Landing page for project EG116

The Seyfert 1 galaxy, KUG 1141+371 has been steadily increasing in X-ray flux since 2007, exhibiting variability behavior similar to the state transitions observed in X-ray binaries and may be experiencing a rapid boost of mass accretion (Jiang et al. 2021). If the X-ray binary analogy holds then the appearance of jet emission can also be expected in KUG 1141+371. While the source was not detected in FIRST in 1994, it appears in VLASS in 2019 and at 22-GHz in a VLA observation in 2018 at a mJy-level. High-resolution VLBI observations can reveal whether the radio emission originates from a compact feature at the center of the host galaxy of KUG 1141+371, and whether it is from a newly started jet in the source. The e-MERLIN can map the 100-mas scale structure, and characterize the radio emission even if no mas-scale feature can be detected. Therefore we propose 1.7-GHz and 5-GHz EVN+e-MERLIN observations to ascertain whether the radio emission is non-thermal and originates from the AGN, and to characterize its mas- and 100-mas scale structure.

This data is part of the archive of VLBI data maintained by JIVE on behalf of the EVN, a network of radio telescopes located primarily in Europe and Asia, with additional antennas in South Africa. The EVN archive itself has the DOI https://doi.org/10.17616/R3Z197