Identification and photometric classification of extragalactic transients in the Vera C. Rubin Observatory’s Data Preview 1

Kavli Affiliate: Steven Kahn | Summary:The Vera C. Rubin Observatory will soon survey the southern sky, delivering a depth and sky coverage that is unprecedented in time domain astronomy. As part of commissioning, Data Preview 1 (DP1) has been released. It comprises a LSSTComCam observing campaign between November and December 2024 with multi-band imaging of […]


Continue.. Identification and photometric classification of extragalactic transients in the Vera C. Rubin Observatory’s Data Preview 1

Enabling Early Transient Discovery in LSST via Difference Imaging with DECam

Kavli Affiliate: Steven M. Kahn | First 5 Authors: Yize Dong, Yize Dong, , , | Summary: We present SLIDE, a pipeline that enables transient discovery in data from the Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST), using archival images from the Dark Energy Camera (DECam) as templates for difference imaging. […]


Continue.. Enabling Early Transient Discovery in LSST via Difference Imaging with DECam

Enabling Early Transient Discovery in LSST via Difference Imaging with DECam

Kavli Affiliate: Steven Kahn | Summary:We present SLIDE, a pipeline that enables transient discovery in data from the Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST), using archival images from the Dark Energy Camera (DECam) as templates for difference imaging. We apply this pipeline to the recently released Data Preview 1 (DP1; […]


Continue.. Enabling Early Transient Discovery in LSST via Difference Imaging with DECam

Observation of Rayleigh optical activity for chiral molecules: a new chiroptical tool

Kavli Affiliate: Robert Cameron | Summary:By measuring a small circularly polarized component in the scattered light, we report the first observation of Rayleigh optical activity (RayOA) for isotropic samples of chiral molecules, namely the two enantiomers of $α$-pinene in neat liquid form. Our work validates fundamental theoretical predictions made over fifty years ago and expands […]


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First Temperature Profile of a Stellar Flare using Differential Chromatic Refraction

Kavli Affiliate: Aaron Roodman | Summary:We present the first derivation of a stellar flare temperature profile from single-band photometry. Stellar flare DWF030225.574-545707.45129 was detected in 2015 by the Dark Energy Camera as part of the Deeper, Wider, Faster Programme. The brightness ($Δm_g = -6.12$) of this flare, combined with the high air mass ($1.45 lesssim […]


Continue.. First Temperature Profile of a Stellar Flare using Differential Chromatic Refraction

Silicate clouds and a circumplanetary disk in the YSES-1 exoplanet system

Kavli Affiliate: Bruce Macintosh | Summary:Young exoplanets provide a critical link between understanding planet formation and atmospheric evolution. Direct imaging spectroscopy allows us to infer the properties of young, wide orbit, giant planets with high signal-to-noise. This allows us to compare this young population to exoplanets characterized with transmission spectroscopy, which has indirectly revealed the […]


Continue.. Silicate clouds and a circumplanetary disk in the YSES-1 exoplanet system

Human-AI Collaboration and Explainability for 2D/3D Registration Quality Assurance

Kavli Affiliate: Hsiao-Mei (Sherry) Cho| First 5 Authors: [#item_custom_name[1, [#item_custom_name[2, [#item_custom_name[3, [#item_custom_name[4, [#item_custom_name[5| Summary:Purpose: As surgery increasingly integrates advanced imaging, algorithms, and robotics to automate complex tasks, human judgment of system correctness remains a vital safeguard for patient safety. A critical example is 2D/3D registration, where small registration misalignments can lead to surgical errors. Current […]


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Variable X-ray reverberation in the rapidly accreting AGN Ark 564: the response of the soft excess to the changing geometry of the inner accretion flow

Kavli Affiliate: Steven W. Allen | First 5 Authors: Zhefu Yu, Zhefu Yu, , , | Summary: X-ray reverberation, which exploits the time delays between variability in different energy bands as a function of Fourier frequency, probes the structure of the inner accretion disks and X-ray coronae of active galactic nuclei. We present a systematic […]


Continue.. Variable X-ray reverberation in the rapidly accreting AGN Ark 564: the response of the soft excess to the changing geometry of the inner accretion flow

Comparative validation of surgical phase recognition, instrument keypoint estimation, and instrument instance segmentation in endoscopy: Results of the PhaKIR 2024 challenge

Kavli Affiliate: Hsiao-Mei (Sherry) Cho| First 5 Authors: [#item_custom_name[1, [#item_custom_name[2, [#item_custom_name[3, [#item_custom_name[4, [#item_custom_name[5| Summary:Reliable recognition and localization of surgical instruments in endoscopic video recordings are foundational for a wide range of applications in computer- and robot-assisted minimally invasive surgery (RAMIS), including surgical training, skill assessment, and autonomous assistance. However, robust performance under real-world conditions remains […]


Continue.. Comparative validation of surgical phase recognition, instrument keypoint estimation, and instrument instance segmentation in endoscopy: Results of the PhaKIR 2024 challenge

Procedure Learning via Regularized Gromov-Wasserstein Optimal Transport

Kavli Affiliate: Zeeshan Ahmed| First 5 Authors: Syed Ahmed Mahmood, Syed Ahmed Mahmood, , , | Summary:We study self-supervised procedure learning, which discovers key steps and their order from a set of unlabeled videos. Previous methods typically learn frame-to-frame correspondences between videos before determining key steps and their order. However, their performance often suffers from […]


Continue.. Procedure Learning via Regularized Gromov-Wasserstein Optimal Transport