Possible stratospheric emission in the warm Neptune GJ 436 b from high-resolution spectroscopy

Kavli Affiliate: Dimitri Mawet| Summary:We present high spectral resolution $L$ band (2.91–3.85 $μ$m) observations of the warm Neptune GJ 436 b from Keck II/KPIC. KPIC’s single-mode fiber feed reduces the $L$ band sky background by a factor of 100, significantly improving sensitivity compared to a seeing-limited spectrometer and enabling a tentative ($rm SNR = 3-4$) […]


Continue.. Possible stratospheric emission in the warm Neptune GJ 436 b from high-resolution spectroscopy

Identifying Exoplanets with Deep Learning VI. Enhancing neural network mitigation of stellar activity RV signals with additional metrics

Kavli Affiliate: Andrew Vanderburg | Summary:The measurement of exoplanet masses using the radial velocity (RV) technique is currently limited by stellar activity, which introduces quasiperiodic variability signals that must be modeled and removed to enhance the sensitivity of the RV measurements to exoplanet signals. Neural networks have previously been demonstrated effective in modeling stellar activity […]


Continue.. Identifying Exoplanets with Deep Learning VI. Enhancing neural network mitigation of stellar activity RV signals with additional metrics

A Chemodynamical Census of the Milky Way’s Ultra-Faint Compact Satellites. I. A First Population-Level Look at the Internal Kinematics and Metallicities of 19 Extremely-Low-Mass Halo Stellar Systems

Kavli Affiliate: Alexander Ji | Summary:Deep, wide-area photometric surveys have uncovered a population of compact ($r_1/2 approx$ 1-15 pc), extremely-low-mass ($M_* approx$ 20-4000 $M_odot$) stellar systems in the Milky Way halo that are smaller in size than known ultra-faint dwarf galaxies (UFDs) and substantially fainter than most classical globular clusters (GCs). Very little is known […]


Continue.. A Chemodynamical Census of the Milky Way’s Ultra-Faint Compact Satellites. I. A First Population-Level Look at the Internal Kinematics and Metallicities of 19 Extremely-Low-Mass Halo Stellar Systems

Impact of Data Quality on Deep Learning Prediction of Spatial Transcriptomics from Histology Images

Kavli Affiliate: Jean Fan | Authors: Caleb Hallinan, Calixto-Hope G Lucas, Jr. and Jean Fan | Summary: Abstract Spatial transcriptomics technologies enable high-throughput quantification of gene expression at specific locations across tissue sections, facilitating insights into the spatial organization of biological processes. However, high costs associated with these technologies have motivated the development of deep […]


Continue.. Impact of Data Quality on Deep Learning Prediction of Spatial Transcriptomics from Histology Images

Building an AI-native Research Ecosystem for Experimental Particle Physics: A Community Vision

Kavli Affiliate: David W. Miller | Summary:Experimental particle physics seeks to understand the universe by probing its fundamental particles and forces and exploring how they govern the large-scale processes that shape cosmic evolution. This whitepaper presents a vision for how Artificial Intelligence (AI) can accelerate discovery in this field. We outline grand challenges that must […]


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Cryogenic piezoelectric effects in thin film strontium titanate devices

Kavli Affiliate: Oskar Painter | Summary:Next generation quantum technologies will need to rely on efficient transduction between electrical, optical, and mechanical quantum degrees of freedom to generate large-scale entanglement over large distances. The performance of such transducers is fundamentally limited by the cryogenic properties of the underlying materials. Here, we demonstrate that engineering strain in […]


Continue.. Cryogenic piezoelectric effects in thin film strontium titanate devices

Cryogenic piezoelectric effects in thin film strontium titanate devices

Kavli Affiliate: Oskar Painter | Summary:Next generation quantum technologies will need to rely on efficient transduction between electrical, optical, and mechanical quantum degrees of freedom to generate large-scale entanglement over large distances. The performance of such transducers is fundamentally limited by the cryogenic properties of the underlying materials. Here, we demonstrate that engineering strain in […]


Continue.. Cryogenic piezoelectric effects in thin film strontium titanate devices

Under Pressure: UV Emission Line Ratios as Barometers of AGN Feedback Mechanisms

Kavli Affiliate: Hsiaowen Chen |Summary:Feedback from active galactic nuclei (AGN) is widely acknowledged to regulate the growth of massive galaxies, though its driving mechanisms are debated. Prevailing theories suggest that AGN-driven outflows are driven either by radiation pressure acting directly on the dusty interstellar medium (ISM) or by hot winds entraining cooler ISM gas, but […]


Continue.. Under Pressure: UV Emission Line Ratios as Barometers of AGN Feedback Mechanisms

Integrated Photonic Polarization Synthesizer and Analyzer

Kavli Affiliate: David W. Miller | Summary:Polarization-resolved control and measurement of the optical field are essential for a wide range of photonic systems, including coherent communication, polarimetric sensing, and quantum information processing. We present a photonic integrated circuit that enables the generation and analysis of arbitrary polarization states. The device provides reconfigurable access to the […]


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