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Coordinated Multifrequency Observations of OJ 287 and MK 421 (March 1993)

Published online by Cambridge University Press:  19 July 2016

A. Sillanpää ,
L.O. Takalo ,
E. Valtaoja ,
H. Teräsranta ,
Yu.S. Efimov ,
N. Shakhovskoy ,
J. Heidt  and
H. Bock
A. Sillanpää
Affiliation:
Tuorla Observatory, Tuorla, 21500 Piikkiö, Finland
L.O. Takalo
Affiliation:
Tuorla Observatory, Tuorla, 21500 Piikkiö, Finland
E. Valtaoja
Affiliation:
Metsähovi Radio Research Station, Finland
H. Teräsranta
Affiliation:
Metsähovi Radio Research Station, Finland
Yu.S. Efimov
Affiliation:
Crimean Astrophysical Observatory, Ukraine
N. Shakhovskoy
Affiliation:
Crimean Astrophysical Observatory, Ukraine
J. Heidt
Affiliation:
Landessternwarte Königstuhl, Germany
H. Bock
Affiliation:
Landessternwarte Königstuhl, Germany

Extract

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We present some very preliminary results of the multifrequency microvariability campaign of two BL Lac objects OJ 287 and Mk 421 carried out mainly during four days in March 1993. During these four days also IUE was observing these blazars. In this poster we present only a small part of the whole data: radio observations at Metsähovi, CCD observations on La Palma and Heidelberg and UBVRI photopolarimetric observations at Crimea. Because of the very bad global weather conditions and also because of the faintnes of OJ 287 our optical observations were very limited.

Type
Poster Contributions: Variability
Information
Symposium - International Astronomical Union , Volume 159: Multi-Wavelength Continuum Emission of AGN , 1994 , pp. 404
Copyright
Copyright © Kluwer 1994