Decoding the giant extragalactic radio sources

被引：19

作者：

Dabhade, Pratik ^{[1
]}

Saikia, D. J. ^{[2
,3
]}

Mahato, Mousumi ^{[2
,4
]}

机构：

[1] PSL Univ, Sorbonne Univ, Coll France, Observ Paris,LERMA, F-75014 Paris, France

[2] Interuniv Ctr Astron & Astrophys IUCAA, Pune 411007, India

[3] Tezpur Univ, Dept Phys, Tezpur 784028, India

[4] Univ Tartu, Tartu Observ, Observatooriumi 1, EE-61602 Toravere, Estonia

来源：

JOURNAL OF ASTROPHYSICS AND ASTRONOMY | 2023年 / 44卷 / 01期

基金：

美国国家航空航天局;

关键词：

Giant radio sources; galaxies; active; jets; quasars; general; supermassive black holes; radio continuum; DOUBLE-DOUBLE MORPHOLOGY; MOLONGLO REFERENCE CATALOG; INVERSE-COMPTON EMISSION; SUPERMASSIVE BLACK-HOLES; SPECTRAL AGING ANALYSIS; COMPACT STEEP-SPECTRUM; ACTIVE GALACTIC NUCLEI; ENERGY COSMIC-RAYS; X-RAY; LOW-FREQUENCY;

D O I：

10.1007/s12036-022-09898-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Giant radio sources (GRSs) defined to be >0.7 Mpc are the largest single objects in the Universe and can be associated with both galaxies (GRGs) and quasars (GRQs). They are important for understanding the evolution of radio galaxies and quasars whose sizes range from pc to Mpc scales and are also valuable probes of their environment. These radio-loud active galactic nuclei (RLAGN) interact with the interstellar medium of the host galaxy on small scales and the large-scale intracluster or intergalactic medium for the GRSs. With several new and sensitive surveys over the last few years, the number of known GRSs has increased many fold, which has led a resurgence of interest in the field. This review article summarises our current understanding of these sources based on nearly five decades of research, and discusses the importance of the Square Kilometer Array (SKA) in addressing some of the outstanding questions.

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