Dramatic Change in the Spectrum of FeLoBAL SDSS J163255.46+420407.7

Details Dramatic Change in the Spectrum of FeLoBAL SDSS J163255.46+420407.7 Dramatic Change in the Spectrum of FeLoBAL SDSS J163255.46+420407.7

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010iaus..267..104a&link_type=abstract

Co-Evolution of Central Black Holes and Galaxies, Proceedings of the International Astronomical Union, IAU Symposium, Volume 267

Astronomy and Astrophysics

Astronomy

Galaxies: Active, Quasars: Individual (Sdss J 163255.46+420407.7), Quasars: Absorption Lines

Scientific paper

We serendipitiously found that the iron-rich low-ionization broad absorption-line (FeLoBAL) quasar SDSS J 163255.46+420407.7 showed a dramatic change in its spectrum over 3.4 years in the rest frame of the quasar. A simple photoionization model suggests the increase in the nuclear radiation caused these changes. Given the recombination coefficient of Fe+, the relaxation time of the absorbing gas suggests ne > 104 cm-3.

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