29 citations · 79 across the 11 of their papers we have counts for
1 paper · 1 filter
R. Middei, S. Barnier, F. G. Saturni +10
Ultra-soft narrow line Seyfert 1 (US-NLSy) are a poorly observed class of active galactic nuclei characterized by significant flux changes and an extreme soft X-ray excess. This pe…