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
- This event has passed.
[SPECIAL] Speaker: Roohi Dalal (Princeton University)- Title: Cosmology and Systematics from Hyper Suprime-Cam Year 3 Data
June 2 @ 12:00 pm - 1:00 pm
This is an In-Person [HYBRID] Event
LOCATION: Sessler Conference Room 50A-5132
DATE: June 2, 2023
TIME: 12:00- 1:00 PM
TITLE: Cosmology and Systematics from Hyper Suprime-Cam Year 3 Data
ABSTRACT: The Hyper Suprime-Cam (HSC) survey is the deepest Stage III weak lensing experiment, going to ~26 mag with exquisite seeing. The depth and image quality achieved by HSC allow us to probe cosmology using weak lensing upto high redshifts, and these analyses serve as important preparatory studies for the next generation of weak lensing surveys. I will discuss our constraints on cosmological parameters using weak lensing cosmic shear power spectra measured from the Year 3 shear catalog of HSC, covering 416 square degrees of the northern sky. After giving a brief overview of our cosmological analysis, and our new constraint on the S8 parameter, I will focus on systematics that have been important and distinguishing factors in our analysis, including photometric redshift uncertainties, systematics from higher order PSF moments, and uncertainties in the modeling of baryonic feedback. I will show that we have made a number of conservative choices to ensure that our analysis is robust to these systematics and share some lessons learned that will enable future surveys to hopefully no longer be limited by such systematics.
Join Zoom
https://lbnl.zoom.us/j/95016696011?pwd=Tk1XOW1Xd3RYRnlsc2tEYmRWZlVVZz09
Meeting ID: 950 1669 6011
Passcode: 247722
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)
Fridays
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.