330 citations · 1.1k across the 24 of their papers we have counts for
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Fading AGN Candidates: AGN Histories and Outflow Signatures
William C. Keel, Chris J. Lintott, W. Peter Maksym +12
We consider energy budgets and radiative history of 8 fading AGN, identified from mismatch between the ionizion of very extended (>10 kpc) ionized clouds and the luminosity of the…
Active Galactic Nuclei from HeII: a more complete census of AGN in SDSS galaxies yields a new population of low-luminosity AGN in highly star-forming galaxies
Rudolf Bär, Anna K. Weigel, Lia F. Sartori +3
In order to perform a more complete census of active galactic nuclei (AGN) in the local Universe, we investigate the use of the HeII~ emission line diagnostic diagram by Shi…
Extended X-ray emission in the IC 2497 - Hanny's Voorwerp system: energy injection in the gas around a fading AGN
Lia F. Sartori, Kevin Schawinski, Michael Koss +6
We present deep Chandra X-ray observations of the core of IC 2497, the galaxy associated with Hanny's Voorwerp and hosting a fading AGN. We find extended soft X-ray emission from h…