On “Inconsistencies of metalens performance and comparison with conventional diffractive optics”

Kavli Affiliate: Andrei Faraon | First 5 Authors: Amir Arbabi, Andrei Faraon, , , | Summary: It was recently claimed1 that reported focusing efficiency values of high numerical aperture metalenses are inconsistent with a theoretical bound, and their measurement results are incorrectly interpreted. We review the article and conclude that these claims are not well […]


Continue.. On “Inconsistencies of metalens performance and comparison with conventional diffractive optics”

Spectrum Sharing using Deep Reinforcement Learning in Vehicular Networks

Kavli Affiliate: Zeeshan Ahmed | First 5 Authors: Riya Dinesh Deshpande, Faheem A. Khan, Qasim Zeeshan Ahmed, , | Summary: As the number of devices getting connected to the vehicular network grows exponentially, addressing the numerous challenges of effectively allocating spectrum in dynamic vehicular environment becomes increasingly difficult. Traditional methods may not suffice to tackle […]


Continue.. Spectrum Sharing using Deep Reinforcement Learning in Vehicular Networks

Dynamical time and Ashtekar variables for the Husain-Kuchař model

Kavli Affiliate: J. S. Villasenor | First 5 Authors: J. Fernando Barbero G., Juan Margalef-Bentabol, Aitor Vicente-Cano, Eduardo J. S. Villaseñor, | Summary: The relation between the Husain-Kuchav{r} model and some extensions thereof that incorporate a dynamical time variable is explored. To this end, we rely on the geometric approach to the Hamiltonian dynamics of […]


Continue.. Dynamical time and Ashtekar variables for the Husain-Kuchař model

Dynamical time and Ashtekar variables for the Husain-Kuchař model

Kavli Affiliate: J. S. Villasenor | First 5 Authors: J. Fernando Barbero G., Juan Margalef-Bentabol, Aitor Vicente-Cano, Eduardo J. S. Villaseñor, | Summary: The relation between the Husain-Kuchav{r} model and some extensions thereof that incorporate a dynamical time variable is explored. To this end, we rely on the geometric approach to the Hamiltonian dynamics of […]


Continue.. Dynamical time and Ashtekar variables for the Husain-Kuchař model

The Milky Way atlas for linear filaments II. clump rotation versus filament orientation

Kavli Affiliate: Ke Wang | First 5 Authors: Xuefang Xu, Ke Wang, Qian Gou, Tapas Baug, Di Li | Summary: Dense clumps distributed along filaments are the immediate medium for star formation. Kinematic properties of the clumps, such as velocity gradient and angular momentum, combined with filament orientation, provide important clues to the formation mechanism […]


Continue.. The Milky Way atlas for linear filaments II. clump rotation versus filament orientation

K-Contact Distance for Noisy Nonhomogeneous Spatial Point Data with application to Repeating Fast Radio Burst sources

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: A. M. Cook, Dayi Li, Gwendolyn M. Eadie, David C. Stenning, Paul Scholz | Summary: This paper introduces an approach to analyze nonhomogeneous Poisson processes (NHPP) observed with noise, focusing on previously unstudied second-order characteristics of the noisy process. Utilizing a hierarchical Bayesian model with noisy […]


Continue.. K-Contact Distance for Noisy Nonhomogeneous Spatial Point Data with application to Repeating Fast Radio Burst sources

Revealing EMRI/IMRI candidates with quasiperiodic ultrafast outflows

Kavli Affiliate: Dheeraj R. Pasham | First 5 Authors: Michal Zajaček, Petra Suková, Vladimír Karas, Dheeraj R. Pasham, Francesco Tombesi | Summary: The first detection of the quasiperiodic ultrafast outflow in the ASASSN-20qc system was reported by Pasham et al. (2024). The outflow is revealed in the soft X-ray spectra as an absorption feature, which […]


Continue.. Revealing EMRI/IMRI candidates with quasiperiodic ultrafast outflows

The STROBE-X Wide Field Monitor Instrument

Kavli Affiliate: Ronald A. Remillard | First 5 Authors: Ronald A. Remillard, Margarita Hernanz, Jean in ‘t Zand, Paul S. Ray, Valter Bonvicini | Summary: The Wide Field Monitor (WFM) is one of the three instruments on the Spectroscopic Time-Resolving Observatory for Broadband Energy X-rays (STROBE-X) mission, which was proposed in response to the NASA […]


Continue.. The STROBE-X Wide Field Monitor Instrument

TESS Hunt for Young and Maturing Exoplanets (THYME) XII: A Young Mini-Neptune on the Upper Edge of the Radius Valley in the Hyades Cluster

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: Adam Distler, Melinda Soares-Furtado, Andrew Vanderburg, Jack Schulte, Juliette Becker | Summary: We present the discovery and characterization of TOI-4364,b, a young mini-Neptune in the tidal tails of the Hyades cluster, identified through TESS transit observations and ground-based follow-up photometry. The planet orbits a bright M dwarf […]


Continue.. TESS Hunt for Young and Maturing Exoplanets (THYME) XII: A Young Mini-Neptune on the Upper Edge of the Radius Valley in the Hyades Cluster

TESS Hunt for Young and Maturing Exoplanets (THYME) XII: A Young Mini-Neptune on the Upper Edge of the Radius Valley in the Hyades Cluster

Kavli Affiliate: Sara Seager | First 5 Authors: Adam Distler, Melinda Soares-Furtado, Andrew Vanderburg, Jack Schulte, Juliette Becker | Summary: We present the discovery and characterization of TOI-4364,b, a young mini-Neptune in the tidal tails of the Hyades cluster, identified through TESS transit observations and ground-based follow-up photometry. The planet orbits a bright M dwarf […]


Continue.. TESS Hunt for Young and Maturing Exoplanets (THYME) XII: A Young Mini-Neptune on the Upper Edge of the Radius Valley in the Hyades Cluster