Cosmic gamma-ray burst from intergalactic relativistic dust grains

Details Cosmic gamma-ray burst from intergalactic relativistic dust grains Cosmic gamma-ray burst from intergalactic relativistic dust grains

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ap%26ss..63..517d&link_type=abstract

Astrophysics and Space Science, vol. 63, no. 2, July 1979, p. 517-523.

Astronomy and Astrophysics

Astrophysics

5

Charged Particles, Cosmic Dust, Cosmic Rays, Gamma Rays, Intergalactic Media, Milky Way Galaxy, Relativistic Particles, Lorentz Force, Particle Collisions, Photoabsorption, Proton Energy, Sputtering, Temperature Gradients

Scientific paper

It is found that charged dust grains of radii in the range of 0.000003 - 0.00003 cm may acquire relativistic energy (in excess of 10 to the 18th eV) in the intergalactic medium. In order to attain relativistic energy, dust grains have to move in and out of the magnetic field of the medium. It is noted that a relativistic grain of a radius of less than or equal to 0.00001 cm with a Lorentz factor of 10 to the third approaching earth will break up either due to electrostatic charge or due to sputtering at about 150 to 100 km, and may scatter solar photons via a fluorescence process. Finally, dust grains may also melt into droplets in the solar vicinity and contribute towards observed gamma-ray bursts.

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