Optical microvariability of EGRET blazars

Details Optical microvariability of EGRET blazars Optical microvariability of EGRET blazars

2002-05-17

arxiv.org/abs/astro-ph/0205311v1

Astron.Astrophys. 390 (2002) 431

Astronomy and Astrophysics

Astrophysics

16 pages. Figure 2.1-20 (sent as JPEG files) will appear only in the electronic version. Accepted for publication in Astronomy

Scientific paper

10.1051/0004-6361:20020743

We present results of a photometric CCD study of the incidence of microvariability in the optical emission of a sample of 20 blazars detected at gamma-ray energies by the EGRET instrument of the Compton Gamma-Ray Observatory. We have observed strong outbursts in some sources, but many others displayed no significant variability on timescales of hours. The typical minimum timescale results to be of ~ several hours, not tens of minutes as claimed by some authors. The duty cycle for optical intranight microvariations of gamma-ray blazars, as estimated from our observations, seems to be ~50%, lower than what is usually assumed. For night-to-night variations, instead, the duty cycle approaches to what is observed in radio-selected BL Lacs and flat-spectrum radio quasars (i.e. ~70%).

Affiliated with

Also associated with

No associations

Rating

Optical microvariability of EGRET blazars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Optical microvariability of EGRET blazars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical microvariability of EGRET blazars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-598870