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标题：Millimeter VLBI detection of the TeV blazar Markarian 501
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作者：M. Giroletti ; G. Giovannini
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2006
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.