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20202026
most citedThe NANOGrav 15-year Data Set: Search for Signals from New Physics

801 citations · 1.1k across the 19 of their papers we have counts for

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astro-ph.CO2026

Close Pulsar Pairs See Dark Matter Substructure through the Gravitational-Wave Background

Abhiram Cherukupalli, Vincent S. H. Lee, Kim V. Berghaus +1

Pulsar timing arrays detect signals from dark matter substructure, but a nanohertz gravitational-wave background (GWB) severely degrades their sensitivity. We show that timing puls…

hep-th2026

A Universal Kaluza-Klein Graviton Cascade Rate

Vincent S. H. Lee, Lisa Randall, Marcos Riojas

We obtain a general decay rate between Kaluza-Klein (KK) gravitons, resolving an ambiguity in the literature concerning these decays. The amplitude is determined not only by the ma…

hep-ph2026

Proper Time Shifts in Pulsar Timing Arrays

Vincent S. H. Lee

Pulsar timing arrays are a powerful tool for probing low-frequency gravitational phenomena and physics beyond the Standard Model. We establish a general, gauge-invariant framework…

hep-ph2026

A Warped Extra Dimensional Candidate for the LZ 248 keV Event

Vincent S. H. Lee, Lisa Randall

The recent result by the LUX-ZEPLIN (LZ) experiment of a single nuclear-recoil event at suggests an interpretation in terms of inelastic scattering between dark…

astro-ph.GA2026

Detectable subhalo impacts in Milky Way streams

Junyang Lu, Elias Bernreuther, Tongyan Lin +3

Dark matter subhalos leave gravitational imprints in the stellar streams of the Milky Way. Observing individual strong impacts of subhalos offers a compelling way to constrain and…

astro-ph.CO2026

Correlated signals of ultralight scalar dark matter in pulsar timing

Joshua W. Foster, Kimberly K. Boddy, Jeff A. Dror +5

Pulsar timing arrays (PTAs) are sensitive to ultralight dark matter (ULDM) in the - mass range, with existing datasets already probing otherwise op…

astro-ph.CO2026

Pulsar Timing Sensitivity to Dark Matter Substructure in the Presence of a Stochastic Gravitational-Wave Background

Abhiram Cherukupalli, Vincent S. H. Lee, Kim Berghaus +1

Pulsar timing arrays (PTAs) can detect dark matter (DM) substructure through the small shifts a transiting DM subhalo imprints on pulse arrival times. Recently found evidence for a…

astro-ph.CO2026

Primordial Non-Gaussianity and the Field-Level Cramer-Rao Bound

Eugene Chen, Daniel Green, Vincent S. H. Lee

Primordial non-Gaussianity is one of the most powerful probes of the inflationary epoch. The particle spectrum relevant to inflation, including masses and spins, is encoded in the…