A dataset provided by the European Space Agency

Name 060580
Title Tightly constraining the Timescale-Mass-Accretion rate relationship in AGN


DOI 10.5270/esa-0lfal8y
Author Prof Ian McHardy
Description We have previously shown that AGN have a characteristic time-scale, Tb , which scales roughly as Mmdot (ie mass-accretion rate in Eddington units). However the range of M and mdot covered is not large and hence the dependency on mdot could vary between ~mdot^(-0.6) and mdot^(-1.3) (90% confidence), with similar mass uncertainties. Understanding this scaling relationship is crucial to our understanding of the accretion process. Therefore, particularly as some researchers have questioned any dependence on mdot, it is crucial to reduce the uncertainties by a factor of 2. The best way to do that is to add one orbit of XMM observations to existing RXTE monitoring to determine Tb in 2 extreme AGN, one with mdot x10 lower, and 1 with mass x10 higher, than previously observed.
Publication An XMM-Newton view of the 'bare. nucleus of Fairall 9 . Emmanoulopoulos, D., Papadakis, I. E., et all. . MNRAS . 415-1895 . 2011 . 2011MNRAS.415.1895E ,
X-ray variability of 104 active galactic nuclei. XMM-Newton power-spectrum density profiles . Gonzalez-Martin, O., Vaughan, S., . A&A . 544-80 . 2012 . 2012A&A...544A..80G ,
The Black Hole Spin and Soft X-Ray Excess of the Luminous Seyfert Galaxy Fairall 9 . Lohfink, Anne M., Reynolds, Christopher S., et all. . ApJ . 758-67 . 2012 . 2012ApJ...758...67L ,
X-ray spectral analysis of the low-luminosity active galactic nucleus NGC 7213 using long XMM-Newton observations . Emmanoulopoulos, D., Papadakis, I. E., et all. . MNRAS . 429-3439 . 2013 . 2013MNRAS.429.3439E ,
A Comparison of Hard X-ray Photon Indices and Iron Kalpha Emission Lines in X-ray Luminous Narrow- and Broad-line Seyfert 1 Galaxies . Zhou, Xin-Lin, Zhang, Shuang-Nan, . ApJ . 713-11 . 2010 . 2010ApJ...713L..11Z ,
Are X-Ray Emitting Coronae around Supermassive Black Holes Outflowing? . Liu, Teng, Wang, Jun-Xian, et all. . ApJ . 783-106 . 2014 . 2014ApJ...783..106L ,
The Fast UV Variability of the Active Galactic Nucleus in Fairall 9 . Lohfink, Anne M., Reynolds, Christopher S., et all. . ApJ . 788-10 . 2014 . 2014ApJ...788...10L ,
Warm absorbers in X-rays (WAX), a comprehensive high-resolution grating spectral study of a sample of Seyfert galaxies - I. ...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2009-11-11T21:05:46Z/2009-12-11T08:04:07Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations.
Since Earth's atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2011-01-13T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2011-01-13T00:00:00Z, 060580, 17.56_20190403_1200. https://doi.org/10.5270/esa-0lfal8y