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Cosmic gamma-ray burst from intergalactic relativistic dust grains

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Abstract

Charged dust grains of radiia≃3×10−6∼3×10−5 cm may acquire relativistic energy (>1018 eV) in the intergalactic medium. In order to attain relativistic energy, dust grains have to move in and out (‘scattering’) of the magnetic field of the medium. A relativistic grain of radiusa≤10−5 cm with Lorentz factor γ∼103 approaching the Earth will break up either due to electrostatic charge or due to sputtering about 150∼100 km, and may scatter solar photons via a fluorescence process. Dust grains may also melt into droplets in the solar vicinity and may contribute towards observed gamma-ray bursts.

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Authors and Affiliations

  1. Dept. of Mathematics, University of Dundee, UK

    Ajoy Kumar Dasgupta

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  1. Ajoy Kumar Dasgupta
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Dasgupta, A.K. Cosmic gamma-ray burst from intergalactic relativistic dust grains. Astrophys Space Sci 63, 517–523 (1979). https://doi.org/10.1007/BF00638920

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  • DOI: https://doi.org/10.1007/BF00638920

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