A Fully Photometric Approach to Type Ia Supernova Cosmology in the LSST Era: Host Galaxy Redshifts and Supernova Classification

Posted by klaurent Chicago

Kavli Affiliate: Richard Kessler | Summary:The upcoming Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST) is expected to discover nearly a million Type Ia supernovae (SNeIa), offering an unprecedented opportunity to constrain dark energy. The vast majority of these events will lack spectroscopic classification and redshifts, necessitating a fully photometric approach to […]


Continue.. A Fully Photometric Approach to Type Ia Supernova Cosmology in the LSST Era: Host Galaxy Redshifts and Supernova Classification

Rewritable Complementary Nanoelectronics Enabled by Electron-Beam Programmable Ambipolar Doping

Posted by klaurent Berkeley

Kavli Affiliate: Alex Zettl | Summary:The ability to reversibly and site-selectively tune ambipolar doping in a single semiconductor is crucial for reconfigurable electronics beyond silicon, but remains highly challenging. Here, we present a rewritable architecture based on electron-beam programmable field-effect transistors (FETs). Using WSe$_2$ as a model system, we demonstrate electron-beam-induced doping that enables reversible, […]


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A genetic screen in enteroendocrine cells reveals mechanisms that control protein sensing and GLP-1 release

Posted by dbos UCSF

Kavli Affiliate: Zachary Knight | Authors: Shenliang Yu, Yoochae Lee, Steven C Boggess, Nicole R Klein, Noam Teyssier, Martin Kampmann and Zachary A Knight | Summary: Enteroendocrine cells (EECs) are the principal nutrient sensors in the gastrointestinal (GI) tract and release hormones such as glucagon-like-peptide 1 (GLP-1) that modulate GI function and appetite. While some […]


Continue.. A genetic screen in enteroendocrine cells reveals mechanisms that control protein sensing and GLP-1 release

Single-Cell Dissection of Immunometabolic Rewiring in the Porcine Ileum during Salmonella Typhimurium Infection

Posted by dbos UCSD / Salk

Kavli Affiliate: Jose Ricardo Suarez | Authors: Jose Manuel Suarez-Cardenas, Tomas Montserrat-Ayuso, Monica Alfonso-Nunez, Anna Esteve-Codina, Raul Fernandez-Rodriguez, Antonio Romero-Guillen, Transito Garcia-Garcia, Cristina Arce, Amparo Martinez-Martinez, Juan Jose Garrido and Sara Zaldivar-Lopez | Summary: Salmonella Typhimurium is a major zoonotic pathogen, with pigs acting as important subclinical carriers. To explore the specific intestinal immune response […]


Continue.. Single-Cell Dissection of Immunometabolic Rewiring in the Porcine Ileum during Salmonella Typhimurium Infection

The THESAN project: Lyman-alpha intensity mapping of cosmic reionization

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | Summary:Line Intensity Mapping (LIM) has garnered attention as a powerful cosmological probe, with next-generation instruments such as SPHEREx preparing to map the evolution of large-scale structure during the Epoch of Reionization (EoR). Lyman-alpha emission in the EoR is strongly shaped by resonant absorption from neutral hydrogen in the diffuse intergalactic […]


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An Ancient Brown Dwarf Transiting a Metal-Poor Thick Disk Star

Posted by klaurent Harvard

Kavli Affiliate: David Charbonneau | Summary:We report the discovery of TOI-7019b, the first transiting brown dwarf (BD) known to orbit a star that is part of the Milky Way’s ancient thick disk, as defined chemically ([Fe/H] $= -0.79 pm 0.05$ dex, [$α$/Fe] $= +0.26 pm 0.05$ dex, [M/H] $= -0.59 pm 0.06$ dex) and kinematically […]


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Spin Polarization from Circularly Polarized Light Induced Charge Transfer

Posted by klaurent Berkeley

Kavli Affiliate: David T. Limmer | Summary:We show how a spin polarization can be generated through the photo-induced electron transfer of an achiral donor-acceptor complex following chiral light excitation. In particular, we illustrate the basic energetic and symmetry requirements for chirality induced spin selectivity where the chirality emerges from the electronic degrees of freedom following […]


Continue.. Spin Polarization from Circularly Polarized Light Induced Charge Transfer

Spin Polarization from Circularly Polarized Light Induced Charge Transfer

Posted by klaurent Berkeley

Kavli Affiliate: David T. Limmer | Summary:We show how a spin polarization can be generated through the photo-induced electron transfer of an achiral donor-acceptor complex following chiral light excitation. In particular, we illustrate the basic energetic and symmetry requirements for chirality induced spin selectivity where the chirality emerges from the electronic degrees of freedom following […]


Continue.. Spin Polarization from Circularly Polarized Light Induced Charge Transfer

Ruminations Upon the Modeling of X-ray Foregrounds, Backgrounds and Faint Sources

Posted by klaurent Stanford

Kavli Affiliate: Steven Allen | Summary:With the goal of extracting as much information as possible from Chandra and XMM-Newton observations of faint, diffuse sources such as galaxy clusters, as well as those of future X-ray telescopes, we present a strategy for forward modeling all the foreground and background signals present in these data. This work […]


Continue.. Ruminations Upon the Modeling of X-ray Foregrounds, Backgrounds and Faint Sources

Ruminations Upon the Modeling of X-ray Foregrounds, Backgrounds and Faint Sources

Posted by klaurent Stanford

Kavli Affiliate: Steven Allen | Summary:With the goal of extracting as much information as possible from Chandra and XMM-Newton observations of faint, diffuse sources such as galaxy clusters, as well as those of future X-ray telescopes, we present a strategy for forward modeling all the foreground and background signals present in these data. This work […]


Continue.. Ruminations Upon the Modeling of X-ray Foregrounds, Backgrounds and Faint Sources