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arXiv · 2610.20601

Transient PULSE: Code for the Transient Propagation of UltraLight (pseudo)Scalars to Earth

Jason Arakawa·Charles Cheung·Muhammad Hani Zaheer·Volodymyr Takhistov·Marianna Safronova
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Abstract

We present Transient PULSE, a software package that numerically implements a previously developed source-to-detector framework for transient ultralight bosonic signals from astrophysical bursts. Predicting these signals relies on connecting the source emission spectrum to its evolution during propagation and the resulting observables at a terrestrial detector. The package discretizes a user supplied energy spectrum into momentum modes, propagates them through a specified matter density profile and constructs the time-frequency energy density distribution at Earth, accounting for dispersion and in-medium screening effects. This treatment accommodates non-Gaussian source spectra and provides inputs for detector specific analyses. A complementary analytical module estimates coupling sensitivities, arrival time delays and screening thresholds from parameterized source and detector properties.

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Jason Arakawa, Charles Cheung, Muhammad Hani Zaheer, Volodymyr Takhistov, Marianna Safronova. 2026-10-14. Transient PULSE: Code for the Transient Propagation of UltraLight (pseudo)Scalars to Earth. https://arxiv.org/abs/2610.20601

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