First Calculations of Starspot Spectra based on 3D Radiative Magnetohydrodynamics Simulations

Kavli Affiliate: Sara Seager | First 5 Authors: H. N. Smitha, Alexander I. Shapiro, Veronika Witzke, Nadiia M. Kostogryz, Yvonne C. Unruh | Summary: Accurate calculations of starspot spectra are essential for multiple applications in astronomy. The current standard is to represent starspot spectra by spectra of stars that are cooler than the quiet star […]


Continue.. First Calculations of Starspot Spectra based on 3D Radiative Magnetohydrodynamics Simulations

Planets Around Solar Twins/Analogs (PASTA) I.: High precision stellar chemical abundance for 17 planet-hosting stars and the condensation temperature trend

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: Qinghui Sun, Sharon Xuesong Wang, Tianjun Gan, Chenyang Ji, Zitao Lin | Summary: The Sun is depleted in refractory elements compared to nearby solar twins, which may be linked to the formation of giant or terrestrial planets. Here we present high-resolution, high signal-to-noise spectroscopic data for 17 […]


Continue.. Planets Around Solar Twins/Analogs (PASTA) I.: High precision stellar chemical abundance for 17 planet-hosting stars and the condensation temperature trend

Planets Around Solar Twins/Analogs (PASTA) I.: High precision stellar chemical abundance for 17 planet-hosting stars and the condensation temperature trend

Kavli Affiliate: Roland Vanderspek | First 5 Authors: Qinghui Sun, Sharon Xuesong Wang, Tianjun Gan, Chenyang Ji, Zitao Lin | Summary: The Sun is depleted in refractory elements compared to nearby solar twins, which may be linked to the formation of giant or terrestrial planets. Here we present high-resolution, high signal-to-noise spectroscopic data for 17 […]


Continue.. Planets Around Solar Twins/Analogs (PASTA) I.: High precision stellar chemical abundance for 17 planet-hosting stars and the condensation temperature trend

Planets Around Solar Twins/Analogs (PASTA) I.: High precision stellar chemical abundance for 17 planet-hosting stars and the condensation temperature trend

Kavli Affiliate: George R. Ricker | First 5 Authors: Qinghui Sun, Sharon Xuesong Wang, Tianjun Gan, Chenyang Ji, Zitao Lin | Summary: The Sun is depleted in refractory elements compared to nearby solar twins, which may be linked to the formation of giant or terrestrial planets. Here we present high-resolution, high signal-to-noise spectroscopic data for […]


Continue.. Planets Around Solar Twins/Analogs (PASTA) I.: High precision stellar chemical abundance for 17 planet-hosting stars and the condensation temperature trend

Expanding the ultracompacts: gravitational wave-driven mass transfer in the shortest-period binaries with accretion disks

Kavli Affiliate: Scott A. Hughes | First 5 Authors: Joheen Chakraborty, Kevin B. Burdge, Saul A. Rappaport, James Munday, Hai-Liang Chen | Summary: We report the discovery of three ultracompact binary white dwarf systems hosting accretion disks, with orbital periods of 7.95, 8.68, and 13.15 minutes. This significantly augments the population of mass-transferring binaries at […]


Continue.. Expanding the ultracompacts: gravitational wave-driven mass transfer in the shortest-period binaries with accretion disks

Expanding the ultracompacts: gravitational wave-driven mass transfer in the shortest-period binaries with accretion disks

Kavli Affiliate: Scott A. Hughes | First 5 Authors: Joheen Chakraborty, Kevin B. Burdge, Saul A. Rappaport, James Munday, Hai-Liang Chen | Summary: We report the discovery of three ultracompact binary white dwarf systems hosting accretion disks, with orbital periods of 7.95, 8.68, and 13.15 minutes. This significantly augments the population of mass-transferring binaries at […]


Continue.. Expanding the ultracompacts: gravitational wave-driven mass transfer in the shortest-period binaries with accretion disks

Probing false vacuum decay on a cold-atom gauge-theory quantum simulator

Kavli Affiliate: Frank Wilczek | First 5 Authors: Zi-Hang Zhu, Ying Liu, Gianluca Lagnese, Federica Maria Surace, Wei-Yong Zhang | Summary: In the context of quantum electrodynamics, the decay of false vacuum leads to the production of electron-positron pair, a phenomenon known as the Schwinger effect. In practical experimental scenarios, producing a pair requires an […]


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A Novel Density Profile for Isothermal Cores of Dark Matter Halos

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Vinh Tran, Xuejian Shen, Mark Vogelsberger, Daniel Gilman, Stephanie O’Neil | Summary: We present a novel density profile for halos in self-interacting dark matter (SIDM) models, which accurately captures the flat- and isothermal-core configurations. We show analytically how our density profile satisfies these conditions, with comparisons to […]


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A Time-Dependent Spectral Analysis of $γ$ Cassiopeiae

Kavli Affiliate: Moritz Guenther | First 5 Authors: Sean J. Gunderson, David P. Huenemoerder, José M. Torrejón, Dustin K. Swarm, Joy S. Nichols | Summary: We investigated the temporal and spectral features of $gamma$ Cassiopeiae’s X-ray emission within the context of the white dwarf accretion hypothesis. We find that the variabilities present in the X-ray […]


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Logical computation demonstrated with a neutral atom quantum processor

Kavli Affiliate: Michael McDonald | First 5 Authors: Ben W. Reichardt, Adam Paetznick, David Aasen, Ivan Basov, Juan M. Bello-Rivas | Summary: Transitioning from quantum computation on physical qubits to quantum computation on encoded, logical qubits can improve the error rate of operations, and will be essential for realizing valuable quantum computational advantages. Using a […]


Continue.. Logical computation demonstrated with a neutral atom quantum processor