Bibcode
DOI
de Diego, J. A.; Dultzin-Hacyan, D.; Ramirez, A.; Benitez, E.
Bibliographical reference
Astrophysical Journal v.501, p.69
Advertised on:
7
1998
Citations
66
Refereed citations
58
Description
We have performed photometric optical observations of a sample of 17
core-dominated radio-loud quasars (CRLQs) and 17 radio-quiet quasars
(RQQs). The aims were to confirm the existence of microvariations in
strictly radio-quiet objects and to compare the properties of the
variations in both types of quasars. Great care was taken to avoid
selection effects and spurious biases in the samples. We present a new
observational and statistical procedure for searching for
microvariability, based on the analysis of variance. The results show
that microvariations in RQQs may be as frequent as in CRLQs. The
implications for the physical models for microvariations are briefly
discussed.