The blazar OJ287 was recently seen in high MWL state (ATELs 13637, 13658, 13677, 13702), including a bright radio flare seen at Effelsberg. Swift/XRT observed a 0.3-10 keV flux of 2e-11 erg/s/cm2 on April 23, 2020. Although it is not granted that the source is or will be bright also in hard X-rays, considering the generally very interesting MWL state and the importance of having a good SED constraint in this band, a deep IBIS observation is recommended as even a UL will be very useful to constrain the inverse Compton peak. In order to maximize the IBIS exposure we choose the 5x5 dither pattern.
Publications
26Al gamma rays from the Galaxy with INTEGRAL/SPI - Pleintinger, Moritz M. M., Diehl, Roland,Siegert, Thomas,Greiner, Jochen,Krause, Martin G. H. (2023-04-01) http://ui.adsabs.harvard.edu/#abs/2023A&A...672A..53P
Temporal Coverage
2020-05-06T03:32:57Z / 2020-05-13T02:56:06Z
Version
1.0
Mission Description
The INTEGRAL (International Gamma-Ray Astrophysics Laboratory) mission, launched by the European Space Agency (ESA) on October 17, 2002, was designed to study high-energy phenomena in the universe. INTEGRAL was operating until february 2025 and it was equipped with three high-energy instruments: the Imager on Board the INTEGRAL Satellite (IBIS), the Spectrometer on INTEGRAL (SPI), and the JEM-X (Joint European Monitor for X-rays). Its Optical Monitoring Camera (OMC) provided optical V-band magnitude measurements, complementing the high-energy observations.
