About the INPA Seminars

All seminars are on Fridays (unless otherwise noted) and start at 12:00 (noon) with a brief presentation of the weekly scientific news. Typically the talks end by 13:00. The seminars take place in Bldg. 50A, room 5132.

The committee members are:

The following Seminar schedule for the Institute for Nuclear and Particle Astrophysics is tentative. The seminar becomes final usually a few days before the Friday of the talk.

If you have questions, comments, suggestions or like to be added to the INPA News mailing list please contact: Erica Hall 510-486-4903

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Speaker: Naim Göksel Karaçaylı (Ohio State University) Title: 1D Lyman-alpha forest power spectrum from the DESI early data

September 8 @ 12:00 pm - 1:00 pm

DATE: September 8, 2023

TIME: 12:00- 1:00 PM

LOCATION: 50A-5-5132-CR-Sessler 

SPEAKER:  Naim Göksel Karaçaylı (Ohio State University)

TITLE: 1D Lyman-alpha forest power spectrum from the DESI early data

ABSTRACT: 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.

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Meeting ID: 950 1669 6011
Passcode: 247722


September 8
12:00 pm - 1:00 pm

INPA guests from campus can now come up to the lab early on Fridays. The INPA Common Room (50-5026) is reserved for our guests from 10:00 am to 12:00 noon, and from 1 pm to 5 pm. Note that the seminars are now held in 50A-5132 to accommodate a larger number of attendees.

Also, on Fridays from 1:00 pm to 2:00 pm you are welcome to join the INPA Speaker for a brown-bag lunch in the small Pers Hall conference room, 54-130B.

INPA Tea Series

The Physics and Nuclear Science Divisions have together been leaders in revolutionary changes in our understanding of neutrinos and cosmology. Everyone is welcome to attend the open forum. Tea and light refreshments will be served.

INPA Common Room (50-5026)
3:30 pm

Access to the Lab

For a shuttle pass please email Erica Hall. Please note: the pass is only valid for the day of the seminar.

If you have questions, comments, or suggestions please contact, preferably via email, Erica Hall.