October 2023 – Page 8 – Kavli Institute Pre-Print Publications

${rm S{scriptsize IM}BIG}$: The First Cosmological Constraints from Non-Gaussian and Non-Linear Galaxy Clustering

Posted by dbos October 23, 2023November 6, 2023Tokyo

Kavli Affiliate: David Spergel | First 5 Authors: ChangHoon Hahn, Pablo Lemos, Liam Parker, Bruno Régaldo-Saint Blancard, Michael Eickenberg | Summary: The 3D distribution of galaxies encodes detailed cosmological information on the expansion and growth history of the Universe. We present the first cosmological constraints that exploit non-Gaussian cosmological information on non-linear scales from galaxy […]

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Field-level simulation-based inference with galaxy catalogs: the impact of systematic effects

Posted by dbos October 23, 2023MIT

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Natalí S. M. de Santi, Francisco Villaescusa-Navarro, L. Raul Abramo, Helen Shao, Lucia A. Perez | Summary: It has been recently shown that a powerful way to constrain cosmological parameters from galaxy redshift surveys is to train graph neural networks to perform field-level likelihood-free inference without imposing […]

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Field-level simulation-based inference with galaxy catalogs: the impact of systematic effects

Posted by dbos October 23, 2023November 6, 2023MIT

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Emergence of the Temperature-Density Relation in the Low-Density Intergalactic Medium

Posted by October 23, 2023Chicago

Kavli Affiliate: Nickolay Y. Gnedin | First 5 Authors: Alexandra Wells, David Robinson, Camille Avestruz, Nickolay Y. Gnedin, | Summary: We examine the evolution of the phase diagram of the low-density intergalactic medium during the Epoch of Reionization in simulation boxes with varying reionization histories from the Cosmic Reionization on Computers project. The PDF of […]

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Emergence of the Temperature-Density Relation in the Low Density Intergalactic Medium

Posted by dbos October 23, 2023November 6, 2023Chicago

Kavli Affiliate: Nickolay Y. Gnedin | First 5 Authors: Alexandra Wells, David Robinson, Camille Avestruz, Nickolay Y. Gnedin, | Summary: We examine the evolution of the phase diagram of the low-density intergalactic medium (IGM) during the Epoch of Reionization in simulation boxes with varying reionization histories from the Cosmic Reionization on Computers project. The PDF […]

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Separated twins or just siblings? A multi-planet system around an M dwarf including a cool sub-Neptune

Posted by dbos October 23, 2023MIT

Kavli Affiliate: Roland Vanderspek | First 5 Authors: Mallory Harris, Diana Dragomir, Ismael Mireles, Karen A. Collins, Solène Ulmer-Moll | Summary: We report the discovery of two TESS sub-Neptunes orbiting the early M dwarf TOI-904 (TIC 261257684). Both exoplanets, TOI-904 b and c, were initially observed in TESS sector 12 with twin sizes of 2.49R$_oplus$ […]

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DREAM+: Efficient Dataset Distillation by Bidirectional Representative Matching

Posted by dbos October 23, 2023November 6, 2023UCAS

Kavli Affiliate: Zheng Zhu | First 5 Authors: Yanqing Liu, Jianyang Gu, Kai Wang, Zheng Zhu, Kaipeng Zhang | Summary: Dataset distillation plays a crucial role in creating compact datasets with similar training performance compared with original large-scale ones. This is essential for addressing the challenges of data storage and training costs. Prevalent methods facilitate […]

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Atmospheric carbon depletion as a tracer of water oceans and biomass on temperate terrestrial exoplanets

Posted by dbos October 23, 2023MIT

Kavli Affiliate: Sara Seager | First 5 Authors: Amaury H. M. J. Triaud, Julien de Wit, Frieder Klein, Martin Turbet, Benjamin V. Rackham | Summary: The conventional observables to identify a habitable or inhabited environment in exoplanets, such as an ocean glint or abundant atmospheric O$_2$, will be challenging to detect with present or upcoming […]

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Atmospheric carbon depletion as a tracer of water oceans and biomass on temperate terrestrial exoplanets

Posted by dbos October 23, 2023November 6, 2023MIT

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Calibration of Time-Series Forecasting: Detecting and Adapting Context-Driven Distribution Shift

Posted by dbos October 23, 2023Peking

Kavli Affiliate: Zhuo Li | First 5 Authors: Mouxiang Chen, Lefei Shen, Han Fu, Zhuo Li, Jianling Sun | Summary: Recent years have witnessed the success of introducing deep learning models to time series forecasting. From a data generation perspective, we illustrate that existing models are susceptible to distribution shifts driven by temporal contexts, whether […]

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