The Infrared Variability of a Dust Model for Seyfert Galaxies

Details The Infrared Variability of a Dust Model for Seyfert Galaxies The Infrared Variability of a Dust Model for Seyfert Galaxies

Sep 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972ap%26ss..18..121k&link_type=abstract

Astrophysics and Space Science, Volume 18, Issue 1, pp.121-127

Astronomy and Astrophysics

Astrophysics

3

Scientific paper

Assuming a dust model of Reeset al. (1969), we study the time dependence of the infrared emission from grains which absorb variable ultraviolet radiation. A time scale for the variability is shown to be fairly small compared with the light travel-time across the infrared emitting region, of which size depends on the wavelength strongly. Comparison of calculated infrared light curves with observations of NGC 4151 leads to the conclusion that the variability at 2.2 μ is consistent with interpretation by the infrared emission on the basis of thermal process.

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