Bibcode
Kidger, M. R.; Gonzalez-Perez, J. N.; de Diego, J. A.; Zapatero-Osorio, M. R.; Hammersley, P. L.; Cepa, J.; Devaney, N.; Sahu, K.; Vidal, I.
Bibliographical reference
Astronomy and Astrophysics Supplement, v.113, p.431
Advertised on:
11
1995
Citations
18
Refereed citations
15
Description
Extensive infrared observations were taken of OJ 287 in 1993/94 as part
of an on-going monitoring campaign of this object started in 1988. The
data show that this blazar reached very high levels in the infrared in
Fall'94 after a continuous increase in brightness through the winter and
spring of 1993/94. The infrared fluxes registered at maximum were a
factor of 3 higher than at any other time since our monitoring began.
Visible monitoring shows a similar outburst, although no significant
activity has been observed in the radio flux curves at any frequency
from 4.8 to 230GHz, nor is it obvious that an outburst was seen in
X-rays. We find that there is no significant change in the spectral
energy distribution in the range from 0.45 to 2.2 microns as the
brightness increases by over two magnitudes.