February 2026 – Page 16 – Kavli Institute Pre-Print Publications

A Deep Precursor-Dip-Main Superoutburst Sequence in VW Hydri Observed with TESS: High-Cadence Constraints on the Thermal-Tidal Instability Model

Posted by klaurent February 10, 2026February 23, 2026MIT

Kavli Affiliate: Avi Shporer | Summary:We present 120s cadence TESS observations of three superoutbursts of the SU UMa-type dwarf nova VW Hydri. Two events (SO2 in Sectors 87+88 and SO3 in Sector 93) exhibit a pronounced, temporally pronounced precursor-dip followed by a rapid rise into the main superoutburst plateau. This morphology, previously seen in Kepler […]

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Microlensing events and primordial black holes in the axionlike curvaton model

Posted by klaurent February 10, 2026February 23, 2026Tokyo

Kavli Affiliate: Masahiro Kawasaki | Summary:Recently, Subaru Hyper Suprime-Cam (HSC) observations found 12 candidates for microlensing events. These events can be explained by primordial black holes (PBHs) with masses of $10^-7$-$10^-6 M_odot$ and a fraction of all dark matter of $f_mathrmPBH = mathcalO(10^-1)$. In this paper, we consider the PBH production in two types of […]

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

Posted by klaurent February 10, 2026Caltech

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 […]

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

Posted by klaurent February 10, 2026Caltech

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

Posted by klaurent February 10, 2026February 23, 2026Peking

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 […]

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

Posted by klaurent February 10, 2026Tokyo

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 […]

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

Posted by klaurent February 10, 2026February 23, 2026Tokyo

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

Posted by dbos February 9, 2026February 18, 2026Hopkins

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) […]

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

Posted by dbos February 9, 2026February 18, 2026NTNU

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. […]

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

Posted by dbos February 9, 2026February 23, 2026UCSD / 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 […]

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