Long-term monitoring of OJ287: new data

Details Long-term monitoring of OJ287: new data Long-term monitoring of OJ287: new data

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.459..295h&link_type=abstract

In: Exploring the gamma-ray universe. Proceedings of the Fourth INTEGRAL Workshop, 4-8 September 2000, Alicante, Spain. Editor:

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6

Blazars

Scientific paper

The blazar OJ287 has been monitored very intensively during recent years but elder data are relatively rare. On the other hand, these data are of great scientific value since there are hints for periodicity in the historical light curve of the object, which could definitely confirm the binary black hole nature of the central object for the first time. We present preliminary results of the analyses of the long-term optical behavior of the object based on Sonneberg Sky Patrol plates. The magnitude of the object has been measured on nearly 400 plates covering the time period 1928 to 1980. These results confirm the importance of scientific results for blazars and other high energy sources, which can be drawn from astronomical plate archives.

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