TXS 0128+554: A young gamma‐ray emitting active galactic nucleus with episodic jet activity

We carried out a Chandra X‐ray and multi‐frequency very long baseline array (VLBA) study of TXS 0128+554, which is associated with the Fermi γ‐ray source 4FGL J0131.2+5547. The active galactic nuclei (AGN) is unresolved in a 19.3 ks Chandra X‐ray image, and its X‐ray spectrum is well fit by a simple...

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Bibliographic Details
Published in:Astronomische Nachrichten 2021-11, Vol.342 (9-10), p.1117-1120
Main Authors: Lister, Matthew L., Homan, Dan C., Kovalev, Yuri Y., Mandal, Soham, Pushkarev, Alexander B., Siemiginowska, Aneta
Format: Article
Language:English
Subjects:
Active galactic nuclei
extragalactic radio sources
gamma‐ray astronomy
jets
radio galaxies
radio jets
radio lobes
Red shift
relativistic jets
Thermal emission
very long baseline interferometry
X‐ray active galactic nuclei
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Summary:We carried out a Chandra X‐ray and multi‐frequency very long baseline array (VLBA) study of TXS 0128+554, which is associated with the Fermi γ‐ray source 4FGL J0131.2+5547. The active galactic nuclei (AGN) is unresolved in a 19.3 ks Chandra X‐ray image, and its X‐ray spectrum is well fit by a simple absorbed power law model, with no distinguishable spectral features. Its relatively soft X‐ray spectrum compared to other compact symmetric object (CSOs) may be indicative of a thermal emission component, for which we were able to obtain an upper‐temperature limit of kT
ISSN:0004-6337
1521-3994
DOI:10.1002/asna.20210056