Modjaz Group Mtg (2:00 PM - 3:30 PM)

Soubhik Kumar, Primordial Non-Gaussianity as a probe of (ultra high-energy) gauge theories (2:30 PM - 3:30 PM)

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Maria Okounkova, Binary black holes beyond general relativity (2:00 PM - 3:15 PM)

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SPS Room Hold (6:30 PM - 8:30 PM)

Bryan Ostdiek, Machine learning the Milky Way Halo with Gaia: Evidence for a new stellar stream in the solar vicinity (2:00 PM - 3:30 PM)

-- Abstract: We develop a method for using a neural network to distinguish which stars fell onto the Milky Way versus those that we born with the galaxy. The network only uses kinematic input, which greatly extends the number of stars in the Gaia dataset which can be classified. The network is first trained on a cosmological zoom-in hydrodynamic simulated galaxy from the FIRE collaboration. A method known as transfer learning allows the network to train on a cross-matched Gaia/Rave dataset, which improvs the sensitivity to properties of the real Milky Way. Using the network’s classification of Gaia stars, we present evidence for a vast new stellar stream in the vicinity of the Sun. The kinematics of the stream stars are distinct from those of both the thin and thick disk. In particular, its rotational speed lags the disk by ~ 80 kms and its stars follow more eccentric orbits. A small number of Nyx stars have chemical abundances or inferred ages; from these, we deduce that the stream stars have a peak metallicity of [Fe/H] ~ -0.5 and ages 10-13 Gyr. Taken together with the kinematic observations, these results strongly favor the interpretation that Nyx is the remnant of a disrupted dwarf galaxy.

Astroparticle Group Mtg (3:30 PM - 5:00 PM)

Dmitri Chklovskii, Reverse Engineering the Brain: A Physicist's Approach (4:00 PM - 5:00 PM)

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CQP UPS (11:00 AM - 12:30 PM)

NYU-CCA (1:00 PM - 2:30 PM)

Pablo Quílez, On the Peccei-Quinn quality problem (1:30 PM - 3:00 PM)

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Modjaz Group Mtg (2:00 PM - 3:30 PM)

Townhall practice (5:00 PM - 6:00 PM)

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Jack Setford, Signatures of Mirror Stars (2:00 PM - 3:30 PM)

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Astroparticle Group Mtg (3:30 PM - 5:00 PM)

David Poland, Critical Phenomena and the Conformal Bootstrap (4:00 PM - 5:00 PM)

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Town Hall (12:00 PM - 2:00 PM)

Andrea Caputo, Looking for Axion Dark Matter: from Dwarf Galaxies to Pulsars (2:00 PM - 3:00 PM)

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Juan Maldacena, Black holes, entropy and quantum information (2:00 PM - 3:30 PM)

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Astroparticle Group Mtg (3:30 PM - 5:00 PM)

Joshua Ruderman, undergrad quantum midterm review (6:30 PM - 11:59 PM)

Mark Van Raamsdonk, Gravity and Entanglement (4:00 PM - 5:00 PM)

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NYU-CCA (1:00 PM - 2:30 PM)

Alexander Vilenkin, Flyover vacuum decay (1:30 PM - 3:00 PM)

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Shengqi Yang, Line Intensity Mapping (12:30 PM - 2:00 PM)

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Modjaz Group Mtg (2:00 PM - 3:30 PM)

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Gopolang Mohlabeng, Inelastic dark matter revives the dark photon explanation of the muon g-2 anomaly (2:00 PM - 3:30 PM)

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Astroparticle Group Mtg (3:30 PM - 5:00 PM)

Josh Ruderman, Knowns and Unknowns in Particle Physics (4:00 PM - 5:00 PM)

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Modjaz Group Mtg (2:00 PM - 3:30 PM)

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Tim Linden, Using Neutron Stars to Probe Fundamental Physics (2:00 PM - 3:30 PM)

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Astroparticle Group Mtg (3:30 PM - 5:00 PM)

Ian Dobbs-Dixon, Modelling Atmospheres of Short Period Gas Planets (4:00 PM - 5:00 PM)

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NYU-CCA (1:00 PM - 2:30 PM)