Browsing University of Hertfordshire by Author "Madsen, Kristin K."

Now showing items 1-2 of 2

    • The high energy X-ray probe (HEX-P): probing the physics of the X-ray corona in active galactic nuclei 

      Kammoun, Elias; Lohfink, Anne M.; Masterson, Megan; Wilkins, Dan R.; Zhao, Xiurui; Balokovic, Mislav; Boorman, Peter G.; Connors, Riley; Coppi, Paolo; Fabian, Andrew; García, Javier A.; Madsen, Kristin K.; Rodriguez Cavero, Nicole; Sridhar, Navin; Stern, Daniel; Tomsick, John; Wevers, Thomas; Walton, Dominic J.; Bianchi, Stefano; Buchner, Johannes; Civano, Francesca M.; Lanzuisi, Giorgio; Mallick, Labani; Matt, Giorgio; Merloni, Andrea; Nardini, Emanuele; Piotrowska, Joanna M.; Ricci, Claudio; Wong, Ka-Wah; Zoghbi, Abderahmen (2024-01-05)
      The hard X-ray emission in active galactic nuclei (AGN) and black hole X-ray binaries is thought to be produced by a hot cloud of electrons referred to as the corona. This emission, commonly described by a power law with ...

    • Orbital Decay in M82 X-2 

      Bachetti, Matteo; Heida, Marianne; Maccarone, Thomas; Huppenkothen, Daniela; Israel, Gian Luca; Barret, Didier; Brightman, Murray; Brumback, McKinley; Earnshaw, Hannah P.; Forster, Karl; Fürst, Felix; Grefenstette, Brian W.; Harrison, Fiona A.; Jaodand, Amruta D.; Madsen, Kristin K.; Middleton, Matthew; Pike, Sean N.; Pilia, Maura; Poutanen, Juri; Stern, Daniel; Tomsick, John A.; Walton, Dominic J.; Webb, Natalie; Wilms, Jörn (2022-10-05)
      M82 X-2 is the first pulsating ultraluminous X-ray source discovered. The luminosity of these extreme pulsars, if isotropic, implies an extreme mass transfer rate. An alternative is to assume a much lower mass transfer ...