Limiting on ALP-photon Coupling through GRB221009A
Abstract
This study investigates the constraints on ALPs parameters through the photon-ALP oscillation model, based on the high-energy photon propagation characteristics of the gamma-ray burst GRB 221009A. We briefly describe the Primakoff process and use it to derive the oscillation probability. Numerical simulations incorporate the GMF, IGMF, and EBL, utilizing the open-source code gammaALPs to simulate photon propagation from the source to Earth. By employing the chi2 statistical method and segmented spectral fitting of low-energy and high-energy observational data from HXMT-GECAM, the dependence of photon survival probability on ALP mass (ma) and coupling strength (ga) is analyzed. Results show that for the ALP mass range 10^-7 < ma < 10^2 neV, the upper limit on the coupling strength is ga < 0.27 * 10^-11 GeV^-1, improving constraints by one order of magnitude compared to the CAST experiment (6.6 * 10^-11 GeV^-1). Notably, high-energy data exhibit significantly stronger constraining power. This work provides a novel theoretical framework and observational basis for indirectly probing ALPs through extreme astrophysical phenomena.
Keywords
Cite
@article{arxiv.2503.18653,
title = {Limiting on ALP-photon Coupling through GRB221009A},
author = {Tong Chen and Yu Gao and Shijie Liu and Ying-nan Mao and Kechen Wang},
journal= {arXiv preprint arXiv:2503.18653},
year = {2025}
}
Comments
We request the withdrawal of our manuscript as it remains incomplete. The co-authors have not yet reached a consensus on certain details, and further analysis is needed regarding the anomalous dip observed in the high-energy parameter space. Since the current version lacks conclusive interpretations, we believe withdrawal is appropriate at this stage