A quasi-periodic oscillation in the blazar J1359+4011

Autor: King, O. G., Hovatta, T., Max-Moerbeck, W., Meier, D. L., Pearson, T. J., Readhead, A. C. S., Reeves, R., Richards, J. L., Shepherd, M. C.
Rok vydání: 2013
Předmět:
Druh dokumentu: Working Paper
DOI: 10.1093/mnrasl/slt125
Popis: 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.
Comment: 4 pages, 2 figures, 1 table. Accepted for publication in MNRAS Letters
Databáze: arXiv