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52 papers · 2 filters
A variable magnetic disc wind in the black hole X-ray binary GRS 1915+105?
Ajay Ratheesh, Francesco Tombesi, Kiego Fukumura +3
GRS 1915+105 being one of the brightest transient black hole binary (BHB) in the X-rays, offers a unique test-bed for the study of the connection between accretion and ejection mec…
Speed limits for radiation driven SMBH winds
A. Luminari, F. Nicastro, M. Elvis +4
Ultra Fast Outflows (UFOs) are an established feature in X-ray spectra of AGNs. According to the standard picture, they are launched at accretion disc scales with relativistic velo…
Swift Multiwavelength Follow-up of LVC S200224ca and the Implications for Binary Black Hole Mergers
N. J. Klingler, A. Lien, S. R. Oates +41
On 2020 February 24, during their third observing run ("O3"), the Laser Interferometer Gravitational-wave Observatory and Virgo Collaboration (LVC) detected S200224ca: a candidate…
Multiwavelength variability and correlation studies of Mrk 421 during historically low X-ray and -ray activity in 20152016
MAGIC Collaboration, V. A. Acciari, S. Ansoldi +224
We report a characterization of the multi-band flux variability and correlations of the nearby (z=0.031) blazar Markarian 421 (Mrk 421) using data from Metsähovi, Swift, Fermi-LAT,…
Location and energetics of the ultra-fast outflow in PG 1448+273
M. Laurenti, A. Luminari, F. Tombesi +3
Ultra-fast outflows (UFOs) play a key role in the AGN feedback mechanism. It is therefore important to fully characterize their location and energetics. We study the UFO in the lat…
A New Transient Ultraluminous X-ray Source in NGC 7090
D. J. Walton, M. Heida, M. Bachetti +17
We report on the discovery of a new, transient ultraluminous X-ray source (ULX) in the galaxy NGC 7090. This new ULX, which we refer to as NGC 7090 ULX3, was discovered via monitor…