2026 – Page 260 – Kavli Institute Pre-Print Publications

Signatures of a subpopulation of hierarchical mergers in the GWTC-4 gravitational-wave dataset

Posted by klaurent January 12, 2026MIT

Kavli Affiliate: Salvatore Vitale | Summary:Repeated black-hole mergers in dense stellar clusters are a plausible mechanism to populate the predicted gap in black hole masses due to the pair-instability supernova process. These hierarchical mergers carry distinct spin characteristics relative to first-generation black holes. We introduce an astrophysically motivated model in the joint space of effective […]

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Signatures of a subpopulation of hierarchical mergers in the GWTC-4 gravitational-wave dataset

Posted by klaurent January 12, 2026MIT

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Signatures of a subpopulation of hierarchical mergers in the GWTC-4 gravitational-wave dataset

Posted by klaurent January 12, 2026MIT

Kavli Affiliate: Salvatore Vitale | Summary:Repeated black-hole mergers in dense stellar clusters are a plausible mechanism to populate the predicted gap in black hole masses due to the pair-instability process. These hierarchical mergers carry distinct spin and tilt features relative to first-generation black holes, for which previous studies have found evidence at a population level […]

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Lagrangian Grid-based Estimation of Nonlinear Systems with Invertible Dynamics

Posted by klaurent January 12, 2026February 17, 2026Stanford

Kavli Affiliate: Hsiao-Mei (Sherry) Cho| First 5 Authors: [#item_custom_name[1, [#item_custom_name[2, [#item_custom_name[3, [#item_custom_name[4, [#item_custom_name[5| Summary:This paper deals with the state estimation of non-linear and non-Gaussian systems with an emphasis on the numerical solution to the Bayesian recursive relations. In particular, this paper builds upon the Lagrangian grid-based filter (GbF) recently-developed for linear systems and extends it […]

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Multi-wavelength properties of changing-state active galactic nuclei: I. the evolution of soft excess and X-ray continuum

Posted by klaurent January 12, 2026Peking

Kavli Affiliate: Claudio Ricci | Summary:Changing-state active galactic nuclei (CSAGNs) exhibit rapid variability, with mass accretion rates that can change by several orders of magnitude in a few years. This provides us with a unique opportunity to study the evolution of the inner accretion flow almost in real time. Here, we used over 1000 observations […]

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Emulator-Based Inference of Cosmological Subgrid Models

Posted by klaurent January 12, 2026Chicago

Kavli Affiliate: Katrin Heitmann | Summary:The formation of structure in the Universe at large scales is dominated by gravity, with baryonic physics becoming significant at $simrm Mpc$ scales. To capture the impact of baryonic physics, cosmological simulations must model gas dynamics and a host of relevant astrophysical processes. A recent extension of the Hardware/Hybrid Accelerated […]

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Broad line regions behind haze: Intrinsic shape of Br$γ$ line and its origin in a type-1 Seyfert galaxy

Posted by klaurent January 12, 2026Peking

Kavli Affiliate: Jinyi Shangguan | Summary:The broad-line region (BLR) of active galactic nuclei (AGN) is an essential component, yet its small size keeps its origin, structure, and kinematics uncertain. Infrared interferometry with VLTI/GRAVITY is now resolving BLR-scale emission, with data for NGC 3783 consistent with a rotating, geometrically thick configuration. However, the processes shaping the […]

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Broad line regions behind haze: Intrinsic shape of Br$γ$ line and its origin in a type-1 Seyfert galaxy

Posted by klaurent January 12, 2026Peking

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Neural representations supporting generalization under continual learning

Posted by dbos January 12, 2026February 4, 2026Columbia

Endothelial type I interferon signaling modulates the vascular response to ischemic brain injury Kavli Affiliate: Daphna Shohamy, Stefano Fusi, and Daniel Salzman | Authors: Daniel L Kimmel, Kimberly Lauren Stachenfeld, Nikolaus Kriegeskorte, Stefano Fusi, C. Daniel Salzman and Daphna Shohamy | Summary: Abstraction and generalization are essential for flexible decision-making in novel situations. Recent work […]

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A search for feebly-interacting particles in $B$ decays with missing energy at Belle

Posted by klaurent January 12, 2026February 17, 2026Stanford

Kavli Affiliate: Hsiao-Mei (Sherry) Cho| First 5 Authors: [#item_custom_name[1, [#item_custom_name[2, [#item_custom_name[3, [#item_custom_name[4, [#item_custom_name[5| Summary:We present a search for an invisible hidden-sector particle $ X_rminv$, produced in $B^0 to barD^0 X_rminv$ and $B^pmto h X_rminv$ decays, where $h = π^pm$, $K^pm$, $D_s^pm$, $p^pm$. The search is performed using $e^+ e^-$ collision data recorded with the Belle […]

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