Table 1
High variability candidate AGN sample.
| XMMSL1 name | Type | z | LX,0.2 − 2 keV | XMM/RASS | 0.2–2 keV CR | 2−10 keV CR | Mbh | Common name |
| (1042 erg s-1) | ratio | ct s-1 | ct s-1 | log(M⊙) | ||||
|
|
||||||||
| J005953.1+314934 | Sy 1.2 | 0.0149 | 5.5 | 12.4 ± 1.4 | 8.14 ± 0.79 | 1.76 ± 0.39 | 6.5 | Mrk 352 |
| J015510.9-140028 | – | – | – | > 45.0 | 0.63 ± 0.27 | – | – | |
| J020303.1-074154 | Sy 1 | 0.0615 | 25.6 | > 38.4 | 2.15 ± 0.59 | – | 6.8 | 2MASX J02030314-0741514 |
| J024916.6-041244 | Sy 1.9 | 0.0186 | 1.9 | > 24.6 | 1.84 ± 0.80 | – | 5.7 | 2MASX J02491731-0412521 |
| J034555.1-355959a | – | – | – | > 15.3 | 1.06 ± 0.29 | 1.463 ± 0.384 | – | MRSS 358-033707 |
| J044347.0+285822a | Sy 1 | 0.0217 | 2.6 | 15.7 ± 4.2 | 1.62 ± 0.46 | 1.60 ± 0.58 | 7.3 | UGC 3142 |
| J045740.0-503053 | – | – | – | > 18.1 | 2.25 ± 0.48 | – | – | 2MASX J04574068-5030583 |
| J051935.5-323928a | Sy 1.5 | 0.0125 | 0.76 | 18.0 ± 6.4 | 7.57 ± 0.97 | 1.021 ± 0.396 | 6.6 | ESO 362-G018 |
| J064541.1-590851a | – | – | – | > 29.9 | 1.09 ± 0.35 | 0.785 ± 0.430 | – | 2MASX J06454155-5908456 |
| J070841.3-493305a | NLS 1 | 0.0406 | 14.5 | 13.4 ± 2.2 | 6.63 ± 1.04 | – | 7.1 | 1H 0707-495 |
| J082753.7+521800a | QSO | 0.3378 | 578 | > 16.3 | 1.14 ± 0.24 | 0.629 ± 0.277 | 7.8 | 87GB 082409.1+522804 |
| J090421.2+170927 | QSO | 0.0733 | 15.9 | > 32.5 | 0.91 ± 0.25 | – | 7.4 | SDSS J090421.39+170933.2 |
| J093922.5+370945 | NLS 1 | 0.1861 | 241 | > 33.9 | 1.90 ± 0.39 | – | 7.9 | 2MASS J09392289+3709438 |
| J100534.8+392856 | Sy 1 | 0.1409 | 106 | > 15.4 | 1.55 ± 0.22 | – | 7.8 | 2MASX J10053467+3928530 |
| J104745.6-375932 | Sy 1 | 0.0755 | 47 | > 13.3 | 2.51 ± 0.39 | – | 7.2 | 6dFGS gJ104745.7-375932 |
| J111527.3+180638 | liner | 0.00278 | 0.073 | > 54.4 | 4.95 ± 0.65 | – | – | NGC 3599 |
| J112841.5+575017a | Sy 2 | 0.0509 | 10.9 | > 17.8 | 1.37 ± 0.34 | 0.43 ± 0.18 | 7.6 | MCG+10-17-004 |
| J113001.8+020007 | – | – | – | > 21.0 | 1.47 ± 0.43 | – | – | |
| J121335.0+325609 | QSO | 0.222 | 154 | 21.0 ± 7.3 | 0.82 ± 0.19 | – | 7.9 | SDSS J121334.67+325615.2 |
| J132342.3+482701 | inactive | 0.0875 | 39 | > 38.1 | 1.60 ± 0.37 | – | – | SDSS J132341.97+482701.2 |
| J162553.4+562735a | QSO | 0.307 | 442 | > 26.4 | 1.11 ± 0.28 | – | 7.9 | SBS 1624+565 |
| J173739.3-595625a | Sy 2 | 0.0170 | 3.09 | > 19.4 | 4.20 ± 0.82 | 1.47 ± 0.40 | 7.3 | ESO 139-G012 |
| J183521.4+611942a | blazar | 2.274 | 61 449 | 16.9 ± 6.7 | 1.16 ± 0.26 | – | 9.7 | QSO J1835+6119 |
| J193439.3+490922a | – | – | – | >26.1 | 0.95 ± 0.32 | – | – | 2MASX J19343950+4909211 |
Notes. Information on the AGN type, redshift and common name were obtained from the NASA/IPAC Extragalactic Database (NED; https://ned.ipac.caltech.edu/) and references therein. LX is the luminosity as seen in the XMM slew survey in the 0.2–2.0 keV band, calculated using a model of a power of index Γ = 1.7 and Galactic absorption. The XMM/RASS ratio is the ratio of the XMM slew and ROSAT fluxes, or upper limits, for the 0.2–2 keV energy range, using the same spectral model. Errors are 1σ. The black hole masses have been estimated using the k-band luminosity as described in Sect. 3 and have a typical uncertainty of 0.3 dex.
Some sources have several slew survey observations. In those cases we list the first observation in which a significant flux change by at least a factor of ten was observed compared to the ROSAT flux, or upper limit, in the 0.2–2 keV band. The soft, 0.2–2 keV, and hard, 2–10 keV, count rates correspond to the values seen in this slew observation. The hard band count rate is only quoted if the source was actually detected in this band.
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