How Compact are the Cores of AGN? Sub-Parsec Scale Imaging with VLBI at Millimeter Wavelengths

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dc.creatorKrichbaum, T. P.
dc.creatorLee, S. S.
dc.creatorLobanov, A. P.
dc.creatorMarscher, A. P.
dc.creatorGurwell, M. A.
dc.date2007-08-29
dc.date.accessioned2026-07-07T08:26:21Z
dc.date.available2026-07-07T08:26:21Z
dc.descriptionWe study the most central regions of AGN jets with an angular resolution of tens of micro-arcseconds using VLBI at millimeter wavelengths (mm-VLBI). We present and discuss a new 86 GHz VLBI survey of compact radio sources. We show new high dynamic range images of two nearby radio galaxies (3C 120 and M87). In M87 the size of the compact VLBI core (the jet base) is < 15 Schwarzschild radii. Future mm-VLBI observations at 1 mm and shorter wavelengths should lead to images of galactic and extragalactic radio sources with a spatial resolution down to a few Schwarzschild radii of the central super massive black holes. To achieve this, the participation of large and sensitive millimeter and sub-millimeter telescopes in VLBI is essential. Owing to their high sensitivity existing and planned phased interferometers like the IRAM Plateau de Bure interferometer, CARMA, the SMA and ALMA could play an important role.
dc.description8 pages, 4 figures, 2 tables. To appear in: "Extragalactic Jets - Theory and Observation from Radio to Gamma-Ray", eds. T.A. Rector & D.S. De Young, proceedings of a conference held in Girdwood, Alaska, on May 21-24, 2007, ASP Conf. Series, 2007, in press
dc.identifierhttps://arxiv.org/abs/0708.3915
dc.identifierhttp://arxiv.org/abs/0708.3915
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/136911
dc.subjectAstrophysics
dc.titleHow Compact are the Cores of AGN? Sub-Parsec Scale Imaging with VLBI at Millimeter Wavelengths
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