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Main Authors: Gonzalez, Ivan, Salinas-Arizmendi, Daniel
Format: Preprint
Published: 2026
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Online Access:https://arxiv.org/abs/2602.15943
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author Gonzalez, Ivan
Salinas-Arizmendi, Daniel
author_facet Gonzalez, Ivan
Salinas-Arizmendi, Daniel
contents Synchrotron radiation plays a central role in astrophysical and high-energy processes. Its spectral description involves the synchrotron function, defined by a non-trivial integral of modified Bessel functions and commonly evaluated through numerical methods or dedicated approximations. In this work, we obtain a compact analytical representation of the synchrotron function using the Method of Brackets, which yields systematically controllable asymptotic expansions in both the small- and large-argument regimes. The resulting expressions accurately reproduce numerical integration and make the analytic structure of the function explicit. Our results provide an efficient alternative to repeated numerical evaluations and facilitate applications requiring fast and controlled approximations.
format Preprint
id arxiv_https___arxiv_org_abs_2602_15943
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle New formula for Asymptotic behavior of the Synchrotron function
Gonzalez, Ivan
Salinas-Arizmendi, Daniel
Mathematical Physics
High Energy Astrophysical Phenomena
Synchrotron radiation plays a central role in astrophysical and high-energy processes. Its spectral description involves the synchrotron function, defined by a non-trivial integral of modified Bessel functions and commonly evaluated through numerical methods or dedicated approximations. In this work, we obtain a compact analytical representation of the synchrotron function using the Method of Brackets, which yields systematically controllable asymptotic expansions in both the small- and large-argument regimes. The resulting expressions accurately reproduce numerical integration and make the analytic structure of the function explicit. Our results provide an efficient alternative to repeated numerical evaluations and facilitate applications requiring fast and controlled approximations.
title New formula for Asymptotic behavior of the Synchrotron function
topic Mathematical Physics
High Energy Astrophysical Phenomena
url https://arxiv.org/abs/2602.15943