1321+045: A compact steep-spectrum radio source in a cool-core galaxy cluster

被引：0
|
作者：
O'Sullivan, Ewan [1 ]
Kunert-Bajraszewska, Magdalena [2 ]
Siemiginowska, Aneta [1 ]
Burke, Douglas J. [1 ]
Combes, Francoise [3 ,4 ]
Salome, Philippe [3 ]
Giacintucci, Simona [5 ]
机构：
[1] Harvard & Smithsonian, Ctr Astrophys, Cambridge, MA USA
[2] NCU, Fac Phys Astron & Informat, Inst Astron, Torun, Poland
[3] Sorbonne Univ, PSL Univ, CNRS, LERMA,Observ Paris, Paris, France
[4] Coll France, Paris, France
[5] Naval Res Lab, Washington, DC USA
来源：
ASTRONOMISCHE NACHRICHTEN | 2021年 / 342卷 / 9-10期
基金：
美国国家航空航天局;
关键词：
galaxies: active; galaxies: clusters: individual (MaxBCG J201.08197+04.31863); galaxies: jets; radio continuum: galaxies; X-rays: galaxies: clusters; ACTIVE GALACTIC NUCLEI; EVOLUTION; JETS;
D O I：
10.1002/asna.20210035
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Cluster-central gigahertz peak and compact steep-spectrum (CSS) sources offer an opportunity to study the earliest phases of active galactic nucleus (AGN) feedback, but few have yet been examined in detail. We present results from radio and X-ray observations of 1321+045, a CSS source in a 4.4 keV cluster at z=0.263. The cluster has a strongly cooling core, and disturbances from a minor cluster merger may have triggered a period of jet activity which formed the 16 kpc radio lobes 2.0-0.2+0.3Myr ago. However, new very long baseline array (VLBA) imaging shows a similar to 20 pc jet on a different projected axis, which is probably only a few hundred years old. We consider possible histories for the system, with either one or two periods of jet activity. While this single system is informative, a broader study of the youngest cluster-central radio sources is desirable.
引用
收藏
页码：1155 / 1159
页数：5
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