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Browsing by Author "Brenneman, L."

Browsing by Author "Brenneman, L."

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  • The Broadband Spectral Variability of MCG-6-30-15 Observed by NuSTAR and XMM-Newton 
    Marinucci, A.; Matt, G.; Miniutti, G.; Guainazzi, M.; Parker, M. L.; Brenneman, L.; Fabian, A. C.; Kara, E.; Arevalo, P.; Ballantyne, D. R.; Boggs, S. E.; Cappi, M.; Christensen, F. E.; Craig, W. W.; Elvis, M.; Hailey, C. J.; Harrison, F. A.; Reynolds, C. S.; Risaliti, G.; Stern, D. K.; Walton, D. J.; Zhang, W. (2014)
    MCG-6-30-15, at a distance of 37 Mpc (z = 0.008), is the archetypical Seyfert 1 galaxy showing very broad Fe Ka emission. We present results from a joint NuSTAR and XMM-Newton observational campaign that, for the first ...
  • Improved Reflection Models of Black Hole Accretion Disks: Treating the Angular Distribution of X- Rays 
    García, J.; Dauser, T.; Lohfink, A.; Kallman, T. R.; Steiner, J. F.; McClintock, J. E.; Brenneman, L.; Wilms, J.; Eikmann, W.; Reynolds, C. S.; Tombesi, F. (2014)
    X-ray reflection models are used to constrain the properties of the accretion disk, such as the degree of ionization of the gas and the elemental abundances. In combination with general relativistic ray tracing codes, ...
  • The NuSTAR spectrum of Mrk 335: extreme relativistic effects within two gravitational radii of the event horizon? 
    Parker, M. L.; Wilkins, D. R.; Fabian, A. C.; Grupe, D.; Dauser, T.; Matt, G.; Harrison, F. A.; Brenneman, L.; Boggs, S. E.; Christensen, F. E.; Craig, W. W.; Gallo, L. C.; Hailey, C. J.; Kara, E.; Komossa, S.; Marinucci, A.; Miller, J. M.; Risaliti, G.; Stern, D.; Walton, D. J.; Zhang, W. W. (2014)
    We present 3-50 keV NuSTAR observations of the active galactic nuclei Mrk 335 in a very low flux state. The spectrum is dominated by very strong features at the energies of the iron line at 5-7 keV and Compton hump from ...
  • Principal component analysis of MCG-06-30-15 with XMM-Newton 
    Parker, M. L.; Marinucci, A.; Brenneman, L.; Fabian, A. C.; Kara, E.; Matt, G.; Walton, D. J. (2014)
    We analyse the spectral variability of MCG-06-30-15 with 600 k s of XMM-Newton data, including 300 k s of new data from the joint XMM-Newton and NuSTAR 2013 observational campaign. We use principal component analysis to ...
  • Probing general relativistic effects during active galactic nuclei X-ray eclipses 
    Risaliti, G.; Nardini, E.; Elvis, M.; Brenneman, L.; Salvati, M. (2011)
    Long X-ray observations of bright active galactic nuclei (AGN) show that X-ray eclipses, with durations from a few hours to a few days, are rather common. This opens up a new window of opportunity in the search for signatures ...
  • Properties of the Obscuring Torus in NGC 1052 from Multiepoch Broadband X-Ray Spectroscopy 
    Balokovic, Mislav; Cabral, S. E.; Brenneman, L.; Urry, C. M. (2021)
    Obscuration of the innermost parts of active galactic nuclei (AGN) is observed in the majority of the population both in the nearby universe and at high redshift. However, the nature of the structures causing obscuration, ...
  • Revealing the X-ray variability of AGN with principal component analysis 
    Parker, M. L.; Fabian, A. C.; Matt, G.; Koljonen, K. I. I.; Kara, E.; Alston, W.; Walton, D. J.; Marinucci, A.; Brenneman, L.; Risaliti, G. (2015)
    We analyse a sample of 26 active galactic nuclei (AGN) with deep XMM-Newton observations, using principal component analysis (PCA) to find model-independent spectra of the different variable components. In total, we identify ...
  • Simultaneous NuSTAR and XMM-Newton 0.5-80 keV spectroscopy of the narrow-line Seyfert 1 galaxy SWIFT J2127.4+5654 
    Marinucci, A.; Matt, G.; Kara, E.; Miniutti, G.; Elvis, M.; Arevalo, P.; Ballantyne, D. R.; Balokovic, Mislav; Bauer, F.; Brenneman, L.; Boggs, S. E.; Cappi, M.; Christensen, F. E.; Craig, W. W.; Fabian, A. C.; Fuerst, F.; Hailey, C. J.; Harrison, F. A.; Risaliti, G.; Reynolds, C. S.; Stern, D. K.; Walton, D. J.; Zhang, W. (2014)
    We present a broad-band spectral analysis of the joint XMM-Newton and Nuclear Spectroscopic Telescope Array observational campaign of the narrow-line Seyfert 1 SWIFT J2127.4+5654, consisting of 300 ks performed during three ...

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