The compositions of the HR 8799 planets reflect accretion of both solids and metal-enriched gas

Posted by klaurent Caltech

Kavli Affiliate: Dimitri Mawet| Summary:With four giant planets ($msim5-10~M_rm Jup$, $T_rmeffsim900-1200$ K) orbiting between 15-70 au, HR 8799 provides an unparalleled testbed for studying giant planet formation and probing compositional trends across the protoplanetary disk. We present new JWST/NIRSpec IFU observations ($2.85-5.3~μ$m, $Rapprox2700$) that now include the spectrum of HR 8799 b, and higher S/N […]


Continue.. The compositions of the HR 8799 planets reflect accretion of both solids and metal-enriched gas

Mass-Radius Constraints for 2S 0918-549 from an RXTE Superexpansion Burst: A Direct Cooling-Tail Analysis

Posted by klaurent Peking

Kavli Affiliate: Renxin Xu | Summary:Thermonuclear (Type I ) X-ray bursts from accreting neutron stars offer a means to determine neutron-star (NS) mass ($M$) and radius ($R$) and thereby probe the properties of matter at supranuclear density. A subset of these events, photospheric radius-expansion (PRE) bursts, provide a particularly powerful tool to constrain the neutron-star […]


Continue.. Mass-Radius Constraints for 2S 0918-549 from an RXTE Superexpansion Burst: A Direct Cooling-Tail Analysis

A proof of Dolbeault geometric Langlands for $mathrmGL_2$ with reduced spectral curves

Posted by klaurent Tokyo

Kavli Affiliate: Yukinobu Toda | Summary:In our previous paper with Tudor Pădurariu, we introduced the notion of limit categories for moduli stacks of Higgs bundles and formulated the Dolbeault geometric Langlands correspondence. These limit categories are expected to provide an effective “classical limit” of the categories of D-modules on the moduli stack of bundles, and […]


Continue.. A proof of Dolbeault geometric Langlands for $mathrmGL_2$ with reduced spectral curves

A proof of Dolbeault geometric Langlands for $mathrmGL_2$ with reduced spectral curves

Posted by klaurent Tokyo

Kavli Affiliate: Yukinobu Toda | Summary:In our previous paper with Tudor Pădurariu, we introduced the notion of limit categories for moduli stacks of Higgs bundles and formulated the Dolbeault geometric Langlands correspondence. These limit categories are expected to provide an effective “classical limit” of the categories of D-modules on the moduli stack of bundles, and […]


Continue.. A proof of Dolbeault geometric Langlands for $mathrmGL_2$ with reduced spectral curves

MV-ComBat and MV-CovBat: Multivariate Frameworks for Joint Harmonization of Multi-Metric Neuroimaging Data

Posted by dbos Hopkins

Kavli Affiliate: Martin Lindquist | Authors: Zheng Ren, Patrick Sadil and Martin Lindquist | Summary: Aggregating neuroimaging data across sites and studies is increasingly common, yet site- and scanner-related batch effects can obscure meaningful biological variation and introduce spurious associations. Although ComBat and its extensions are widely used, they are primarily designed for single-metric (univariate) […]


Continue.. MV-ComBat and MV-CovBat: Multivariate Frameworks for Joint Harmonization of Multi-Metric Neuroimaging Data

Functional connectivity profile of the amygdala subfields associates with emotional well-being in aging

Posted by dbos NTNU

Kavli Affiliate: Maryam Ziaei and Menno Witter | Authors: Shuer Ye, Arjun Dave, Xiaqing Lan, Menno P. Witter, Alireza Salami and Maryam Ziaei | Summary: Amygdala-related functional connectivity plays a crucial role in human emotion, cognition, and mental well-being. The amygdala is a highly heterogeneous structure, with subregions that have both distinct and overlapping functions. […]


Continue.. Functional connectivity profile of the amygdala subfields associates with emotional well-being in aging

Balancing Stability and Flow in Hippocampal Networks via Inductive Bias and Learned Symmetry Breaking

Posted by dbos UCSD / Salk

Kavli Affiliate: Terrence Sejnowski | Authors: Margot Wagner, Yusi Chen, Arjun Karuvally, Mia Cameron and Terrence J Sejnowski | Summary: sequential dynamics underlying replay, prediction and traveling waves. How hippocampal circuitry achieves both remains unclear. Here, we show that recurrent neural networks trained on continuous prediction tasks converge to a mixed-symmetry dynamical regime, in which […]


Continue.. Balancing Stability and Flow in Hippocampal Networks via Inductive Bias and Learned Symmetry Breaking

Heterogeneous single-cell dynamics support stable population codes for objects in the mouse anterior cingulate cortex

Posted by dbos NTNU

Kavli Affiliate: Clifford Kentros | Authors: Lucie A.L. Descamps, Wesley P. Clawson, Miguel M. Carvalho, Thomas Rogerson, Omer Hazon, Oscar M.T. Chadney, Mark J. Schnitzer and Clifford Kentros | Summary: Remembering our environment and its principal features is essential to our survival. The anterior cingulate cortex (ACC) has been implicated as a key region in […]


Continue.. Heterogeneous single-cell dynamics support stable population codes for objects in the mouse anterior cingulate cortex

Transient Relativistic Iron Emission Line from an X-ray Flaring Supermassive Black Hole

Posted by klaurent MIT

Kavli Affiliate: Erin Kara | Summary:We report the discovery of the first transient relativistic iron Kα line in an Active Galactic Nucleus (AGN) J1047+5907. The line was detected 21.5 days (rest-frame) after an X-ray coronal flare observed in 2008 and it exhibits significant broadening consistent with relativistic reflection from the accretion disk in the vicinity […]


Continue.. Transient Relativistic Iron Emission Line from an X-ray Flaring Supermassive Black Hole

Preferential generation of pathological tau species in specific subtypes of entorhinal neurons: implications for Alzheimer’s Disease.

Posted by dbos NTNU

Kavli Affiliate: Clifford Kentros, Valentina Di Maria and Menno Witter | Authors: Isak Martinsson, Valentina di Maria, Miguel Carvalho, Asgeir Kobro-Flatmoen, Maria-Letizia Potenza, Menno Witter and Clifford Kentros | Summary: Alzheimer’s Disease (AD) is distinguished by the presence of two key pathological features: amyloid plaques, accumulations of proteolytic products of Amyloid Precursor Protein, and neurofibrillary […]


Continue.. Preferential generation of pathological tau species in specific subtypes of entorhinal neurons: implications for Alzheimer’s Disease.