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Title: Plasma phenomenology in astrophysical systems: Radio-sources and jets

We review the plasma phenomenology in the astrophysical sources which show appreciable radio emissions, namely Radio-Jets from Pulsars, Microquasars, Quasars, and Radio-Active Galaxies. A description of their basic features is presented, then we discuss in some details the links between their morphology and the mechanisms that lead to the different radio-emissions, investigating especially the role played by the plasma configurations surrounding compact objects (Neutron Stars, Black Holes). For the sake of completeness, we briefly mention observational techniques and detectors, whose structure set them apart from other astrophysical instruments. The fundamental ideas concerning angular momentum transport across plasma accretion disks—together with the disk-source-jet coupling problem—are discussed, by stressing their successes and their shortcomings. An alternative scenario is then inferred, based on a parallelism between astrophysical and laboratory plasma configurations, where small-scale structures can be found. We will focus our attention on the morphology of the radio-jets, on their coupling with the accretion disks and on the possible triggering phenomena, viewed as profiles of plasma instabilities.
Authors:
 [1] ;  [2] ;  [3]
  1. ENEA–C.R. Frascati, U.T. Fus. (FUSMAG Lab), Via Enrico Fermi 45, (00044) Frascati (Italy)
  2. (00185) Roma (Italy)
  3. Physics Department, “Sapienza” University of Rome, Piazzale Aldo Moro 5, (00185) Roma (Italy)
Publication Date:
OSTI Identifier:
22299945
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 6; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCRETION DISKS; ANGULAR MOMENTUM; ASTROPHYSICS; BLACK HOLES; EMISSION; GALAXIES; NEUTRON STARS; PLASMA; PLASMA INSTABILITY; PULSARS; QUASARS