J/A+A/542/A83 CAIXA. II. AGNs from excess variance analysis (Ponti+, 2012)
CAIXA: a catalogue of AGNs in the XMM-Newton archive.
III. Excess variance analysis.
Ponti G., Papadakis I., Bianchi S., Guainazzi M., Matt G., Uttley P.,
Bonilla N.F.
<Astron. Astrophys. 542, A83 (2012)>
=2012A&A...542A..83P 2012A&A...542A..83P
ADC_Keywords: Active gal. nuclei ; X-ray sources
Keywords: accretion, accretion disks - black hole physics -
methods: data analysis - galaxies: active - galaxies: nuclei -
X-rays: galaxies
Abstract:
We report on the results of the first XMM-Newton systematic "excess
variance" study of all the radio quiet, X-ray unobscured AGN. The
entire sample consist of 161 sources observed by XMM-Newton for more
than 10ks in pointed observations, which is the largest sample used
so far to study AGN X-ray variability on time scales less than a day.
Recently it has been suggested that the same engine might be at work
in the core of every Black Hole (BH) accreting object. In this
hypothesis, the same variability should be observed in all AGN, once
rescaled by the MBH (MBH) and accretion rate (dm/dt).
We systematically compute the excess variance for all AGN, on
different time-scales (10, 20, 40 and 80ks) and in different energy
bands (0.3-0.7, 0.7-2 and 2-10keV).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 76 168 List of all Multi-wavelength data for each source
table2.dat 146 168 *List of all the excess variance computed, in the
2-10keV band, with 10, 20, 40 and 80ks intervals
table4.dat 54 65 List of AGN for which MBH has been measured
to MBH estimated in otherwhise
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Note on table2.dat: This is an update of the multi-wavelength table published
in Bianchi et al. (2009, Cat. J/A+A/495/421, Paper I).
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See also:
J/A+A/495/421 : Catalog of AGN in XMM-Newton archive (CAIXA) (Bianchi+, 2009)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Sample Sample (G1)
5- 27 A23 --- Source Source name
29- 34 F6.4 --- z Redshift
36- 40 F5.2 [Msun] log(Mbh) ? Black-hole mass
42- 46 F5.2 [10-7W] log(Lbol)W ? Bolometric luminosity, from
Woo & Urry, 2002ApJ...579..530W 2002ApJ...579..530W
48- 52 F5.2 [10-7W] log(Lbol)E Bolometric luminosity, from
Elvis et al., 1994, Cat. J/ApJS/95/1
54- 58 F5.2 [10-7W] log(Lbol)M Bolometric luminosity, from Marconi et al.,
2004MNRAS.351..169M 2004MNRAS.351..169M
60- 64 F5.2 [10-7W] log(Lbol)V Bolometric luminosity, from Vasudevan et al.
2007MNRAS.381.1235V 2007MNRAS.381.1235V
66- 70 I5 km/s FWHM ? Hβ FWHM
72- 76 F5.2 --- Gamma ? Spectral index Γ
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Sample Sample (G1)
5- 27 A23 --- Source Source name
29- 33 F5.2 [Msun] log(Mbh) ? Black-hole mass
35- 39 F5.2 [10-7W] log(Lbol)M Bolometric luminosity, Marconi et al.,
2004MNRAS.351..169M 2004MNRAS.351..169M
41- 48 F8.6 --- s80 ? Excess variance (σ)2 computed,
in the 2-10keV band, with 80ks interval
50- 57 F8.6 --- e_s80 ? Error on s80 (lower value) (90%)
59- 66 F8.6 --- E_s80 ? Error on s80 (upper value) (90%) (1)
67- 75 F9.6 --- s40 ? Excess variance (σ)2 computed,
in the 2-10keV band, with 40ks interval
77- 84 F8.6 --- e_s40 ? Error on s40 (lower value) (90%)
86- 93 F8.6 --- E_s40 ? Error on s40 (upper value) (90%) (1)
94-102 F9.6 --- s20 ? Excess variance (σ)2 computed,
in the 2-10keV band, with 20ks interval
104-111 F8.6 --- e_s20 ? Error on s20 (lower value) (90%)
113-120 F8.6 --- E_s20 ? Error on s20 (upper value) (90%) (1)
121-129 F9.6 --- s10 ? Excess variance (σ)2 computed,
in the 2-10keV band, with 10ks interval
131-138 F8.6 --- e_s10 ? Error on s10 (lower value) (90%)
140-146 F7.5 --- E_s10 ? Error on s10 (upper value) (90%) (1)
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Note (1): Whenever the excess variance and its negative errors are equal
to 0, the positive error values represent the respective 90% excess
variance upper limits
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Sample Sample (G1)
5- 27 A23 --- Source Source name
29- 32 F4.2 [Msun] log(Mbh)o Black-hole mass optically estimated
35 A1 --- l_log(Mbh)v Limit flag on log(Mbh)v
36- 39 F4.2 [Msun] log(Mbh)v Black-hole mass estimated through variability
44- 47 F4.2 [Msun] e_log(Mbh)v ? Error on log(Mbh)v (lower limit)
51- 54 F4.2 [Msun] E_log(Mbh)v ? Error on log(Mbh)v (upper limit)
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Global notes:
Note (G1): R for the Rev (reverberation) sample and C for the CAIXAvar sample.
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Acknowledgements:
Gabriele Ponti, ponti(at)iasfbo.inaf.it
References:
Bianchi et al., Paper I 2009A&A...495..421B 2009A&A...495..421B, Cat. J/A+A/495/421
Bianchi et al., Paper II 2009A&A...501..915B 2009A&A...501..915B
(End) Patricia Vannier [CDS] 13-Jan-2012