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arXiv · 1309.1158

A quasi-periodic oscillation in the blazar J1359+4011

O. G. King·T. Hovatta·W. Max-Moerbeck·D. L. Meier·T. J. Pearson·A. C. S. Readhead·R. Reeves·J. L. Richards·M. C. Shepherd
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Abstract

The OVRO 40-m telescope has been monitoring the 15 GHz radio flux density of over 1200 blazars since 2008. The 15 GHz light curve of the flat spectrum radio quasar J1359+4011 shows a strong and persistent quasi-periodic oscillation. The time-scale of the oscillation varies between 120 and 150 days over a $\sim4$ year time span. We interpret this as the active galactic nucleus mass-scaled analog of low-frequency quasi-periodic oscillations from Galactic microquasars, or as evidence of modulation of the accretion flow by thermal instabilites in the "inner" accretion disc.

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O. G. King, T. Hovatta, W. Max-Moerbeck, D. L. Meier, T. J. Pearson, A. C. S. Readhead, R. Reeves, J. L. Richards, M. C. Shepherd. 2013-09-04. A quasi-periodic oscillation in the blazar J1359+4011. https://doi.org/10.1093/mnrasl%2Fslt125

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