Acceleration and Collimation of the Two-Sided Jets in the Nearby Low-luminosity Active Galactic Nucleus NGC 4261 (3C 270)

Kavli Affiliate: Luis C. Ho | First 5 Authors: Xi Yan, Lang Cui, Kazuhiro Hada, Sandor Frey, Ru-sen Lu | Summary: We study the acceleration and collimation of the two-sided jets in the nearby low-luminosity active galactic nucleus NGC 4261 (3C 270) using archival multifrequency, multi-epoch Very Long Baseline Array data. By applying multiple analysis […]


Continue.. Acceleration and Collimation of the Two-Sided Jets in the Nearby Low-luminosity Active Galactic Nucleus NGC 4261 (3C 270)

Laser ablated sub-wavelength structure anti-reflection coating on an alumina lens

Kavli Affiliate: Tomotake Matsumura | First 5 Authors: Shaul Hanany, Scott Cray, Samuel Dietterich, Jan Dusing, Calvin Firth | Summary: We used laser ablation to fabricate sub-wavelength structure anti-reflection coating (SWS-ARC) on a 5 cm diameter alumina lens. With an aspect ratio of 2.5, the SWS-ARC are designed to give a broad-band low reflectance response […]


Continue.. Laser ablated sub-wavelength structure anti-reflection coating on an alumina lens

Correcting impedance measurements for background parasitics to characterize circuit components in cryogenic environments

Kavli Affiliate: Noah A. Kurinsky | First 5 Authors: Riley J. Carpenter, Jadyn Anczarski, Ivar Rydstrom, Aviv Simchony, Zoe J. Smith | Summary: Predictable circuit response is a critical prerequisite for accurate electronic measurements. We describe a powerful, yet straightforward, experimental method and analysis model that utilizes an affordable LCR meter in conjunction with an […]


Continue.. Correcting impedance measurements for background parasitics to characterize circuit components in cryogenic environments

Hubble’s Multi-Year Search for Exospheres in the TRAPPIST-1 System Reveals Frequent Microflares

Kavli Affiliate: Sara Seager | First 5 Authors: David Berardo, Julien de Wit, Michael Gillon, Ward S. Howard, Vincent Bourrier | Summary: Ly-$alpha$ observations provide a powerful probe of stellar activity and atmospheric escape in exoplanetary systems. We present here an analysis of 104 HST/STIS orbits monitoring the TRAPPIST-1 system between 2017 and 2022, covering […]


Continue.. Hubble’s Multi-Year Search for Exospheres in the TRAPPIST-1 System Reveals Frequent Microflares

Spot-Crossing Variations Confirm a Misaligned Orbit for a Planet Transiting an M Dwarf

Kavli Affiliate: Avi Shporer | First 5 Authors: Patrick Tamburo, Samuel W. Yee, Juliana García-Mejía, David Charbonneau, Allyson Bieryla | Summary: TOI-3884~b is an unusual 6.4~R$_oplus$ planet orbiting an M4 host, whose transits display large and persistent spot-crossing events. We used the textit{Tierras} Observatory to monitor both the long-term photometric variability of TOI-3884 and changes […]


Continue.. Spot-Crossing Variations Confirm a Misaligned Orbit for a Planet Transiting an M Dwarf

Fusion of multi-source precipitation records via coordinate-based generative model

Kavli Affiliate: Li Xin Li | First 5 Authors: Sencan Sun, Congyi Nai, Baoxiang Pan, Wentao Li, Xin Li | Summary: Precipitation remains one of the most challenging climate variables to observe and predict accurately. Existing datasets face intricate trade-offs: gauge observations are relatively trustworthy but sparse, satellites provide global coverage with retrieval uncertainties, and […]


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The Diversity of Exoplanetary Environments and the Search for Signs of Life Beyond Earth

Kavli Affiliate: Sara Seager | First 5 Authors: Sara Seager, Janusz J. Petkowski, William Bains, , | Summary: Thousands of exoplanets orbit nearby stars, showcasing a remarkable diversity in mass, size, and orbits. With the James Webb Space Telescope now operational, we are observing exoplanet atmospheres and aiming to reach down to small, habitable-zone exoplanets […]


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Discovery of an HI 21 cm absorption system at z=2.327 with CHIME

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: CHIME Collaboration, Mandana Amiri, Arnab Chakraborty, Simon Foreman, Mark Halpern | Summary: We report the detection of a new HI absorption system associated with the radio source NVSS J164725+375218 at a redshift of z=2.327, identified through a blind survey conducted by the Canadian Hydrogen Intensity Mapping […]


Continue.. Discovery of an HI 21 cm absorption system at z=2.327 with CHIME

FerroAI: A Deep Learning Model for Predicting Phase Diagrams of Ferroelectric Materials

Kavli Affiliate: Xian Chen | First 5 Authors: Chenbo Zhang, Xian Chen, , , | Summary: Composition-temperature phase diagrams are crucial for designing ferroelectric materials, however predicting them accurately remains challenging due to limited phase transformation data and the constraints of conventional methods. Here, we utilize natural language processing (NLP) to text-mine 41,597 research articles, […]


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Discovery and Localization of the Swift-Observed FRB 20241228A in a Star-forming Host Galaxy

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Alice P. Curtin, Shion Andrew, Sunil Simha, Alice Cai, Kenzie Nimmo | Summary: On 2024 December 28, CHIME/FRB detected the thus-far non-repeating FRB 20241228A with a real-time signal-to-noise ratio of $>50$. Approximately 112~s later, the X-ray Telescope onboard the Neil Gehrels Swift Observatory was on source, […]


Continue.. Discovery and Localization of the Swift-Observed FRB 20241228A in a Star-forming Host Galaxy