Kavli Affiliate: Saul Rappaport | First 5 Authors: Kevin B. Burdge, Kareem El-Badry, Saul Rappaport, Tin Long Sunny Wong, Evan B. Bauer | Summary: We report the discovery of ZTF J0127+5258, a compact mass-transferring binary with an orbital period of 13.7 minutes. The system contains a white dwarf accretor, which likely originated as a post-common […]
Kavli Affiliate: Max Tegmark | First 5 Authors: Eric J. Michaud, Ziming Liu, Uzay Girit, Max Tegmark, | Summary: We propose the Quantization Model of neural scaling laws, explaining both the observed power law dropoff of loss with model and data size, and also the sudden emergence of new capabilities with scale. We derive this […]
Kavli Affiliate: Max Tegmark | First 5 Authors: Eric J. Michaud, Ziming Liu, Uzay Girit, Max Tegmark, | Summary: We propose the Quantization Model of neural scaling laws, explaining both the observed power law dropoff of loss with model and data size, and also the sudden emergence of new capabilities with scale. We derive this […]
Kavli Affiliate: Anna Frebel | First 5 Authors: Xiaowei Ou, Anna-Christina Eilers, Lina Necib, Anna Frebel, | Summary: In this paper, we construct the circular velocity curve of the Milky Way out to $sim 30$ kpc, providing an updated model of the dark matter density profile. We derive precise parallaxes for 120,309 stars with a […]
Kavli Affiliate: Herman L. Marshall | First 5 Authors: Jakub Podgorny, Lorenzo Marra, Fabio Muleri, Nicole Rodriguez Cavero, Ajay Ratheesh | Summary: We report on an X-ray polarimetric observation of the high-mass X-ray binary LMC X-1 in the high/soft state, obtained by the Imaging X-ray Polarimetry Explorer (IXPE) in October 2022. The measured polarization is […]
Kavli Affiliate: Erin Kara | First 5 Authors: Honghui Liu, Jiachen Jiang, Zuobin Zhang, Cosimo Bambi, Andrew C. Fabian | Summary: We present a high-density relativistic reflection analysis of 21 spectra of six black hole X-ray binaries in the hard state with data from textit{NuSTAR} and textit{Swift}. We find that 76% of the observations in […]
Kavli Affiliate: Michael M. Fausnaugh | First 5 Authors: Michael M. Fausnaugh, Rahul Jayaraman, Roland Vanderspek, George R. Ricker, Christopher J. Burke | Summary: We present the TESS light curve of GRB 230307A. We find two distinct components: a bright, prompt optical component at the time of the Fermi observation that peaked at TESS magnitude […]
Kavli Affiliate: Saul A. Rappaport | First 5 Authors: Sarah Kubiak, Andrew Vanderburg, Juliette Becker, Bruce Gary, Saul A. Rappaport | Summary: WD 1856+534 b (or WD 1856 b for short) is the first known transiting planet candidate around a white dwarf star. WD 1856 b is about the size of Jupiter, has a mass […]
Kavli Affiliate: Herman L. Marshall | First 5 Authors: Alexandra Veledina, Fabio Muleri, Juri Poutanen, Jakub Podgorný, Michal Dovčiak | Summary: The accretion of matter by compact objects can be inhibited by radiation pressure if the luminosity exceeds the critical value, known as the Eddington limit. Discovery of ultraluminous X-ray sources has shown that accretion […]
Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Natalí S. M. de Santi, Helen Shao, Francisco Villaescusa-Navarro, L. Raul Abramo, Romain Teyssier | Summary: We train graph neural networks to perform field-level likelihood-free inference using galaxy catalogs from state-of-the-art hydrodynamic simulations of the CAMELS project. Our models are rotational, translational, and permutation invariant and do […]