The BL Lac object OJ 287 (z=0.306) is a highly variable blazar showing pseudo-periodic outbursts every 11-12 years, and monitored in the radio-optical bandssince many years. We propose here one further (4th) EPIC-pn observation of OJ287 as continuation of our long-term multifrequency programme to be performed inthese important years for the source, aiming to observe the X-ray and MWbehaviour of OJ 287 in different brightness stages and possibly during the nextexpected outburst. Ground-based multifrequency campaigns and monitoring arealready ongoing (thanks also to the WEBT consortium), joint with VLBA/VLBIobservation.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2008-04-22T17:13:34Z/2008-04-23T08:43:49Z
Version
17.56_20190403_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
European Space Agency, Dr Stefano Ciprini, 2009, 'XMM-Newton multifrequency variability of the peculiar blazar OJ 287', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-5lbbq4q
