Institute for Nuclear and Particle Astrophysics (INPA) at LBNL

The INPA Seminar weekly talks are on Fridays, starting at 12:00 pm, unless informed otherwise. The seminar talk starts with a brief presentation of the weekly scientific news. Typically, the talks conclude by 1:00 pm. The seminars are held in the Sessler Conference Room,  located in Bldg. 50A- 5132.

The committee members are:

The seminar schedule for the Institute for Nuclear and Particle Astrophysics (INPA) is tentative and becomes final a few days before the Friday talk.

Please send all suggestions for future INPA talks and speakers to the INPA Committee.

To be added to the INPA News Mailing List, please contact Erica Hall.

Loading Events

« All Events

  • This event has passed.

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

September 8, 2023 @ 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.

Join Zoom

Meeting ID: 950 1669 6011
Passcode: 247722


September 8, 2023
12:00 pm - 1:00 pm

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

CPTea Series (also known as INPA Tea Series)

The Physics Division CPTea Series invites you to an In-Person Tea Series 1st Friday of every month at 3:30 pm INPA Conference Room 50-5026.

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. The pass is only valid for the day of the seminar.

Erica Hall