Table 1.
AGN sample.
| Name | Coordinates (J2000) | Heliocentric z | Hubble distance | Proposal ID (Filter) | Exposure time (s) |
|---|---|---|---|---|---|
| 5918 (F502M) | 5262 | ||||
| Mrk 3 | 93.901519°, 71.037525° | 0.013509 | 59.59 Mpc | 6702 (F275W)1 | 5187 |
| 6702 (F342W)1 | 1697 | ||||
| NGC 3862 | 176.270871°, 19.606317° | 0.021595 | 100.33 Mpc | 4833 (F342W) | 896 |
| Mrk 78 | 115.673881°, 65.177072° | 0.037983 | 168.74 Mpc | 5918 (F502M) | 9122 |
| 3790 (F320W)2 | 602 | ||||
| Cygnus A | 299.868153°, 40.733916° | 0.056200 | 245.32 Mpc | 6510 (F275W) | 14148 |
| 6510 (F342W) | 48789 | ||||
| 3C 109 | 63.418208°, 11.203833° | 0.306000 | 1351.57 Mpc | 6927 (F342W) | 603 |
Notes. The five AGNs we studied, ordered by increasing distance. The coordinates are given in the J2000 equatorial system, the redshifts are heliocentric (i.e., the Earth’s rotational and orbital motions were removed from the measured velocity), and the Hubble distances use the standard ΛCDM cosmology (H0 = 67.8 km/sec/Mpc, Ωmatter = 0.308, Ωvacuum = 0.692; Planck Collaboration XIII 2016). 1: Polarization maps published by Kishimoto et al. (2002), but reprocessed with our pipeline. 2: Integrated polarization value published by Antonucci et al. (1994), Hurt et al. (1999).
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