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Table 1

Main properties of the most famous X-ray surveys (see Fig. 1).

Labela Name Area Flux limit Bandb Reference
deg.2 erg cm-2 s-1 keV

Examples of deep pencil beam surveys
G CDFS  ~ 0.1 1.9 × 10-17 0.5–2 Giacconi et al. (2001), Luo et al. (2008)
F CDFN  ~ 0.1 2.5 × 10-17 0.5–2 Brandt et al. (2001), Alexander et al. (2003)
H XMM-Newton Lockman Hole  ~ 0.43  ~ 1.9 × 10-16 0.5–2 Worsley et al. (2004), Brunner et al. (2008)

Examples of wide shallow contiguous surveys
N E-CDF-S  ~ 0.3 1.1 × 10-16 0.5–2 Lehmer et al. (2005)
M ELAIS-S1  ~ 0.6 5.5 × 10-16 0.5–2 Puccetti et al. (2006)
L XMM-COSMOS  ~ 2 1.7 × 10-15 0.5–2 Hasinger et al. (2007), Cappelluti et al. (2007, 2009)
I C-COSMOS  ~ 1 1.9 × 10-16 0.5–2 Elvis et al. (2009)
O AEGIS-X 0.67 5 × 10-17 0.5–2 Laird et al. (2009)

Examples of surveys based on serendipitous sources in archival data
A Hellas2XMM 3 5.9 × 10-16 0.5–2 Baldi et al. (2002)
C SEXSI  ~ 5 × 10-16 2–10 Harrison et al. (2003)
D XMM-BSS 28.1 7 × 10-14 0.5–4.5 Della Ceca et al. (2004)
E AXIS 4.8  ~2 × 10-15 2–10 Carrera et al. (2007)
P SXDS 1.14 6 × 10-16 0.5–2 Ueda et al. (2008)
B CHAMP  ~10  ~10-15 0.5–2 Kim et al. (2007)
Q TwoXMM (| b |  ≥ 20)  ~132.3  ~2 × 10-15 0.5–2 Mateos et al. (2008)

Notes. 

(a)

Label refers to Fig. 1;

(b)

The flux limit is related to this energy band.

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