Capturing the Rare Spectral Change in a Nearby Seyfert

Details Capturing the Rare Spectral Change in a Nearby Seyfert Capturing the Rare Spectral Change in a Nearby Seyfert

Nov 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop..526g&link_type=abstract

Spitzer Proposal ID #526

Physics

Scientific paper

Spitzer has for the first time detected thermal continuum variability in the spectrum of an Active Galactic Nucleus (AGN). The Seyfert 1 Fairall 9 was observed in 2003 and in 2007 and has shown a distinct change in its slope in the 5-11um range. What is needed with this DDT observation is a third epoch to show how the change in emission is progressing and hence what that progression can tell us about the parsec scale structure of the putative torus that plays such a large role in AGN unification schemes.

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