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Table 4
SF exponent β from previous work and the present study.
| Reference | β | τmax (yr) | SF |
|
|
|||
| Hook et al. (1994) | 0.20 | 6 (rf) | C |
| Kawaguchi et al. (1998) | 0.35 | 2 (of) | A |
| Hawkins (2002), Quasars | 0.20 ± 0.01 | 20 (of) | A |
| Hawkins (2002), Seyferts | 0.36 ± 0.02 | 20 (of) | A |
| Vanden Berk et al. (2004) | 0.25 ± 0.01 | 2 (rf) | B |
| deVries et al. (2005) | 0.30 ± 0.01 | 50 (of) | A |
| Rengstorf et al. (2006) | 0.47 ± 0.07 | 2 (rf) | B |
| Wilhite et al. (2008) | 0.46 ± 0.03 | 2 (rf) | B |
| Bauer et al. (2009) | 0.36 ± 0.01 | 3 (rf) | A |
| Schmidt et al. (2010) | 0.43 ± 0.002 | 10 (of) | C |
| present study | 0.31 ± 0.03 | 3 (rf) | A |
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