3 papers
astro-ph.HE2025
First X-ray polarimetric view of a Low-Luminosity Active Galactic Nucleus: the case of NGC 2110
Sudip Chakraborty, Ajay Ratheesh, Daniele Tagliacozzo +20
Low-Luminosity Active Galactic Nuclei (LLAGN) provides a unique view of Comptonization and non-thermal emission from accreting black holes in the low-accretion rate regime. However…
astro-ph.HE2025
Is the Spin of the Black Hole in GX 339-4 Negative?
Andrzej A. Zdziarski, Srimanta Banerjee, Michal Szanecki +2
We have studied the accreting black hole binary GX 339--4 using two highly accurate broad-band X-ray data sets in very soft spectral states from simultaneous NICER and NuSTAR obser…
astro-ph.HE2025
Ultraviolet spectroscopy of the black hole X-ray binary MAXI J1820+070 across a state transition
Maria Georganti, Christian Knigge, Noel Castro Segura +8
We present ultraviolet (UV) spectroscopic observations covering three distinct accretion states of the low-mass X-ray binary (LMXB) MAXI J1820+070: the luminous hard state, a hard-…