Eileen T. Meyer, Giovanni Fossati, Markos Georganopoulos, Matthew L. Lister
In examining a select sample of over 200 blazars of known jet kinetic power
(L_kin) and well-characterized SEDs, we found (Meyer et al., 2011) that
Intermediate synchrotron-peaking (ISP) blazars may have lower gamma-ray output
than high synchrotron-peaking (HSP) blazars of similar L_kin, consistent with
our hypothesis that ISP blazars are less-beamed versions of HSP blazars, rather
than a distinct population. Further, by using the radio core dominance as a
measure of relative beaming, we find that gamma-ray luminosity depends on
beaming in a consistent way for blazars ranging over all jet kinetic powers
(10^42 - 10^46 ergs/s). We re-examine the gamma-ray properties of this core
sample of blazars using the 1-year LAT catalog (Abdo et al., 2010). We find
that for weak jets, the ratio of inverse Compton to synchrotron emission
remains constant with increased beaming, consistent with an SSC model for the
jet emission, while the most powerful jets show a strong increase in Compton
dominance with orientation, consistent with an external Compton (EC) emission
model.
View original:
http://arxiv.org/abs/1111.6490
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