The Propagation of Jets in High-Energy Peaked BL Lacertae Objects

Details The Propagation of Jets in High-Energy Peaked BL Lacertae Objects The Propagation of Jets in High-Energy Peaked BL Lacertae Objects

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..340..116r&link_type=abstract

Future Directions in High Resolution Astronomy: The 10th Anniversary of the VLBA, ASP Conference Proceedings, Vol. 340. Edited

Astronomy and Astrophysics

Astronomy

Scientific paper

We present VLBA, EVN, MERLIN and VLA observations that are part of a program to study the parsec-scale radio structure of a sample of high-energy-peaked BL Lacs (HBLs). The sample was chosen to span the range of logarithmic X-ray to radio flux ratios observed in HBLs for comparison to the more widely studied low-energy-peaked BL Lacs (LBLs). Like most LBLs, our HBL sample shows parsec-scale, core-jet morphologies and compact, complex kiloparsec-scale morphologies. Some objects have well collimated jets whereas others show broad, diffuse jets. Interestingly, those objects with collimated jets show evidence for bending of the jet 10-20pc from the core, at the same point as decollimation. Furthermore, the well-collimated, inner portion of the jet is usually more aligned with the kpc-scale jet. This may a result of interaction of the jet with the surrounding medium tens of parsecs from the core, which may temporarily distort the jet trajectory for short timescales but leave the long-term behavior of the jet unaffected. Below we present maps of four of the objects in our sample, illustrating the complex behavior seen in these objects.

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