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Black Hole Astrophysics with VLBI: Past, Present, and Future
- Workshop in honor of Professor INOUE Makoto's retirement -
March 27-29, 2017
Mitaka Campus, NAOJ, Tokyo, Japan
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Oral Presentation

Global 3-mm VLBI observations with the KVN toward bright AGN jets

Author(s): Shoko Koyama, Eduardo Ros, Thomas Krichbaum (MPIfR), Taehyun Jung (KASI), Alan Marscher (Boston Univ.)

Presenter: Shoko Koyama (Max Planck Institute for Radio Astronomy)

Relativistic outflows in AGNs are considered to be powered by super-massive black holes. Recent mm-VLBI observations reveal in an increasing number of objects a misalignment of the jet position angles between innermost and outer jet regions. A combination of the 3 antennas of the Korean VLBI Network (KVN) with the Global 3-mm VLBI Array (GMVA) enhances the uv-coverage and imaging capabilities and extends the east-west resolution with baseline length of up to 9000 km. Here, we will report on 3-mm VLBI images of 0716+714 and OJ 287, which were obtained in a GMVA plus KVN pilot experiment at 3-mm in 2012 May and 2013 Sep. We will also mention on the future prospects with a GMVA plus GLT at 3-mm.