Yu-Dai Tsai, Los Alamos National Laboratory скачать в хорошем качестве

Yu-Dai Tsai, Los Alamos National Laboratory

University of Arizona, Theoretical Astrophysics Program (TAP) Colloquia Series TITLE: Detecting Dark Matter (Gravitationally) in the Solar System - Planetary Defense, Space Mission & Quantum Sensors ABSTRACT: Dark matter, neutrinos, and gravity interact feebly with the rest of the Standard Model particles, yet govern how the Universe evolves and operates. Together, they are the elusive parts of the Universe that have profound implications for particle physics, astrophysics, and cosmology. In this talk, I will use the planetary-defense mission, OSIRIS-REx, and the precision tracking data of the dangerous (potentially hazardous) asteroid Bennu, to establish new constraints on the gravitational interaction of dark matter in the solar system [1]. I will also utilize the ultra-precision astrometric data to set world-leading constraints on cosmic neutrino over density and hidden fifth forces. Furthermore, I propose a space mission concept with quantum clocks (inspired by the NASA Deep Space Atomic Clock, DSAC) onboard a future solar probe (inspired by the Parker Solar Probe) to search for ultralight dark matter bound to the Sun [2]. Such a mission would allow us to probe theoretically motivated wave-like/fuzzy dark matter models with distinctive cosmic evolutions and particle-physics consequences. If time permits, I will discuss the ultimate roadmap to detect dark matter pure gravitationally in the solar system and determine the particle versus wave property of dark matter. [1] Tsai et al., JCAP (2023), JCAP (2024), Communications Physics - Nature (2024) [2] Tsai et al., Nature Astronomy (2023) BIO: Dr. Tsai is a Director's Fellow at the Los Alamos National Laboratory. He received his PhD at Cornell University and was a postdoc at Fermilab and the University of California, Irvine. Dr. Tsai's research sits at the intersection of particle physics, astroparticle physics, and cosmology, developing theories, searches, and small-scale experiments to probe fundamental laws of physics. He currently focuses on exploring the Elusive Universe, consisting of dark matter, neutrinos, and gravity, studying their signatures in neutrino experiments, space missions, and quantum sensors. Several of his small-scale experiments and search concepts are being implemented in national laboratories worldwide. One of the ultimate goals of Dr. Tsai is to detect dark matter pure gravitationally in the solar system.