Particle Physics Seminar

"Tension between the local Universe and the CMB: should the LCDM model be challenged or not?"

Presented by Dr. Thomas de Jaeger, University of Hawaii

Thursday, April 28, 2022, 3:00 pm — Videoconference / Virtual Event (see link below)

Abstract: The most stringent local measurement of the Hubble constant from Cepheid-calibrated Type Ia supernovae differs from the value inferred via the cosmic microwave background radiation (Planck + LCDM) by more than five sigmas. This so-called "Hubble tension" has been confirmed by other independent methods and thus does not appear to be a possible consequence of systematic errors. Additionally to the "Hubble tension", the structures' growth rate seems different between the local Universe and the CMB. In this talk, I will describe an independent approach to test the second and third rungs of the distance-ladder method using Type II supernovae to understand those tensions better. Finally, I will also present preliminary results on Type Ia supernovae in near-infrared and the Hawaii Supernova Flows project to measure the matter distribution.

Hosted by: Sreevarsha Sreejith

Join Videoconference More Information

17607  |  INT/EXT  |  Events Calendar


Not all computers/devices will add this event to your calendar automatically.

A calendar event file named "calendar.ics" will be placed in your downloads location. Depending on how your device/computer is configured, you may have to locate this file and double click on it to add the event to your calendar.

Event dates, times, and locations are subject to change. Event details will not be updated automatically once you add this event to your own calendar. Check the Lab's Events Calendar to ensure that you have the latest event information.