| April 2025 |
| Monday | Tuesday | Wednesday | Thursday | Friday |
| 31 Connor Hainje, A new formula for the area of a triangle, and applications (12:30 PM - 1:30 PM) Aurelio Amerio, Searching dark matter subhalos among unassociated Fermi-LAT sources (2:00 PM - 3:00 PM) + Abstract: William Pannell, Gradient flow and the curvature of theory space (3:10 PM - 4:10 PM) + Abstract: | 1 Bart Ripperda, Are We There Yet? First-principles Modeling of Multimessenger sSignals in the Plasma Universe (11:00 AM - 12:15 PM) + Abstract: Raagini Patki, A Novel Bispectrum extracting the Kinematic SZ effect as a Cosmological Probe (2:00 PM - 2:30 PM) + Abstract: | 2 , HEP Journal Club (12:30 PM - 1:30 PM) Csaba Csaki, Exploring QCD-like dynamics from supersymmetric cousins (2:00 PM - 3:15 PM) + Abstract: | 3 Alessandra Buonanno, Theoretical Challenges in Gravitational-Wave Astronomy (4:00 PM - 5:30 PM) + Abstract: | 4 Dalimil Mazac, Spectral gaps and conformal field theory (10:00 AM - 11:15 AM) + Abstract: Calkins (3:30 PM - 4:30 PM) |
| 7 | 8 Magdalena Siwek, Signatures of Circumbinary Disk Dynamics in Astrophysical Binary Populations (2:00 PM - 3:00 PM) + Abstract: | 9 , HEP Journal Club (12:30 PM - 1:30 PM) Lorenzo Ricci, Conformal collider at work (2:00 PM - 3:15 PM) + Abstract: Cammie Norton, Black Holes and Baby Universes (8:00 PM - 9:30 PM) + Abstract: | 10 Jesse Thaler, Centaur Science: Particle Physics meets Machine Learning (4:00 PM - 5:30 PM) + Abstract: | 11 Calkins (3:30 PM - 4:30 PM) |
| 14 Misha Shaposhnikov, Weyl-invariant Einstein-Cartan gravity: unifying the strong CP and hierarchy puzzles (2:00 PM - 3:15 PM) + Abstract: | 15 Julien Lavalle, Early dressing of primordial black holes with cold dark matter particles (2:00 PM - 3:15 PM) + Abstract: | 16 , HEP Journal Club (12:30 PM - 1:30 PM) Michael Baker, Phase Transitions, Dark Matter and Black Holes (2:00 PM - 3:15 PM) + Abstract: | 17 | 18 Calkins (3:30 PM - 4:30 PM) |
| 21 Marius Kongsore, Generalized Symmetries for the Generalist (12:30 PM - 1:30 PM) Nat Levine, Convexity of scaling dimensions over conformal manifolds (2:00 PM - 3:15 PM) + Abstract: | 22 Gabriela Sato-Polito, Where are the supermassive black holes measured by PTAs? (2:00 PM - 3:15 PM) -- Abstract: Pulsar timing arrays (PTAs) consist of a set of regularly monitored millisecond pulsars with extremely stable rotational periods. The arrival time of pulses can be altered by the passage of gravitational waves (GWs) between them and the Earth, thus serving as a galaxy-wide GW detector. Evidence for the first detection of low-frequency (~nHz) gravitational waves has recently been reported across multiple PTA collaborations, opening a new observational window into the Universe. Although the origin of the GW signal is yet to be determined, the dominant sources are expected to be inspiralling supermassive black holes. I will discuss what we are learning from mapping the nano-hertz GW sky, focusing on a recent work in which we compare the GW detections by PTAs with the expected signal implied by existing electromagnetic observations in a simple but robust manner. We highlight that there is a simple upper limit to the GWB amplitude and that the currently measured GW amplitude is somewhat larger than expected. I will then show that additional information regarding the typical number of sources contributing to the background can already be inferred from current PTA data. | 23 , HEP Journal Club (12:30 PM - 1:30 PM) Giovanni Villadoro, Open String Axiverse (2:00 PM - 3:15 PM) + Abstract: | 24 | 25 Weiguang Cao, Duality viewpoint of noninvertible symmetry protected topological phases (2:00 PM - 3:15 PM) + Abstract: Calkins (3:30 PM - 4:30 PM) |
| 28 Marcus DuPont, Spherical Bondi accretion in a binary black hole system (12:30 PM - 1:30 PM) | 29 Risa Wechsler, Unveiling the nature of dark matter with small-scale cosmic structure (2:00 PM - 3:15 PM) + Abstract: Joan La Madrid, Comments on Gravity (4:00 PM - 5:30 PM) + Abstract: | 30 Calvin Chen, The Power of Precision Astrometry (10:00 AM - 11:30 AM) + Abstract: , HEP Journal Club (12:30 PM - 1:30 PM) Harikrishnan Ramani, Improving prospects for the direct detection of Higgsino dark matter (2:00 PM - 3:15 PM) + Abstract: | 1 Lyman Page, A New Experiment to Search for QCD Axions as Dark Matter (12:30 PM - 1:30 PM) + Abstract: Lyman Page, Exploring the Birth of the Universe with the CMB (4:00 PM - 5:30 PM) + Abstract: | 2 Calkins (3:30 PM - 4:30 PM) |