دورية أكاديمية

No Small-scale Radio Jets Here: Multiepoch Observations of Radio Continuum Structures in NGC 1068 with the VLBA

التفاصيل البيبلوغرافية
العنوان: No Small-scale Radio Jets Here: Multiepoch Observations of Radio Continuum Structures in NGC 1068 with the VLBA
المؤلفون: Travis C. Fischer, Megan C. Johnson, Nathan J. Secrest, D. Michael Crenshaw, Steven B. Kraemer
المصدر: The Astrophysical Journal, Vol 953, Iss 1, p 87 (2023)
بيانات النشر: IOP Publishing, 2023.
سنة النشر: 2023
المجموعة: LCC:Astrophysics
مصطلحات موضوعية: Active galactic nuclei, Radio astronomy, AGN host galaxies, Astrophysics, QB460-466
الوصف: We present recent Very Long Baseline Array (VLBA) 5 GHz radio observations of the nearby, luminous Seyfert 2 galaxy NGC 1068 for comparison to similar VLBA observations made on 1997 April 26. By cross-correlating the positions of emitting regions across both epochs, we find that spatially resolved extranuclear radio knots in this system have subrelativistic transverse speeds ( v ≲0.1 c ). We discuss sources of the observed knots and how the radio emission relates to additional phases of gas in the central ∼150 pc of this system. We suggest that the most likely explanation for the observed emission is synchrotron radiation formed by shocked host media via interactions between active galactic nucleus winds and the host environment.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1538-4357
Relation: https://doaj.org/toc/1538-4357
DOI: 10.3847/1538-4357/ace1f0
URL الوصول: https://doaj.org/article/c9425dc8800848ce8711d4446f16ab95
رقم الأكسشن: edsdoj.9425dc8800848ce8711d4446f16ab95
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:15384357
DOI:10.3847/1538-4357/ace1f0