A Long Hard-X-Ray Look at the Dual Active Galactic Nuclei of M51 with NuSTAR

  title={A Long Hard-X-Ray Look at the Dual Active Galactic Nuclei of M51 with NuSTAR},
  author={Murray Brightman and Mislav Balokovi'c and Michael J. Koss and D M Alexander and Adlyka Annuar and Hannah P. Earnshaw and Poshak Gandhi and Fiona A. Harrison and A Hornschemeier and Bret D. Lehmer and Meredith Powell and Andrew Francis Ptak and Blagoy Rangelov and T. P. Roberts and Daniel Stern and Dominic J. Walton and Andreas Zezas},
  journal={The Astrophysical Journal},
We present a broadband X-ray spectral analysis of the M51 system, including the dual active galactic nuclei (AGN) and several off-nuclear point sources. Using a deep observation by NuSTAR, new high-resolution coverage of M51b by Chandra, and the latest X-ray torus models, we measure the intrinsic X-ray luminosities of the AGN in these galaxies. The AGN of M51a is found to be Compton thick, and both AGN have very low accretion rates ($\lambda_{\rm Edd} 10^{39}$ erg s$^{-1}$ and find that a… Expand

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