The Pan-Pacific Planet Search — IX. A menagerie of companions orbiting evolved stars

Posted by klaurent MIT

Kavli Affiliate: Avi Shporer | Summary:We present resolutions as to the nature of six speculative candidate companions proposed in the final data release of the Pan-Pacific Planet Search, a 6-year radial-velocity survey of 164 southern evolved stars using the now-decommissioned UCLES spectrograph on the 3.9m Anglo-Australian Telescope. New radial-velocity observations, TESS asteroseismology, and Hipparcos-Gaia astrometry […]


Continue.. The Pan-Pacific Planet Search — IX. A menagerie of companions orbiting evolved stars

Large-scale volumetric two-photon calcium imaging enables cellular-resolution mesoscopic mapping of marmoset cortical areas

Posted by dbos Rockefeller

Kavli Affiliate: Winrich Freiwald and Alipasha Vaziri | Authors: Santiago Otero-Coronel, David Grant Colburn Hildebrand, Tobias Noebauer, Jeffrey Demas, Brandon Chen, Siegfried Weisenburger, Frank Tejera, Sverre Grodem, Kristian Kinden Lensjo, Guro Helen Vatne, Marianne Fyhn, Winrich A Freiwald and Alipasha Vaziri | Summary: Primate neocortex is organized into functionally defined domains. Understanding how the functional […]


Continue.. Large-scale volumetric two-photon calcium imaging enables cellular-resolution mesoscopic mapping of marmoset cortical areas

Deconvolution improves cryo-EM maps

Posted by dbos UCSF

Kavli Affiliate: Yifan Cheng | Authors: Junrui Li, Wooyoung Choi, Yifei chen, Shawn Zheng, Angus McDonald, John W. Sedat, David A. Agard and Yifan Cheng | Summary: With technological advancements in recent years, single particle cryogenic electron microscopy (cryo-EM) has become a major methodology for structural biology. Structure determination by single particle cryo-EM is premised […]


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What controls the superconducting dome of electron-doped FeSe?

Posted by klaurent Cornell

Kavli Affiliate: Darrell Schlom | Summary:Superconducting domes are conspicuous features of the phase diagrams of most unconventional and high-temperature superconductors. The superconducting transition temperature ($T_c$) of FeSe can be dramatically enhanced with electron doping, but unlike all other high-temperature and unconventional superconductors, its full phase diagram and superconducting dome have yet to be fully explored. […]


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Defect-engineered scaling of lead-free ferroelectrics with ultralow-voltage switching

Posted by klaurent Cornell

Kavli Affiliate: David Muller | Summary:Scaling ferroelectrics to nanometer thicknesses remains a central challenge for low-power, nonvolatile electronics, as leakage currents increasingly dominate with reduced dimensions. Alkali-based, lead-free ferroelectrics offer an environmentally sustainable alternative to lead-based systems, yet their scaling is severely limited by leakage arising from volatile alkali constituents. Here, we show that this […]


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A Consistent Implementation of Cluster Strong Lensing in Cosmological Simulation Light Cones

Posted by klaurent MIT

Kavli Affiliate: Michael McDonald | Summary:Galaxy cluster strong gravitational lensing plays a central role in precision cosmology, yet robust theoretical predictions have lagged behind an abundance of high-quality strong lensing observations. This shortfall reflects both a mismatch between the geometry of the strong-lensing problem and standard cubic simulation boxes, and the fundamental tension between simulation […]


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Isolation and Characterization of Extracellular Vesicles from Mouse Retina Tissue

Posted by dbos Hopkins

Kavli Affiliate: John Reynolds | Authors: Ishrat Ahmed, Olesia Gololobova, Mohammed Amanullah, Zach Troyer, Joshua H Yu, James T Handa, Jiang Qian, Seth Blackshaw and Kenneth Witwer | Summary: This protocol provides a standardized workflow for the isolation of extracellular vesicles (EVs) from mouse retinal tissue, and includes an assessment of EV size and concentration, […]


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Visuomotor flexibility is embedded in the topography of frontal cortex

Posted by dbos UCSD / Salk

Kavli Affiliate: John Reynolds | Authors: Nicholas M Dotson and John H Reynolds | Summary: Visual selection and saccade targeting are not obligatorily coupled, allowing a stimulus at one location to guide an eye movement toward another. This is mediated by frontal oculomotor cortex, where maps of visual and motor space converge, yet whether the […]


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Distinct senescent β-cell senotypes differentially drive islet aging and dysfunction

Posted by dbos Hopkins

Kavli Affiliate: Denis Wirtz | Authors: Kanako Iwasaki, Hui Pan, Jonathan M. Dreyfuss, Maya Jackson, Sergii Domanskyi, Dylan Baker, Priscila Carapeto, Christopher Cahill, Sandra Le, Francesko Hela, Juliana Alcoforado Diniz, Giray Naim Eryilmaz, Fan Wu, Pei-Hsun Wu, Bofei Yu, Denis Wirtz, Sara Espinoza, Alejandro Pena, Francisco G. Cigarroa, Gregory Abrahamian, Jillian L Woodworth, Peter D. […]


Continue.. Distinct senescent β-cell senotypes differentially drive islet aging and dysfunction

Efficient computation of the galaxy angular bispectrum in redshift space

Posted by klaurent Cambridge

Kavli Affiliate: Anthony Challinor | Summary:Efficient computation of the angular bispectrum is an essential part of modelling large-scale structure observations, but it still remains an extremely challenging task. In this work, we compute the tree-level, unequal-time angular bispectrum in both real and redshift space. By deriving full-sky results, we show that the bispectrum can be […]


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