Extended X-ray emission in PKS 1718-649
Beuchert T, Rodriguez-Ardila A, Moss VA, Schulz R, Kadler M, Wilms J, Angioni R, Callingham JR, Gräfe C, Krauss F, Kreikenbohm A, Langejahn M, Leiter K, Maccagni FM, Mueller C, Ojha R, Ros E, Tingay SJ (2018)
Publication Status: Published
Publication Type: Journal article
Publication year: 2018
Journal
Publisher: EDP SCIENCES S A
Book Volume: 612
Article Number: ARTN L4
DOI: 10.1051/0004-6361/201833064
Abstract
PKS 1718 649 is one of the closest and most comprehensively studied candidates of a young active galactic nucleus (AGN) that is still embedded in its optical host galaxy. The compact radio structure, with a maximal extent of a few parsecs, makes it a member of the group of compact symmetric objects (CSO). Its environment imposes a turnover of the radio synchrotron spectrum towards lower frequencies, also classifying PKS 1718-649 as gigahertz-peaked radio spectrum (GPS) source. Its close proximity has allowed the first detection of extended X-ray emission in a GPS/CSO source with Chandra that is for the most part unrelated to nuclear feedback. However, not much is known about the nature of this emission. By co-adding all archival Chandra data and complementing these datasets with the large effective area of XMM-Newton, we are able to study the detailed physics of the environment of PKS 1718-649. Not only can we confirm that the bulk of the less than or similar to kiloparsec-scale environment emits in the soft X-rays, but we also identify the emitting gas to form a hot, collisionally ionized medium. While the feedback of the central AGN still seems to be constrained to the inner few parsecs, we argue that supernovae are capable of producing the observed large-scale X-ray emission at a rate inferred from its estimated star formation rate.
Authors with CRIS profile
Jörn Wilms
Professur für Astronomie und Astrophysik
Christina Gräfe
Dr.Karl-Remeis-Sternwarte Bamberg, Astronomisches Institut
Involved external institutions
Curtin University
Australia (AU)
Max-Planck-Institut für Radioastronomie / Max Planck Institute for Radio Astronomy
Germany (DE)
National Aeronautics and Space Administration (NASA)
United States (USA) (US)
INAF-Osservatorio Astronomico di Cagliari
Italy (IT)
Julius-Maximilians-Universität Würzburg
Germany (DE)
University of Amsterdam
Netherlands (NL)
Netherlands Institute for Radio Astronomy
Netherlands (NL)
Ministry of Science, Technology, Innovation and Communication (MCTIC) / Ministério da Ciência, Tecnologia, Inovações e Comunicações
Brazil (BR)
Australia (AU)
Max-Planck-Institut für Radioastronomie / Max Planck Institute for Radio Astronomy
Germany (DE)
National Aeronautics and Space Administration (NASA)
United States (USA) (US)
INAF-Osservatorio Astronomico di Cagliari
Italy (IT)
Julius-Maximilians-Universität Würzburg
Germany (DE)
University of Amsterdam
Netherlands (NL)
Netherlands Institute for Radio Astronomy
Netherlands (NL)
Ministry of Science, Technology, Innovation and Communication (MCTIC) / Ministério da Ciência, Tecnologia, Inovações e Comunicações
Brazil (BR)
How to cite
APA:
Beuchert, T., Rodriguez-Ardila, A., Moss, V.A., Schulz, R., Kadler, M., Wilms, J.,... Tingay, S.J. (2018). Extended X-ray emission in PKS 1718-649. Astronomy & Astrophysics, 612. https://dx.doi.org/10.1051/0004-6361/201833064
MLA:
Beuchert, T., et al. "Extended X-ray emission in PKS 1718-649." Astronomy & Astrophysics 612 (2018).
BibTeX: Download