J/A+A/530/A42 X-ray properties of AGNs in XBS (Corral+, 2011)
The X-ray spectral properties of the AGN population in the XMM-Newton bright
serendipitous survey.
Corral A., Della Ceca R., Caccianiga A., Severgnini P., Brunner H.,
Carrera F.J., Page M.J., Schwope A.D.
<Astron. Astrophys., 530, A42 (2011)>
=2011A&A...530A..42C 2011A&A...530A..42C
ADC_Keywords: Active gal. nuclei ; X-ray sources
Keywords: X-rays: general - X-rays: diffuse background - surveys -
galaxies: active
Abstract:
X-ray surveys are a key instrument in the study of active galactic
nuclei (AGN). Thanks to their penetrating ability, X-rays are able to
map the innermost regions close to the central super massive black
hole (SMBH) as well as to detect and characterize its emission up to
high redshift.
We present here a detailed X-ray spectral analysis of the AGN
belonging to the XMM-Newton bright survey (XBS). The XBS is composed
of two flux-limited samples selected in the complementary 0.5-4.5
and 4.5-7.5keV energy bands and comprising more than 300 AGN up to
redshift ∼2.4.
We performed an X-ray analysis following two different approaches: by
analyzing individually each AGN X-ray spectrum and by constructing
average spectra for different AGN types.
Description:
The sample of 305 AGN discussed here (XBS AGN sample hereafter) has
been extracted from the XMM-Newton bright serendipitous survey (Cat.
IX/41).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 89 305 Summary of XMM-Newton observations used
table3.dat 95 305 Power law fit results
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See also:
IX/41 : XMM-Newton Serendipitous Source Catalogue 2XMMi-DR3 (XMM-SSC, 2010)
J/A+A/428/383 : XMM-Newton Bright Serendipitous Survey (Della Ceca+, 2004)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [XBS]
4- 19 A16 --- XBS Source name (JHHMMSS.s+DDMMSS)
21- 30 A10 --- ObsID Observation identifier
32- 36 A5 --- pn Filter in use during the observation for
pn camera
38- 42 A5 --- MOS1 Filter in use during the observation for
MOS1 camera
44- 48 A5 --- MOS2 Filter in use during the observation for
MOS2 camera
50- 53 F4.2 10+20cm-2 NHX Galactic column density toward the used
XMM-Newton pointing
55- 59 F5.2 ks ExpTpn ? pn resulting exposure time after removing
high-background intervals
61- 66 F6.2 ks ExpT1 ? MOS1 resulting exposure time after removing
high-background intervals
68- 73 F6.2 ks ExpT2 ? MOS2 resulting exposure time after removing
high-background intervals
75- 79 I5 ct Count Total EPIC counts (pn+MOS1+MOS2)
81- 89 A9 --- Sample Sample the source belongs to
(BSS = Bright Serendipitous Survey)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [XBS]
4- 19 A16 --- XBS Source name (JHHMMSS.s+DDMMSS)
20 A1 --- n_XBS [p] low-confidence fit (1)
22- 27 A6 --- Type Classification (AGN1, AGN2 or BL Lac)
28- 29 A2 --- n_Type [be ] Note (1)
31- 35 F5.3 --- z Redshift
36 A1 --- n_z [b] New optical identification (1)
38- 41 F4.2 --- Gamma Photon index Γ
42 A1 --- n_Gamma [f] Fixed value of Γ (1)
44 A1 --- l_NH Limit flag on NH
45- 50 F6.3 10+22cm-2 NH Intrinsic column density
52- 55 F4.2 mW/m2 FX Observed flux in the 2-10keV band,
de-absorbed by our Galaxy (2)
57- 61 F5.2 [10-7W] LX Intrinsic luminosity in the 2-10keV band (2)
63- 68 F6.2 --- chi2 Chi2 value
69- 71 I3 --- dof Degrees of freedom
74- 78 E5.3 % Prob Null hypothesis probability
81- 89 A9 --- Sample Sample the source belongs to (G1)
91- 95 A5 --- PL Whether the simple power law is considered
as our best fit (Y) or not (N) (3)
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Note (1): Notes as follows:
p = null hypothesis probability <10%
e = elusive AGN
f = fixed parameter
b = new optical identifications
Note (2): Fluxes and luminosities refer to the MOS2 calibration.
Note (3): In the case it is not, a number indicates the corresponding
table's number where our considered best fit is reported:
5 = unabsorbed AGN;
6 = black-body;
7 = ionized absorbed power law;
8 = power law plus reflected component;
9 = Leaky/Leaky+line;
10 = power law plus thermal component ;
11 = power law and absorption edges
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Global Notes:
Note (G1): the samples are:
BSS = Bright Serendipitous Survey
HBSS = Hard Bright Serendipitous Survey
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 30-Aug-2011