Events Calendar

 November 2023        
MondayTuesdayWednesdayThursdayFriday
30
Rashid Sunyaev, X-Ray and microwave cosmology: synergy and competition. What do we expect from the next generation X-ray and microwave telescopes? (11:00 AM - 12:15 PM)

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Soubhik Kumar, Gravitational Waves as Probes of Small-scale Primordial Fluctuations (12:30 PM - 1:30 PM)

Ameen Ismail, Relevant dilaton stabilization (2:00 PM - 3:00 PM)

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Shahrzad Zare, How generalized symmetry provides us with an explanation for the monopole scattering problem (2:00 PM - 3:50 PM)

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31
, Confining Strings Workshop (9:00 AM - 6:00 PM)

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Rashid Sunyaev, SRG/eRosita: An all-sky X-ray map, showing tens of thousands of galaxy clusters, 100 tidal disruption events and the variability of millions of quasars, AGNs and flaring stars (2:00 PM - 3:15 PM)

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Ahmed Almheiri, Exposing the Secrets of Black Holes (4:30 PM - 6:00 PM)

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1
, Confining Strings Workshop (9:00 AM - 6:00 PM)

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David Gross, Fifty Years of Quantum Chromodynamics (The Theory of The Strong Nuclear Force) (2:00 PM - 3:30 PM)

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, CCPP Pheno Journal Club (3:30 PM - 4:30 PM)

2
3
Popov, Postdoc HepTh Discussion Group (12:00 PM - 1:30 PM)

Alexandra Zidovska, Undergrad Research Fair (12:15 PM - 2:15 PM)

Thibault Damour, Black Hole Binary Dynamics from Classical and Quantum Gravitational Scattering (2:30 PM - 3:45 PM)

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6
Simon Lin, Operator algebras in high energy physics (12:30 PM - 1:30 PM)

Zare (2:00 PM - 4:00 PM)

7
Katie Harrington, Pre-deployment Optical Testing for the Simons Observatory (2:00 PM - 3:15 PM)

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8
Andy Haas et al., Ptolemy Experiment / BBn neutrinos (10:30 AM - 12:30 PM)

Riccardo Rattazzi, Softening the UV without new particles (2:00 PM - 3:15 PM)

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, CCPP Pheno Journal Club (3:30 PM - 4:30 PM)

Patrick Breysse (8:00 PM - 9:30 PM)

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9
Naomi Ginsberg, Following and Controlling Formation and Function of Bottom-up Assembled Nanomaterials (4:00 PM - 5:30 PM)

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10
, Memorial Service for Prof. Emeritus Ed Robinson (9:00 AM - 5:00 PM)

Popov, Postdoc HepTh Discussion Group (12:00 PM - 1:30 PM)

13
Shirley Ho, Foundation Models for Science (12:30 PM - 1:30 PM)

Zare (2:00 PM - 4:00 PM)

Chi-Ming Chang, Black hole microstates in AdS (2:00 PM - 3:15 PM)

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14
, Global Categorical Symmetries Workshop (8:00 AM - 6:00 PM)

Aaron Yung, Challenges and first results on modeling halos and galaxies in the ultra-high-redshift universe (2:00 PM - 3:15 PM)

-- Abstract: The superb capabilities of JWST have extended our vision to the ultra-high-redshift universe  (z > 12) and many early JWST surveys have surprisingly revealed an abundance of massive galaxies that challenges conventional galaxy formation models.  In our quest to decipher this cosmic conundrum, we employ the well-established Santa Cruz semi-analytic model (SAM) in tandem with merger trees extracted from the suite of Gadget at Ultrahigh Redshift with Extra-Fine Timesteps (GUREFT) simulations, which consists of 170 snapshots spanning 40 > z > 6 and resolving halos down to progenitor halo masses of log(Mvir/Msun)~5. With these merger trees serving as the robust backbone, we explore and quantify the impact from various sources of uncertainties, including a potentially evolving mass-to-light ratio driven by changes in the IMF, under-reported uncertainties from field-to-field variance, high uncertainties in photometric redshift, etc. In our study, we have also investigated the number density of halo populations in this cosmic epoch, as well as the gas cooling rate and star formation efficient of galaxies, and come to the conclusion that the stellar feedback models currently in place in our model, which is also adopted by many hydrodynamic simulations, is ejecting gas as quickly as halo accrete mass, which deprive our galaxies from forming stars. We will also present timely, new simulated results for various alternative star formation and stellar feedback models and discuss the implied necessary conditions to reproduce the observed ultra-z galaxies.

15
, Global Categorical Symmetries Workshop (8:00 AM - 6:00 PM)

, No HEP Seminar (2:00 PM - 3:15 PM)

16
Zeba Wunderlich, Noise and Competition: Mechanisms of Gene Expression Control in the Early Embryo (4:00 PM - 5:30 PM)

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17
Popov, Postdoc HepTh Discussion Group (12:00 PM - 1:30 PM)

Xinyi Chen, Probing primordial non-Gaussianity by reconstructing the initial conditions with machine learning (12:00 PM - 12:30 PM)

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20
Patrick Rieck, A perspective on the future of experimental particle physics (12:30 PM - 1:30 PM)

Zare (2:00 PM - 4:00 PM)

21
22
, No Classes; University closes @ 4pm

, CCPP Pheno Journal Club (3:30 PM - 4:30 PM)

23
, University Closed

24
, University Closed

Popov, Postdoc HepTh Discussion Group (12:00 PM - 1:30 PM)

27
(12:30 PM - 1:30 PM)

Zare (2:00 PM - 4:00 PM)

28
Burçin Mutlu-Pakdil, The Smallest and Faintest Galaxies: Clues to the Nature of Dark Matter and Galaxy Formation (2:00 PM - 3:15 PM)

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29
Asimina Arvanitaki, The Cosmic Neutrino Background (CνB): Its distribution on the surface of the Earth and its manipulation on laboratory scales (2:00 PM - 3:15 PM)

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30
Chiara Mingarelli, The NANOGrav Experiment: Current Results and Future Directions (3:00 PM - 4:30 PM)

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1
Popov, Postdoc HepTh Discussion Group (12:00 PM - 1:30 PM)

James Sullivan, Galaxies Remember Inflation - New Aspects of Local Primordial non-Gaussianity in Galaxy Surveys (12:00 PM - 12:30 PM)

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