First GMVA observations with the upgraded NOEMA facility: VLBI imaging of BL Lacertae in a flaring state
Dae-Won Kim,
Michael Janssen,
Thomas P. Krichbaum
et al.
Abstract:We analyze a single-epoch Global mm-VLBI Array (GMVA) observation of the blazar BL Lacertae (BL Lac) at 86 GHz from April 2021. The participation of the upgraded, phased Northern Extended Millimetre Array (NOEMA) adds additional sensitivity to the GMVA, which has facilitated the imaging of BL Lac during an unprecedentedly strong γ-ray flare. We aim to explore the nature of the inner subparsec jet of BL Lac and the impact of the NOEMA participation in the observation. For the data reduction, we employed two adv… Show more
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