OJ+287 Visual Observations
OJ+287 unfiltered CCD, V and R band
Much has been written about this remarkable object OJ+287 - a binary black hole system with a period of ~12 years. I have been fortunate enough to be involved with several pro-am observing projects of OJ+287 since the 1990's, resulting in the following papers published as co-author...
Intensive Monitoring of OJ287. Astronomy & Astrophysics July 2000
The structure of the October/November 2005 outburst in OJ287 and the precessing Black Hole model. Astronomy & Astrophysics, 477 2 (2008) 407-412
A massive binary black hole system in OJ287 and a test of general relativity. NATURE (letters) Vol 452 April 17 2008 pg 851
Tidally induced outbursts in OJ 287 during 2005-2008. ApJ 698 (2009) 781-785
Primary black hole spin in OJ287 as determined by the General Relativity centenary flare. ApJ,819, L37