The Intensity of Diffuse Galactic Emission Reflected by Meteor Trails

We calculate the reflection of diffuse galactic emission by meteor trails and investigate its potential relationship to Meteor Radio Afterglow (MRA). The formula to calculate the reflection of diffuse galactic emission is derived from a simplified case, assuming that the signals are mirrored by the...

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Bibliographic Details
Published in:arXiv.org 2023-11
Main Authors: Zhao, Feiyu, Liang, Ruxi, Yang, Zepei, Huanyuan Shan, Zheng, Qian, Zhang, Qiqian, Guo, Quan
Format: Article
Language:English
Subjects:
Afterglows
Algorithms
Broadband
Emission analysis
Meteor trails
Meteors
Meteors & meteorites
Ray tracing
Reflection
Sidereal time
Sky models
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Summary:We calculate the reflection of diffuse galactic emission by meteor trails and investigate its potential relationship to Meteor Radio Afterglow (MRA). The formula to calculate the reflection of diffuse galactic emission is derived from a simplified case, assuming that the signals are mirrored by the cylindrical over-dense ionization trail of meteors. The overall observed reflection is simulated through a ray tracing algorithm together with the diffuse galactic emission modelled by the GSM sky model. We demonstrate that the spectrum of the reflected signal is broadband and follows a power law with a negative spectral index of around -1.3. The intensity of the reflected signal varies with local sidereal time and the brightness of the meteor and can reach 2000 Jy. These results agree with some previous observations of MRAs. Therefore, we think that the reflection of galactic emission by meteor trails can be a possible mechanism causing MRAs, which is worthy of further research.
ISSN:2331-8422
DOI:10.48550/arxiv.2310.13929