Journal Article

Exploring the disc/jet interaction in the radio-loud quasar 4C+74.26 with Suzaku

J. Larsson, A. C. Fabian, D. R. Ballantyne and G. Miniutti

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 388, issue 3, pages 1037-1046
Published in print August 2008 | ISSN: 0035-8711
Published online July 2008 | e-ISSN: 1365-2966 | DOI:
Exploring the disc/jet interaction in the radio-loud quasar 4C+74.26 with Suzaku

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We report on a 90 ks Suzaku observation of the radio-loud quasar 4C+74.26. The source was observed in its highest flux state to date, and we find that it brightened by about 20 per cent during the observation. We see evidence of spectral hardening as the count rate increases and also find that the rms variability increases with energy up to about 4 keV. We clearly detect a broadened Fe line but conclude that it does not require any emission from inside about 50 rg, although a much smaller inner radius cannot be ruled out. The large inner radius of our best fit implies that the inner disc is either missing or not strongly illuminated. We suggest that the latter scenario may occur if the power-law source is located high above the disc, or if the emission is beamed away from the disc.

Keywords: galaxies: active; galaxies: individual: 4C+74.26; X-rays: galaxies

Journal Article.  8080 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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