us/j/95016696011?pwd=Tk1XOW1Xd3RYRnlsc2tEYmRWZlVVZz09 \nMeeting ID: 950 1669 6011\nPasscode: 247722
URL:https://inpa.lbl.gov/event/speaker-naim-goksel-karacayli-ohio-state-university-title-1d-lyman-alpha-forest-power-spectrum-from-the-desi-early-data/
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