The First VLBI Detection of a Spiral DRAGN Core
Minnie Y. Mao (1, 3), Jay M. Blanchard (2), Frazer Owen (3),, Lor\'ant O. Sjouwerman (3), Vikram Singh (2, 4), Anna Scaife (1), Zsolt, Paragi (2), Ray P. Norris (5, 6), Emmanuel Momjian (3), Gia Johnson (3 and, 7)

TL;DR
This paper reports the first VLBI detection of a spiral DRAGN core in galaxy 0313-192, confirming an active nucleus and providing insights into jet orientation and galaxy structure, challenging existing galaxy formation models.
Contribution
First VLBI observation of a spiral DRAGN core, confirming active nucleus and jet alignment, challenging standard galaxy formation theories.
Findings
Detected the core at multiple VLBI bands, confirming active nucleus.
Estimated jet inclination angle to be less than 72 degrees.
Found jet components aligned with larger-scale radio source.
Abstract
The existence of spiral DRAGNs challenges standard galaxy formation theories. We present the first observation of 0313192, the archetypal spiral DRAGN, at VLBI resolutions. Spiral DRAGNs are Double Radio Sources Associated with Galactic Nuclei (DRAGNs) that are hosted by spiral galaxies. 0313192 is an edge-on spiral galaxy that appears to host a 360 kpc double-lobed radio source. The core of this galaxy is clearly detected at L, S, and X-bands using the VLBA, signifying an ongoing active nucleus in the galaxy. This rules out the possibility that the spiral DRAGN is merely a chance alignment. The radio core has LW Hz. Radio components are detected to the South-West of the core, but there are no detections of a counterjet. Assuming a symmetric, relativistic jet, we estimate an upper limit to the inclination angle of …
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