July 2026 – Page 2 – Kavli Institute Pre-Print Publications

On-sky results from REDWOODS, a platform at Lick/ShaneAO for testing second stage AO technologies

Posted by klaurent July 31, 2026August 10, 2026Stanford

Kavli Affiliate: Bruce Macintosh | Summary:REDWOODS is a new sub-testbed within the Shane Adaptive Optics (AO) system at Lick observatory, developed to test second stage AO wavefront sensing and control technologies, including a Self-Coherent Camera with optional broadband Wynne corrector, two different three-sided fully reflective highly broadband pyramid wavefront sensor modes, and multi-wavefront sensor single […]

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State-Dependent Organization of Microscale Functional Circuitry in Visual Cortex

Posted by dbos July 30, 2026August 10, 2026UCSF

Endothelial type I interferon signaling modulates the vascular response to ischemic brain injury Kavli Affiliate: Reza Abbasi Asl | Authors: Rahul Biswas, Hasika Wickrama Senevirathne, Yujing Wang, Jiang Zhang, Somabha Mukherjee and Reza Abbasi-Asl | Summary: How the cortex organizes directed functional interactions among individual neurons and how this microscale circuitry maps onto cell types […]

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Purification and characterization of recombinant Rtt109, a fungus-specific histone acetyltransferase, from Candida albicans

Posted by dbos July 30, 2026August 10, 2026UCSD / Salk

Kavli Affiliate: V. S. Ramachandran | Authors: Simran Sharma, Vijayan Ramachandran, Sneha Sudha Komath, Rohini Muthuswami and Samudrala Gourinath | Summary: Epigenetic regulation of chromatin dynamics via histone acetylation is one of several mechanisms by which eukaryotes regulate gene expression, DNA replication and repair, and maintain genome stability. This function is performed by histone […]

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Ab Initio Cosmological Simulations: From Inflation to Present-Day Structure Formation

Posted by klaurent July 30, 2026August 10, 2026Tokyo

Kavli Affiliate: Eiichiro Komatsu | Summary:The cosmic web preserves a record of the physics that shaped the universe in its earliest moments, the period of exponential expansion known as cosmic inflation. However, if inflation involves significant nonlinear interactions, there are no direct theoretical predictions for the resulting cosmic web. We present the first simulation of […]

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High Axial Resolution Is Necessary for Quantitative Two-Photon Calcium Imaging of Neuronal Populations

Posted by dbos July 30, 2026August 10, 2026Hopkins

Kavli Affiliate: Adam S. Charles | Authors: Ha Yun Anna Yoon, Umaima Afifa, Génesis Ferrer-Imbert, Adam S Charles and Na Ji | Summary: Two-photon calcium imaging is a standard tool for measuring neuronal population activity in vivo, yet how axial resolution, sensor expression strategy, and analysis pipeline jointly affect data accuracy remains poorly characterized. Here, […]

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Broad Paschen lines as black hole mass tracers: A reverberation mapping calibration

Posted by klaurent July 30, 2026Peking

Kavli Affiliate: Linhua Jiang | Summary:Single-epoch (SE) black hole mass estimators based on rest-frame ultraviolet or optical broad lines can be limited by dust attenuation or wavelength coverage. We calibrate estimators based on broad Paschen P$α$ and P$β$ directly against reverberation mapping (RM) masses. We obtained LBT/LUCI near-infrared spectra of 27 SDSS-RM quasars and combined […]

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Changing-Look AGNs from DESI. VI. Host Galaxies

Posted by klaurent July 30, 2026August 10, 2026Peking

Kavli Affiliate: Linhua Jiang | Summary:Changing-look (CL) AGNs trace rapid changes in nuclear activity, but their connection to host galaxy properties remains unclear. We present a study of the host galaxies of 105 CL AGNs previously selected by comparing DESI and SDSS data. We apply a two-epoch spectrophotometric decomposition to the DESI and SDSS spectra […]

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Quiescent Host Galaxies of Extended Quasars Revealed by Spectrophotometric Decomposition

Posted by klaurent July 30, 2026August 10, 2026Peking

Kavli Affiliate: Linhua Jiang | Summary:Previous works of low-redshift quasar host galaxies have focused on compact quasars and found that their host galaxies are mainly star-forming galaxies. Here we present a study of host galaxies for quasars with extended morphologies in ground-based optical images. We select a sample of more than 1000 type 1 quasars […]

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Misaligned or chaotic? A strong break of axial symmetry in the local LRD J1025 revealed with VLT/FORS2 spectropolarimetry

Posted by klaurent July 30, 2026August 10, 2026Cambridge

Kavli Affiliate: Roberto Maiolino | Summary:Little Red Dots (LRDs) are compact active galactic nuclei (AGN) with unusual spectral energy distributions and broad Balmer emission, candidate signposts of rapid black-hole growth. We present VLT/FORS2 optical linear spectropolarimetry of the closest known LRD, SDSS J102530.29+140207.3, at z=0.1. In total light, we detect spatially extended narrow-H$α$ emission, probably […]

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Atmospheric Signatures of Common Envelope Evolution in White Dwarf Planets

Posted by klaurent July 30, 2026August 10, 2026MIT

Kavli Affiliate: Andrew Vanderburg | Summary:The majority of confirmed exoplanets orbit within 1 au of a main-sequence (MS) star. When their stellar hosts evolve off the MS, many of these planets will be engulfed and destroyed, creating empty "forbidden" zones around the stars as they evolve to their final state as a white dwarf (WD). […]

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