Events List

DateEvent TypeSpeaker
04/02/2024Astro SeminarThales Gutcke [ + ]
04/02/2024Grad Pheno Journal Club [ + ]
04/03/2024ArXiv DiscussionHEP/Pheno Journal Club [ + ]
04/03/2024HEP SeminarTaewook Youn [ + ]
04/04/2024Physics Dept ColloquiumItai Cohen [ + ]
04/05/2024HEP Discussion SessionsZare [ + ]
04/09/2024Astro SeminarMatthew McQuinn [ -- ]

Title: A new concept to measure geometrically the expansion of the universe
Abstract: With several small radio dishes in the outer solar system, it appears possible to measure the distances to fast radio bursts that originate hundreds of megaparsecs away and thereby measure the cosmic expansion history using a geometric method that is similar to the trilaterations of global satellite navigation systems (https://arxiv.org/abs/2210.07159). The sensitivity scales quadratically with dish separations such that distance measurements to bursts even on the other side of the observable universe may be possible. Not only could this technique potentially provide a much more precise geometric constraint on the cosmic expansion history, but such a mission could also provide interesting constraints on micro-Hertz gravitational waves, pulsars, the outer solar system, and the dark matter. While this idea is ambitious, and there is certainly an argument that we do not need to measure the expansion better than we already have (which I will address), another reason to attend this talk is that this concept involves so much interesting physics related to GPS systems, very long baseline interferometry, plasma propagation effects, gravitational time delays, and the diffuse outer solar system. (2:00 PM - 3:00 PM, 726 Broadway, 940, CCPP Seminar)
04/10/2024Special SeminarOr Graur [ + ]
04/10/2024HEP SeminarClifford Cheung [ + ]
04/11/2024Physics Dept ColloquiumKaren Kasza [ + ]
04/12/2024HEP Discussion SessionsZare [ + ]
04/16/2024Grad Pheno Journal Club [ + ]
04/17/2024ArXiv DiscussionHEP/Pheno Journal Club [ + ]
04/17/2024HEP SeminarDeog Ki Hong [ + ]
04/17/2024Cosmic Happy HourTony Zhou [ + ]
04/18/2024Informal HEP TalkThomas Faulkner [ + ]
04/18/2024Physics Dept ColloquiumJohn Eiler [ + ]
04/19/2024Informal HEP TalkEdward Mazenc [ + ]
04/19/2024Special SeminarJohn Eiler [ + ]
04/19/2024HEP Discussion SessionsZare [ + ]
04/22/2024CCPP Brown BagDavid Hogg [ + ]
04/23/2024Astro SeminarNikhil Padmanabhan [ + ]
04/23/2024Grad Pheno Journal Club [ + ]
04/24/2024HEP SeminarT Daniel Brennan [ + ]
04/25/2024Oral DefenseNicholas Faucher [ + ]
04/25/2024Physics Dept ColloquiumDavid Awschalom [ + ]
04/26/2024HEP Discussion SessionsZare [ + ]
04/29/2024CCPP Brown BagGiovanni Verza [ + ]
04/30/2024Astro SeminarAnna Suliga [ + ]
04/30/2024Grad Pheno Journal Club [ + ]