15,259 papers

astro-ph.GA2026

Observational Signatures of Kerr Black Hole Lensing

Thomas P. Kling, Lia Troy, Shannon Harding +1

Gravitational lensing by rotating black holes is modeled, and the null geodesic equations in the strong field regime are integrated numerically. Observational signatures of the bla…

astro-ph.CO2026

A census of Dark Energy Survey Year 3 redMaPPer galaxy clusters in a high exposure eROSITA All Sky Survey region

P. A. Giles, A. K. Romer, J. Pilling +64

We present the cross-match of galaxy clusters detected by redMaPPer using the first three years of Dark Energy Survey (DESY3RM) operations, and the first release of the eROSITA-All…

astro-ph.EP2026

HD 715 b, a Warm Jupiter Orbiting a Massive Subgiant Discovered from a Single TESS Transit

Alexander Venner, Robert A. Wittenmyer, Andrew Vanderburg +23

Transiting Warm Jupiters orbiting bright stars are scarcely known, but a substantial number of these planets have been uncovered by the TESS mission. In this work we report the dis…

physics.ao-ph2026

AI Emulation of Stochastic Sudden Stratospheric Warming with Interpretable Latent Structure

C. Daniel Boscu, Daniel Hernandez, Fabio Alvarez Ventura +4

Rare weather regime transitions pose a challenge for data-driven modeling due to class imbalance. In this study, we develop a probabilistic deep learning emulator for a prototypica…

cond-mat.supr-con2026

The observation of bulk superconductivity in Rhombohedral ReO3 under pressure

S. Huyan, R. F. S. Penacchio, L-L. Wang +10

Understanding how lattice geometry enables superconductivity in oxides remains a central challenge. Here, we report a systematic study of ReO3 up to 80 GPa. Synchrotron X-ray diffr…

cond-mat.soft2026★ 18 cited

Investigating the Nature of Discontinuous Shear Thickening: Beyond a Mean-Field Description

Jetin E. Thomas, Abhay Goyal, Deshpreet Singh Bedi +3

Dense suspensions can undergo a dramatic increase in viscosity at a critical value of the shear stress. This phenomenon, termed discontinuous shear thickening (DST), has been attri…

astro-ph.EP2026

Atmospheric Reconnaissance of TRAPPIST-1 f with JWST NIRISS SOSS: No Evidence for the Transit Light Source Effect

Olivia Lim, René Doyon, Ryan J. MacDonald +25

In just over three years of operation, JWST has observed all seven planets of the TRAPPIST-1 system. The two innermost planets were found to have little to no atmosphere, barring t…

cs.CL2026

Beyond Surface Alignment: Grounding the Dynamics of Situational Understanding and Generative Control in LLMs

Chenghao Yang

The current alignment tuning paradigm for Large Language Models (LLMs) prioritizes surface-level behaviors -- fluency, safety, and tonal consistency. While effective for casual cha…

physics.ao-ph2026

Missing the Butterfly and Predicting the Past: Features or Bugs of Accurate AI Weather Models?

Pedram Hassanzadeh, Weidong Li, Y. Qiang Sun +4

AI weather prediction (AIWP) models rival physics-based models, yet the sources of their unexpected forecast accuracy and the degree of their physical fidelity remain unclear. Here…

astro-ph.EP2026

An Evolving Cosmic Shoreline and Sandbar Bounding the Rocky Airless Valley

Barron K. Nguyen, Laura K. Schaefer, Xuan Ji +7

Recent JWST observations challenge the traditional 'cosmic shoreline' from both sides, revealing thick volatile atmospheres on the hottest close-in 'lava worlds,' where irradiation…

astro-ph.EP2026

Accounting for Transit Timing Detectability: Biases in Planetary Radius and Orbital Period

Skylar D'Angiolillo, Daniel Fabrycky, Mariah G. MacDonald

Transit Timing Variations (TTVs) are deviations from the time an observer would expect to see an exoplanet transit its host star. In multi-planetary systems, significant TTVs may i…

astro-ph.GA2026

How can we finally see the first light? Status and perspective in the search for Population III stars

Alessandra Venditti, Daniel Schaerer, Erik Zackrisson +26

Finding the first (Population III or Pop III) stars is one of the fundamental quests of astronomy, aiming to deliver the missing link in how stars form at early cosmic times. Yet t…

cond-mat.mtrl-sci2026★ 34 cited

Over what length scale does an inorganic substrate perturb the structure of a glassy organic semiconductor?

Kushal Bagchi, Chuting Deng, Camille Bishop +6

While the bulk structure of vapor-deposited glasses has been extensively studied, structure at buried interfaces has received little attention, despite being important for organic…

cs.CR2026

Plaintext Recovery Against Post-Filtering Access Control

Zachary Espiritu, David Cash

Fine-grained access control (FGAC) mechanisms such as row-level security (RLS) and document-level security (DLS) are widely deployed in databases to restrict access to data stored…

astro-ph.IM2026

Early Exploration of the Scientific Discovery Space for the Habitable Worlds Observatory

Courtney D. Dressing, Danica Adams, Evelyne Alecian +324

The Habitable Worlds Observatory (HWO) is a future NASA flagship mission concept identified by the Astro2020 Decadal Survey as the highest priority for large space missions. HWO sh…

cs.CV2026

Motion Artifact-Aware Self-Supervised Representation Learning for 3D Brain MRI Motion Artifact Reduction

Mojtaba Safari, Shansong Wang, Zach Eidex +4

Patient motion remains a source of image degradation in brain MRI, leading to signal loss, blurring, and geometric distortion that compromise quantitative analysis. Existing deep l…

astro-ph.CO2026

Axion dark matter search with a photonic bandgap cavity haloscope and dielectric tuning rod over 10.25-10.45 GHz

Morgan Lynn, Ankur Agrawal, Arjun Ghosh +4

We report the development of a new widely tunable cavity and demonstrate its use in a search for dark matter axions. We achieve unloaded quality factors above , roughly $25…

astro-ph.HE2026

X-Ray Observation of Type II Supernova 2024ggi

Elisa J. Gao, Vikram V. Dwarkadas

We investigate the Chandra and XMM-Newton X-ray emission from the core-collapse SN 2024ggi. Spectral fitting is carried out using the vapec model. We find X-ray temperatures betwee…

astro-ph.IM2026

Design and Performance of 220 and 270 GHz Bandpass Filters for BICEP Array

A. Steiger, The BICEP/Keck Collaboration, P. A. R. Ade +90

The BICEP Array (BA) is the latest in the BICEP/ Keck series of experiments that aim to measure the polarization of the cosmic microwave background (CMB) with small aperture polari…

astro-ph.IM2026

An upgraded frequency-selectable laser source (FLS) calibrator for CMB bandpass characterization

Lauren J. Saunders, Sara M. Simon, Shreya Sutariya +4

One of the biggest challenges for Cosmic Microwave Background (CMB) experiments comes from the uncertainty in instrument bandpass calibration. Uncertainties in bandpass can limit f…

astro-ph.IM2026

The beamformed trigger of RNO-G: its design and in-field performance

G Collaboration, S. Agarwal, J. A. Aguilar +76

The Radio Neutrino Observatory in Greenland (RNO-G) is a neutrino detector under construction at Summit Station, with 8 out of a planned 35 stations currently deployed. We have des…

cs.HC2026★ 2 cited

Visualizing Patient Trajectories and Disorder Co-occurrences in Child and Adolescent Mental Health

Dipendra Pant, Kaban Koochakpour, Odd Sverre Westbye +6

Understanding patient trajectories and identifying patterns in episodes of care is critical for effective healthcare decision-making. We present a patient timeline visualization us…

astro-ph.EP2026

TOI-3664 b, TOI-4034 b & TOI-6564 b: Three new hot Jupiters around stars approaching the terminal age main sequence

Matthew P. Battley, Marina Lafarga, Edward Gillen +21

Studying the evolution of hot Jupiters requires a sample of well-characterised systems across all evolutionary states. We present three new gas giant exoplanets around stars approa…

astro-ph.EP2026★ 4 cited

Helium escaping from the atmosphere of a nearby rocky exoplanet orbiting in a habitable zone

Collin Cherubim, Shreyas Vissapragada, Tim Cunningham +13

Observations of highly irradiated gas giant exoplanets have shown helium escaping from their atmospheres. There is limited evidence for atmospheres on rocky exoplanets, perhaps bec…