Anomalous emission-line behaviour: evidence for disc winds?

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• Dr. Michael Goad (Leicester)
• Thursday 10 March 2022, 16:00-17:00
• Hoyle Lecture Theatre (sign-up needed) + ONLINE - Details will be sent by email.

If you have a question about this talk, please contact Nicolas Laporte.

In 2014, the nearby Seyfert 1.5 galaxy NGC 5548 was the subject of the most intensive space and ground-based multiwavelength monitoring campaign ever undertaken. AGN STORM : the Active Galactic Nuclei Space Telescope and Optical Reverberation Mapping campaign, revealed a number of surprises, forcing us to reconsider much of what we thought we knew about the central regions of AGN . Chief among these was the unexpected appearance of anomalous emission-line behaviour starting midway through the campaign. Here, I review the work that led to the discovery of the anomaly, its likely origin, and implications for future models of the central regions of AGN .

This talk is part of the Institute of Astronomy Colloquia series.

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