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Simultaneous Long Term Millimetre and Sub-millimetre Monitoring of Blazars

Published online by Cambridge University Press:  19 July 2016

S.J. Litchfield ,
J.A. Stevens  and
E.I. Robson
S.J. Litchfield
Affiliation:
Centre for Astrophysics, University of Central Lancashire, Preston PR1 2HE, UK
J.A. Stevens
Affiliation:
Centre for Astrophysics, University of Central Lancashire, Preston PR1 2HE, UK
E.I. Robson
Affiliation:
Centre for Astrophysics, University of Central Lancashire, Preston PR1 2HE, UK

Extract

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We have monitored a sample of 17 blazars at 375, 270, 230 and 150 GHz with the James Clerk Maxwell Telescope (JCMT). We also have 230, 150, 90 GHz data from IRAM and SEST, and 37, 22 GHz from Metsähovi Radio Research Station, Finland. The data shows a range of flaring time-scales, from months for e.g. 0851+202 to years in the case of e.g. 1641+399. Superimposed shorter time-scale variability (‘flickering’ behaviour) is seen in many sources from our sample. We make no conclusive statements on whether BL Lacs as a class are preferentially variable on shorter time-scales. All sources show variability on many time-scales regardless of classification.

Type
Poster Contributions: Continuum studies
Information
Symposium - International Astronomical Union , Volume 159: Multi-Wavelength Continuum Emission of AGN , 1994 , pp. 328
Copyright
Copyright © Kluwer 1994 

References

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