The Intensity of Diffuse Galactic Emission Reflected by Meteor Trails
arXiv:2310.13929 · doi:10.1093/mnras/stad3429
Abstract
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.
arXiv comment15 pages, 10 figures, 2 tables, accepted for publication in MNRAS, 10.1093/mnras/stad3429
References in corpus (10)
- A model of diffuse Galactic Radio Emission from 10 MHz to 100 GHz
- Detection of Radio Emission from Fireballs
- Limits on GRB Prompt Radio Emission Using the LWA1
- Limits on radio emission from meteors using the MWA
- Altitudinal dependence of meteor radio afterglows measured via optical counterparts
- Rates, Flux Densities, and Spectral Indices of Meteor Radio Afterglows
- Dynamic Radio Spectra from two Fireballs
- Testing the Radiation Pattern of Meteor Radio Afterglow
- A Two Year Survey for VLF Emission from Fireballs
- Broadband Imaging to Study the Spectral Distribution of Meteor Radio Afterglows