activity
19972026
most citedA massive binary black-hole system in OJ287 and a test of general relativity

416 citations · 2.1k across the 34 of their papers we have counts for

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astro-ph2001★ 196 cited

Optical and radio variability of the BL Lac object AO 0235+16: a possible 5-6 year periodicity

C. M. Raiteri, M. Villata, H. D. Aller +33

New optical and radio data on the BL Lacertae object AO 0235+16 have been collected in the last four years by a wide international collaboration, which confirm the intense activity…