Abstract Previous works have shown that dust particles can be accelerated to marginally relativistic velocities in supernova. In this paper we consider the observational signatures of the interactions of such particles with the Earth’s atmosphere. We develop a hydrodynamic and radiative model to explore the detectability of 1 mm sub-relativistic meteoroids. We find that a large fraction of the meteoroid energy during its passage through the Earth’s upper atmosphere powers the adiabatic expansion of a hot plasma cylinder, giving rise to acoustic shocks. Additionally, a global network of several hundred all-sky optical cameras with a time resolution of 10 - 4 s would be capable of detecting 1 mm sub-relativistic meteoroids.


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    Title :

    Observational signatures of sub-relativistic meteoroids


    Contributors:
    Siraj, Amir (author) / Loeb, Abraham (author)

    Published in:

    Advances in Space Research ; 69 , 10 ; 3891-3901


    Publication date :

    2022-03-01


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English


    Keywords :


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