Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.324..546g&link_type=abstract
Nature (ISSN 0028-0836), vol. 324, Dec. 11, 1986, p. 546, 547. SERC-supported research.
Astronomy and Astrophysics
Astronomy
48
Bl Lacertae Objects, Infrared Radiation, Luminosity, Spectrum Analysis, Astronomical Models, Electron Radiation, Emission Spectra, Millimeter Waves
Scientific paper
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.
Brown M. J. L.
Gear Walter K.
Robson Ian E.
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