A dense mini-Neptune orbiting the bright young star HD 18599

Kavli Affiliate: Avi Shporer | First 5 Authors: Jose I. Vines, James S. Jenkins, Zaira Berdiñas, Maritza G. Soto, Matías R. Díaz | Summary: Very little is known about the young planet population because the detection of small planets orbiting young stars is obscured by the effects of stellar activity and fast rotation which mask […]


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The XRISM Pipeline Software System: Connecting Continents, Processes, Testing, and Scientists

Kavli Affiliate: Eric D. Miller | First 5 Authors: Trisha F. Doyle, Matthew P. Holland, Robert S. Hill, Tahir Yaqoob, Mike Loewenstein | Summary: XRISM (X-Ray Imaging and Spectroscopy Mission), with the Resolve high-resolution spectrometer and the Xtend wide-field imager on-board, is designed to build on the successes of the abbreviated Hitomi mission to address […]


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Spectral Evolution of Ultraluminous X-ray Pulsar NGC 300 ULX-1

Kavli Affiliate: Deepto Chakrabarty | First 5 Authors: Mason Ng, Ronald A. Remillard, James F. Steiner, Deepto Chakrabarty, Dheeraj R. Pasham | Summary: We report on results from a one-year soft X-ray observing campaign of the ultraluminous X-ray pulsar NGC 300 ULX-1 by the Neutron star Interior Composition Explorer (NICER) during 2018–2019. Our analysis also […]


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What does an interferometer really measure? Including instrument and data characteristics in the reconstruction of the 21cm power spectrum

Kavli Affiliate: Jacqueline N. Hewitt | First 5 Authors: Adélie Gorce, Samskruthi Ganjam, Adrian Liu, Steven G. Murray, Zara Abdurashidova | Summary: Combining the visibilities measured by an interferometer to form a cosmological power spectrum is a complicated process in which the window functions play a crucial role. In a delay-based analysis, the mapping between […]


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Observations of 4U 1626-67 with the Imaging X-ray Polarimetry Explorer

Kavli Affiliate: Norbert S. Schulz | First 5 Authors: Herman L. Marshall, Mason Ng, Daniele Rogantini, Jeremy Heyl, Sergey S. Tsygankov | Summary: We present measurements of the polarization of X-rays in the 2-8 keV band from the pulsar in the ultracompact low mass X-ray binary 4U1626-67 using data from the Imaging X-ray Polarimetry Explorer […]


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Fractional Statistics

Kavli Affiliate: Frank Wilczek | First 5 Authors: Martin Greiter, Frank Wilczek, , , | Summary: The quantum-mechanical description of assemblies of particles whose motion is confined to two (or one) spatial dimensions offers many possibilities that are distinct from bosons and fermions. We call such particles anyons. The simplest anyons are parameterized by an […]


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A dense $mathbf{0.1 M_{rm odot}}$ star in a 51-minute orbital period eclipsing binary

Kavli Affiliate: Erin Kara | First 5 Authors: Kevin B. Burdge, Kareem El-Badry, Thomas R. Marsh, Saul Rappaport, Warren R. Brown | Summary: In over a thousand known cataclysmic variables (CVs), where a white dwarf is accreting from a hydrogen-rich star, only a dozen have orbital periods below 75 minutes. One way to achieve these […]


Continue.. A dense $mathbf{0.1 M_{rm odot}}$ star in a 51-minute orbital period eclipsing binary

A dense $mathbf{0.1 M_{rm odot}}$ star in a 51-minute orbital period eclipsing binary

Kavli Affiliate: Saul Rappaport | First 5 Authors: Kevin B. Burdge, Kareem El-Badry, Thomas R. Marsh, Saul Rappaport, Warren R. Brown | Summary: In over a thousand known cataclysmic variables (CVs), where a white dwarf is accreting from a hydrogen-rich star, only a dozen have orbital periods below 75 minutes. One way to achieve these […]


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Omnigrok: Grokking Beyond Algorithmic Data

Kavli Affiliate: Max Tegmark | First 5 Authors: Ziming Liu, Eric J. Michaud, Max Tegmark, , | Summary: Grokking, the unusual phenomenon for algorithmic datasets where generalization happens long after overfitting the training data, has remained elusive. We aim to understand grokking by analyzing the loss landscapes of neural networks, identifying the mismatch between training […]


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Gas Morphology of Milky Way-like Galaxies in the TNG50 Simulation: Signals of Twisting and Stretching

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Thomas K. Waters, Colton Peterson, Razieh Emami, Xuejian Shen, Lars Hernquist | Summary: We present an in-depth analysis of gas morphologies for a sample of 25 Milky Way-like galaxies from the IllustrisTNG TNG50 simulation. We constrain the morphology of cold, warm, hot gas, and gas particles as […]


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