TXS 0128+554: A young gamma‑ray emitting active galactic nucleus with episodic jet activity Lister, Matthew L. ; Homan, Dan C. ; Kovalev, Yuri Y. ; Mandal, Soham ; Pushkarev, Alexander B. ; Siemiginowska, Aneta Abstract Publication: Astronomische Nachrichten Pub Date: November 2021 DOI: 10.1002/asna.20210056 Bibcode: 2021AN....342.1117L