Browsing by Author "Steiner, James F."

Now showing items 1-3 of 3

    • High-density Reflection Spectroscopy of Black Hole X-Ray Binaries in the Hard State 

      Liu, Honghui; Jiang, Jiachen; Zhang, Zuobin; Bambi, Cosimo; Fabian, Andrew C.; Alonso-García, Javier; Ingram, Adam; Kara, Erin; Steiner, James F.; Tomsick, John A.; Walton, Dominic J.; Young, Andrew J. (2023-07-12)
      We present a high-density relativistic reflection analysis of 21 spectra of six black hole X-ray binaries in the hard state with data from NuSTAR and Swift. We find that 76% of the observations in our sample require a disk ...

    • NICER/NuSTAR Characterization of 4U 1957+11: A Near Maximally Spinning Black Hole Potentially in the Mass Gap 

      Barillier, Erin; Grinberg, Victoria; Horn, David; Nowak, Michael A.; Remillard, Ronald A.; Steiner, James F.; Walton, Dominic J.; Wilms, Jörn (2023-02-22)
      4U 1957+11 is a black hole candidate system that has been in a soft X-ray spectral state since its discovery. We present analyses of recent joint NICER and NuSTAR spectra, which are extremely well described by a highly ...

    • A NuSTAR and Swift View of the Hard State of MAXI J1813-095 

      Jiang, Jiachen; Buisson, Douglas J. K.; Dauser, Thomas; Fabian, Andrew C.; Fürst, Felix; Gallo, Luigi C.; Harrison, Fiona A.; Parker, Michael L.; Steiner, James F.; Tomsick, John A.; Ubach, Santiago; Walton, Dominic J. (2022-08-01)
      We present an analysis of the NuSTAR and Swift spectra of the black hole candidate MAXI J1813−095 in a failed-transition outburst in 2018. The NuSTAR observations show evidence of reflected emission from the inner region ...