Optical Variability of the Radio Source J 1128+5925 -- II. Confirmation of its Optical Quietness

Details Optical Variability of the Radio Source J 1128+5925 -- II. Confirmation of its Optical Quietness Optical Variability of the Radio Source J 1128+5925 -- II. Confirmation of its Optical Quietness

2009-01-09

arxiv.org/abs/0901.1184v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

10 pages, 5 figures, accepted by AJ

Scientific paper

10.1088/0004-6256/137/4/3961

The source J 1128+5925 was found recently to show strong intraday variability at radio wavelengths and its radio variability may come from interstellar scintillation. In optical, the object was quiet in our 2007 monitoring session. Here we report the results of our new optical monitoring of this source in 2008. In addition to confirm our 2007 results, that the object did not display any clear variation on timescales from hour--day to month, we provide evidence that the object does not vary on timescale of one year, and it is probably intrinsically quiet in optical domain. Its very different behaviors in optical and radio regimes can be naturally explained if its strong radio variability comes from interstellar scintillation.

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