Multiepoch ~2-43GHz VLBI monitoring obs. of OJ 287 Virtual Observatory Resource

Authors
  1. Yuan Q.
  2. Zhang M.
  3. Liu X.
  4. Jiang P.F.
  5. Kokhirova G.I.
  6. Published by
    CDS
Abstract

We collected the archival data of blazar OJ 287 from heterogeneous very long baseline interferometry monitoring programs at 2.3, 8.6, 15, and 43GHz. The data reduction and observable extraction of those multiband, multiepoch observations are batch-processed consistently with our automated pipeline. We present the multivariate correlation analysis on the observables at each band. We employ the cross-correlation function to search the correlations and the Monte Carlo technique to verify the certainty of correlations. Several correlations are found. The foremost findings are the correlations between the core flux density and the jet position angles on different scales, which validated the plausible predictions of the jet with precession characteristics. Meanwhile, there is a variation in the offset between the core electric vector position angle and the inner-jet position angle over time at 15 and 43 GHz.

Keywords
  1. bl-lacertae-objects
  2. interferometry
  3. radio-sources
Bibliographic source Bibcode
2023ApJ...949...20Y
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ivo://CDS.VizieR/J/ApJ/949/20

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History

2025-07-21T13:39:45Z
Resource record created
2025-07-21T13:39:45Z
Created
2025-08-01T08:20:05Z
Updated

Contact

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