26 citations · 59 across the 6 of their papers we have counts for
6 papers
Extreme AGN Variability in WISE: Powerful Flares and Candidate Tidal Disruption Events in AGN
Satya Teja Anuraag Upadhyayula, Daniel Stern, Kishalay De +7
We present first results from a systematic study of extreme mid-infrared variability of active galaxies across the -year baseline of the Wide-field Infrared Survey Explorer (W…
NuSTAR view of heavily absorbed AGN: The correlation
Christos Panagiotou, Roland Walter, Stephane Paltani
The nature of the putative torus and the outer geometry of active galactic nuclei (AGN) are still rather unknown and the subject of active research. Improving our understanding of…
NuSTAR view of Swift/BAT AGN: The - correlation
Christos Panagiotou, Roland Walter
The reflection hump is a prominent feature in the hard X-ray spectrum of active galactic nuclei (AGN). Its exact shape and its correlation to other quantities provide valuable info…
Reflection geometries in absorbed and unabsorbed AGN
Christos Panagiotou, Roland Walter
The hard X-ray emission of active galactic nuclei (AGN), and in particular, the reflection component, is shaped by the innermost and outer regions of the galactic nucleus. Our main…
The environment of the wind-wind collision region of Carinae
Christos Panagiotou, Roland Walter
Carinae is a colliding wind binary hosting two of the most massive stars and featuring the strongest wind collision mechanical luminosity. The wind collision region of this sys…
Fermi acceleration under control: Carinae
Roland Walter, Matteo Balbo, Christos Panagiotou
We used data from the Fermi Large Area Telescope obtained during the last 7 years and spanning two passages of Carinae at periastron and compared them with the predictions of p…