| October 2025 |
| Monday | Tuesday | Wednesday | Thursday | Friday |
| 29 Grant Remmen, Strings from almost nothing (12:30 PM - 1:30 PM) | 30 Isabel Sands, Astro-particle Phenomena from Dark Matter and Cosmic Rays in MHD Galaxy Formation Simulations (2:00 PM - 3:15 PM) + Abstract | 1 Fabrizio Rompineve, Gravitational waves from the early Universe and cosmic Domain Walls (2:00 PM - 3:15 PM) + Abstract Mathew Calkins (4:00 PM - 5:30 PM) | 2 Astro Journal Club, Ian Williams & Arjun Suresh (11:00 AM - 12:00 PM) Daniel Harlow, Quantum black holes and the emergence of space and time (4:00 PM - 5:30 PM) + Abstract | 3 Andrea Cappelli, Hydrodynamics with anomalies and effective field theory (1:30 PM - 2:30 PM) + Abstract |
| 6 Gus Beane, How To Simulate a Galaxy (12:30 PM - 1:30 PM) | 7 Gabriele Franciolini, Searching for subsolar mass primordial black holes with gravitational waves (2:00 PM - 3:15 PM) + Abstract | 8 Oliver Janssen, A prior on initial conditions in inflation from the gravitational path integral? (2:00 PM - 3:00 PM) + Abstract Mathew Calkins (4:00 PM - 5:30 PM) | 9 Astro Journal Club, Ian Williams & Arjun Suresh (11:00 AM - 12:00 PM) Marcelo Rozenberg, Simple Memristive Circuits for Brain-Inspired Computing (4:00 PM - 5:30 PM) + Abstract | 10 Lukas Lindwasser, Where is the KdV equation? Mapping the space of integrable equations (12:00 PM - 1:00 PM) + Abstract |
| 13 | 14 Eliot Quataert, The Fates of Stars Orbiting too Close to Massive Black Holes (2:00 PM - 3:15 PM) + Abstract | 15 Maryum Sayeed, Looking for Companionship: Testing Binarity of Lithium-Rich Red Giants (11:00 AM - 11:30 AM) + Abstract Maria Nocchi, A double-copy picture of strings in AdS (2:00 PM - 3:00 PM) + Abstract Mathew Calkins (4:00 PM - 5:30 PM) | 16 Astro Journal Club, Ian Williams & Arjun Suresh (11:00 AM - 12:00 PM) Simon Sponberg, Supra-resonant Dynamics and Self-excited Oscillations in Insect Flight (4:00 PM - 5:30 PM) + Abstract | 17 Eliezer Rabinovici, On Persistent Symmetry Breaking (2:00 PM - 3:00 PM) + Abstract |
| 20 Itai Linial, Dynamics and Formation of Energetic Transients near Massive Black Holes (12:30 PM - 1:30 PM) | 21 Colin Hill, Uncovering Physics Beyond the Standard Model in the Cosmic Microwave Background (2:00 PM - 3:15 PM) -- Abstract: The cosmic microwave background (CMB) anisotropies remain the cleanest, most powerful probe of fundamental physics in the cosmos. Measurements of the small-scale CMB temperature and polarization fields have recently undergone transformative improvements with Data Release 6 (DR6) of the Atacama Cosmology Telescope (ACT) and will soon improve further with the Simons Observatory, which will open new windows into physics beyond the standard models (BSM) of particle physics and cosmology. I will first discuss our recent cosmological parameter constraints from the ACT DR6 CMB power spectra, with a particular emphasis on constraining BSM physics operating just prior to recombination, including new relativistic particles and new pseudo-scalar fields. I will then turn to novel searches for BSM physics in CMB secondary anisotropies, as could be imprinted by the screening of CMB photons by massive dark photons (DPs) or axion-like particles. I will show the first results of searches for these signals in CMB data, enabled by our state-of-the-art needlet internal linear combination code, yielding leading bounds on kinetically mixed DPs and axion-photon couplings covering two decades in DP or axion particle mass. I will conclude with a look ahead to the prospects for BSM physics from the Simons Observatory. | 22 Badal Bhalla, Three-body Encounters with Primordial Black Holes (11:00 AM - 12:00 PM) + Abstract Elizabeth Himwich, w(1+infinity) Symmetry in 4D Gravitational Scattering and Celestial Holography (2:00 PM - 3:15 PM) + Abstract Mathew Calkins (4:00 PM - 5:30 PM) | 23 Astro Journal Club, Ian Williams & Arjun Suresh (11:00 AM - 12:00 PM) Priyamvada Natarajan, New Insights Into the Formation of the First Black Holes (4:00 PM) + Abstract | 24 |
| 27 Hector Afonso Cruz, The First Billion Years in Seconds: A Fast Analytical Model for the 21-cm Cosmology with Population III Stars (12:30 PM - 1:30 PM) Marc Henneaux, The Wheeler-DeWitt equation and the BMS symmetry (2:00 PM - 2:50 PM) + Abstract | 28 Alvise Raccanelli, Learning clustering in Plato’s cave (11:00 AM - 12:00 PM) + Abstract Neelima Sehgal, Discoveries from CMB-HD (2:00 PM - 3:15 PM) + Abstract Javad Shabani, Chalk Talk: 2025 Nobel Prize Winners Research (3:30 PM - 4:45 PM) + Abstract | 29 Saniya Heeba, Dark Matter @ Finite Temperature (2:00 PM - 3:15 PM) + Abstract Mathew Calkins (4:00 PM - 5:30 PM) | 30 Astro Journal Club, Ian Williams & Arjun Suresh (11:00 AM - 12:00 PM) Thibault Damour, High-Precision Gravitational Scattering (2:00 PM - 3:00 PM) Stefano Martiniani, Though This Be Disorder, Yet There Is Order in’t (4:00 PM - 5:30 PM) + Abstract | 31 Sebastian-Philip Harris, Holographic Interfaces in Symmetric Product Orbifolds (11:00 AM - 12:15 PM) + Abstract Chrysoula Markou, Building string spectra (12:30 PM - 1:30 PM) + Abstract |