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X-ray fluctuation timescale and Black Hole mass relation in AGN

Published online by Cambridge University Press:  23 June 2017

Amri Wandel  and
Mathew Malkan
Amri Wandel
Affiliation:
Racah Institute, The Hebrew University of Jerusalem, Jerusalem 91904, Israel email: amri@huji.ac.il
Mathew Malkan
Affiliation:
Dept. of Astronomy, University of California, Los Angeles, California, U.S.A. email: malkan@astro.ucla.edu
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Abstract

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We analyze the fluctuations in the X-ray flux of 20 AGN (mainly Seyfert 1 galaxies) monitored by RXTE and XMM-Newton with a sampling frequency ranging from hours to years, using structure function (SF) analysis. We derive SFs over four orders of magnitude in the time domain (0.03-300 days). Most objects show a characteristic time scale, where the SF flattens or changes slope. For 10 objects with published power-spectral density (PSD) the break time scales in the SF and PSD are similar and show a good correlation. We also find a significant correlation between the SF timescale and the mass of the central black hole, determined for most objects by reverberation mapping.

Keywords

AGNX-rayFluctuationsStructure FunctionsPower Spectral DensityBlack Holes
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S324: New Frontiers in Black Hole Astrophysics , September 2016 , pp. 172 - 175
Copyright
Copyright © International Astronomical Union 2017 

References

Chatterjee, , et al. 2009, ApJ 704, 1689 Google Scholar
Chatterjee, , et al. 2011, ApJ 734, 43 Google Scholar
Collier, S. & Peterson, B. 2001, ApJ 2001, 555, 775 Google Scholar
Edelson, R. & Nandra, K. 1999, ApJ 514, 682 Google Scholar
Emmanoulopoulos, D., & McHardy, I. M. and Uttley, P. 2010, MNRAS 404, 931 Google Scholar
Kaspi, S. et al. 2000, ApJ 533, 631 Google Scholar
Kataoka, , et al. 2001, ApJ 560, 659 Google Scholar
Kelly, B. C. et al. 2014, ApJ 788, 33 Google Scholar
Markowitz, , et al. 2003, ApJ 593, 96 Google Scholar
McHardy, , et al. 2005, MNRAS 348, 783 Google Scholar
McHardy, I. M. et al. 2006, Nature 444 730 Google Scholar
Peterson, B. et al. 2004, ApJ 613, 632 Google Scholar
Rothschild, R. E., et al. 2011, ApJ 733, 23 Google Scholar
Simonetti, , et al.. 1985, ApJ 295, 46S Google Scholar
Timmer & Koenig 1995, A&A 300, 707 Google Scholar
Uttley, P., McHardy, I. M. & Papadakis, , 2002, MNRAS 332, 231 Google Scholar
Uttley, P. & McHardy, I. M. 2005, MNRAS 363, 586 Google Scholar
Wandel, A. & Mushotzky, R. F. 1986, ApJ 306, L61 Google Scholar
Wandel, A., Peterson, B. & Malkan, M. 1999, ApJ 526, 579 Google Scholar
Webb, W. & Malkan, M. 2000, ApJ 540, 652 Google Scholar