Dwarf galaxy halo masses from spectroscopic and photometric lensing in DESI and DES

Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Helena Treiber, Helena Treiber, , , | Summary: We present the most precise and lowest-mass weak lensing measurements of dwarf galaxies to date, enabled by spectroscopic lenses from the Dark Energy Spectroscopic Instrument (DESI) and photometric lenses from the Dark Energy Survey (DES) calibrated with DESI […]


Continue.. Dwarf galaxy halo masses from spectroscopic and photometric lensing in DESI and DES

Oscillating Heat Transfer Prediction in Porous Structures Using Generative AI-Assisted Explainable Machine Learning

Kavli Affiliate: Laura Schaefer | First 5 Authors: Lichang Zhu, Lichang Zhu, , , | Summary: Predicting and interpreting thermal performance under oscillating flow in porous structures remains a critical challenge due to the complex coupling between fluid dynamics and geometric features. This study introduces a data-driven wGAN-LBM-Nested_CV framework that integrates generative deep learning, numerical […]


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Progress toward a demonstration of high contrast imaging at ultraviolet wavelengths

Kavli Affiliate: Bruce Macintosh | First 5 Authors: Kyle Van Gorkom, Kyle Van Gorkom, , , | Summary: NASA’s Habitable Worlds Observatory (HWO) aims to achieve starlight suppression to the $10^-10$ level for the detection and spectral characterization of Earth-like exoplanets. Broadband ozone absorption features are key biosignatures that appear in the 200-400nm near-ultraviolet (UV) […]


Continue.. Progress toward a demonstration of high contrast imaging at ultraviolet wavelengths

Detection of Millimeter-Wavelength Flares from Two Accreting White Dwarf Systems in the SPT-3G Galactic Plane Survey

Kavli Affiliate: Chao-Lin Kuo | First 5 Authors: Y. Wan, Y. Wan, , , | Summary: Blind discoveries of millimeter-wave (mm-wave) transient events in non-targeted surveys, as opposed to follow-up or pointed observations, have only become possible in the past decade using cosmic microwave background surveys. Here we present the first results from the SPT-3G […]


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Release and Recapture of Silica Nanoparticles from an Optical Trap in Weightlessness

Kavli Affiliate: Sven Herrmann | First 5 Authors: Govindarajan Prakash, Govindarajan Prakash, , , | Summary: Optically trapped Silica nanoparticles are a promising tool for precise sensing of gravitational or inertial forces and fundamental physics, including tests of quantum mechanics at ‘large’ mass scales. This field, called levitated optomechanics can greatly benefit from an application […]


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Ground-Based Mid-IR Direct Imaging: The Origin of the Thermal Background on the Keck II Telescope and Correcting Instrumental Systematics

Kavli Affiliate: Bruce Macintosh | First 5 Authors: Jayke S. Nguyen, Jayke S. Nguyen, , , | Summary: Mid-IR wavelengths are of particular interest to exoplanet science due to the fact they can extend the searchable parameter space to planets that are older and/or colder. However, a significant source of uncertainty at mid-IR wavelengths on […]


Continue.. Ground-Based Mid-IR Direct Imaging: The Origin of the Thermal Background on the Keck II Telescope and Correcting Instrumental Systematics

Advanced Weights for IXPE Polarization Analysis

Kavli Affiliate: Roger W. Romani | First 5 Authors: Jack T. Dinsmore, Jack T. Dinsmore, , , | Summary: As the Imaging X-ray Polarimetry Explorer (IXPE) measures increasingly faint sources, the need for precise polarimetry extraction becomes paramount. In addition to previously described neural-net (NN) weights, we introduce here point-spread function weights and particle background […]


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Advanced Weights for IXPE Polarization Analysis

Kavli Affiliate: Roger W. Romani | First 5 Authors: Jack T. Dinsmore, Jack T. Dinsmore, , , | Summary: As the Imaging X-ray Polarimetry Explorer (IXPE) measures increasingly faint sources, the need for precise polarimetry extraction becomes paramount. In addition to previously described neural-net (NN) weights, we introduce here point-spread function weights and particle background […]


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HD 143811 AB b: A Directly Imaged Planet Orbiting a Spectroscopic Binary in Sco-Cen

Kavli Affiliate: Bruce A. Macintosh | First 5 Authors: Nathalie K. Jones, Nathalie K. Jones, , , | Summary: We present confirmation of HD 143811 AB b, a substellar companion to spectroscopic binary HD 143811 AB through direct imaging with the Gemini Planet Imager (GPI) and Keck NIRC2. HD 143811 AB was observed as a […]


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Characterization of the Host Binary of the Directly Imaged Exoplanet HD 143811 AB b

Kavli Affiliate: Bruce Macintosh | First 5 Authors: Anne E. Peck, Anne E. Peck, , , | Summary: HD~143811~AB is the host star to the directly imaged planet HD~143811~AB~b, which was recently discovered using data from the Gemini Planet Imager and Keck NIRC2. A member of the Sco-Cen star-forming region with an age of $13 […]


Continue.. Characterization of the Host Binary of the Directly Imaged Exoplanet HD 143811 AB b