Abstract:PKS 2004−447 is a narrow-line Seyfert 1 (NLS1) harbouring a relativistic jet with γ-ray emission. On 2019 October 25, the Fermi-Large Area Telescope captured a γ-ray flare from this source, offering a chance to study the broad-line region (BLR) and jet during such violent events. This can provide insights into the BLR structure and jet interactions, which are important for active galactic nuclei (AGN) and host galaxy co-evolution. We report X-shooter observations of enhancements in the broad line components of… Show more
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