BATSE monitoring of BLAZARS
A.J. Dean, M.J. Westmore, R. Gurriaran, F. Lei, A. Malizia
L. Bassani, J.B. Stephens
Abstract
Since the time coverage of BATSE is nearly complete, this instrument
offers a unique opportunity to monitor highly variable sources
such as blazars in a relatively unexplored energy band (20-100 keV).
Here we present some examples of this capability which is particularly
useful during period of flaring activity.
In particular, results are presented for the BL Lacs MKN501 and
PKS 2005-489 during high energy flares first detected by other
instruments. The potential of using BATSE to study sources
over long periods of time and to follow the emission before and after the
flare is clearly demonstrated. 4 years of monitoring the QSO 71.07 in the
hard X-ray band is also presented which indicates as well observing
enhanced hard X-ray emission during
an optical flare.
BATSE also allowed the extraction of spectra during bright states. These
spectra can be used together with the variability study to
evaluate
and constrain emission mechanisms.
File translated from TEX by TTH, version 2.32.
On 16 Jul 1999, 09:18.