Small-scale excesses in the infrared continuum radiation of active galactic nuclei

Details Small-scale excesses in the infrared continuum radiation of active galactic nuclei Small-scale excesses in the infrared continuum radiation of active galactic nuclei

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...358l..41c&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 358, Aug. 1, 1990, p. L41-L43. Research supported by the A. M. Ma

Mathematics

Logic

4

Active Galactic Nuclei, Continuous Radiation, Infrared Radiation, Interstellar Matter, Crystal Lattices, Ice, Phase Transformations

Scientific paper

Small-scale excesses in the infrared band observed in the continuum radiation from active galactic nuclei are explained in light of the morphological transformations of ice, which constitutes part of dust grains' outer mantles. Following laboratory simulation results, a double-peaked bump should be observed in the 18-23 microns wave band with a flux intensity ratio of about 3 between the one at the highest wavelength and that at the lowest. However, only the most prominent one could actually be detected. It is suggested that they are produced in the shocked clouds of the narrow-line region of active galactic nuclei.

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