Productions of Metagalactic X-Rays by Relativistic Dust Grains

Details Productions of Metagalactic X-Rays by Relativistic Dust Grains Productions of Metagalactic X-Rays by Relativistic Dust Grains

Nov 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972ap%26ss..19..173h&link_type=abstract

Astrophysics and Space Science, Volume 19, Issue 1, pp.173-179

Astronomy and Astrophysics

Astrophysics

4

Scientific paper

The relativistic dust grains which may be responsible for ultra-high energy cosmic rays, as suggested by the present author, interact with the cosmic black-body radiation. This results in the energy loss of the relativistic dust grains, so that their energy spectrum is cut-off at the Lorentz factor as large as 2×103 (0.1μ/a), wherea is the grain radius. The black-body radiation is scattered and absorbed by the dust grains. The photons scattered and reemitted contribute to metagalactic X-rays. The X-ray intensity estimated is comparable to the observed one in the soft X-ray region.

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