Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.210..961h&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 210, Oct. 15, 1984, p. 961-977. Research supported by t
Astronomy and Astrophysics
Astronomy
40
Astronomical Photometry, Bl Lacertae Objects, Infrared Astronomy, Optical Polarization, Polarimetry, Luminous Intensity, Magnetic Field Configurations, Polarization Characteristics, Red Shift
Scientific paper
The data presented here is part of a continuing monitoring program of BL Lac objects with J, H & K photometry and polarimetry. A total of 30 BL Lac objects have now been observed photometrically. Infrared polarimetry for 24 of these objects is also available. The sample is sufficiently large to examine statistically, and several important correlations have emerged. Internight variations and wavelength dependence of polarization indicate that BL Lac objects, as a class, may be understood in terms of a relatively simple two-component model. Luminosity calculations suggest that relativistic beaming or non-spherical accretion is important in the most luminous objects. The p(lambda)-p relation makes it possible to examine the magnetic-field structure of the emitting region.
Brand Peter W. J. L.
Holmes P. A.
Impey Chris David
Williams Peredur M.
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