Infrared variability of the BL Lacertae object OJ287 since its outburst in 1983

Gear, Walter Kieran ORCID: https://orcid.org/0000-0001-6789-6196, Robson, E. I. and Brown, L. M. J. 1986. Infrared variability of the BL Lacertae object OJ287 since its outburst in 1983. Nature 324 , pp. 546-547.

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Abstract

In early 1983, OJ 287 was seen to undergo an outburst in its optical and infrared emission. The authors have monitored the near-infrared emission since the outburst. The fluxes have fluctuated considerably, with the lowest recordings being an order of magnitude less than those measured during the outburst. The authors have found an excellent correlation between infrared flux and spectral index; as the source gets fainter the spectrum gets steeper, and vice versa. They interpret this in terms of outbursts being due to injection or reacceleration of electrons with a constant energy index which subsequently steepens as the electrons are affected by radiation losses.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Uncontrolled Keywords:	Bl Lacertae Objects, Infrared Radiation, Luminosity, Spectrum Analysis, Astronomical Models, Electron Radiation, Emission Spectra, Millimeter Waves
Publisher:	Macmillan Publishers Ltd.
ISSN:	0028-0836
Last Modified:	21 Oct 2022 09:26
URI:	https://orca.cardiff.ac.uk/id/eprint/36432

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