出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We report on observations of the TeV blazar Mrk 501 with the Global mm-VLBI Array at 86
GHz, using 3C345 as a calibrator. With the solutions from the calibrator and fringe tting the
data, we clearly detect a compact component even on transatlantic baselines yielding a resolution
of
0
1 0
2 mas. A jet-like feature is also visible in the same position angle found in lower
resolution images. This is one of the rst mm-VLBI images of a TeV blazar and it provides
information on the physics of the radio core on scales of a few hundreds Schwarzschild radii.
Moreover, it is an encouraging starting point for future observations at higher frequencies and/or
of weaker targets.
