Table 4.
Duty cycles of blazars.
| Object | zobs | λEdd | Mfinal [M⊙] | fduty (for z0 = 20, Mseed = 10 M⊙) | z0 (for fduty = 1, Mseed = 10 M⊙) |
|---|---|---|---|---|---|
| PKS 0528+134 | 2.12 | 0.63 | 2.0 × 109 | 0.5 | 4.0 |
| TXS 1149–084 | 2.49 | 0.63 | 3.3 × 108 | 0.6 | 4.8 |
| PKS 0227–369 | 2.17 | 0.50 | 3.2 × 108 | 0.6 | 4.7 |
| S5 0014+813 | 3.37 | 0.93 | 8.9 × 109 | 0.7 | 7.0 |
| SDSS J142048.01+120545.9 | 4.03 | 0.96 | 4.5 × 108 | 0.7 | 8.5 |
Notes. Observed redshift zobs, fit Eddington ratio λ, fit final mass Mfinal, duty-cycle fduty required for a 10 M⊙ seed formed at z0 = 20, and formation redshift z0 required for a 10 M⊙ seed assuming continuous accretion (fduty = 1). All computations assume η = 0.10 and τS = 4.5 × 107 yr and use the Mfinal and λ values from Table 3. We report values rounded to one decimal place, except the Eddington ratio, which we round to two decimal places.
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