The Diversity in the Optical Variability of Radio-loud Quasars
Abstract
We present optical monitor of 142 radio-loud quasars with 10-15 day cadence for about 1.5 years through LCO, seven of which are appended with data from SDSS Stripe 82, with the overall goal to characterize the variability of individual objects. Combining with the photometric and spectroscopic data in SDSS database, we obtain the light curves for individual quasars spanning $\simeq$ 10 yr. Our various analysis of this dataset did reveal the presence of the diversity of quasars' variability, through structure function and the comparison with damped random walk (DRW) model. While the majority of the sample are consistent with DRW model, six quasars are found to have the abnormal shape of individual SFs and nine show great deviations from DRW model on short timescales ($\le 1$ yr), implying that the accretion physics of certain radio-loud quasars may differ from that of the radio-quiet ones.
- Publication:
-
American Astronomical Society Meeting Abstracts #233
- Pub Date:
- January 2019
- Bibcode:
- 2019AAS...23345402Z