The 160-min. periodicity in the optical and X-ray observations of extragalactic objects

Details The 160-min. periodicity in the optical and X-ray observations of extragalactic objects The 160-min. periodicity in the optical and X-ray observations of extragalactic objects

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990crasb.310..743k&link_type=abstract

Academie des Sciences, Comptes Rendus, Serie II - Mecanique, Physique, Chimie, Sciences de la Terre et de l'Univers (ISSN 0764-4

Astronomy and Astrophysics

Astronomy

7

Periodic Variations, Quasars, Seyfert Galaxies, X Ray Astronomy, X Ray Sources, Active Galactic Nuclei, Solar Oscillations

Scientific paper

One and the same, statistically reliable, period of about 160 min is found in the optical and/or X-ray emission from the Seyfert galaxies NGC 4051 and NGC 4151 and the quasar 3C 273. Within the limits of errors it coincides well with the period of global oscillations of the sun (160.010 min). Thus the problem of the 160-min oscillations appears to be very complicated and intriguing.

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