Limits on thermal plasma in the lobes of the radio galaxies 3C 79 and 3C 379.1

S. R Spangler; T Sakurai

doi:10.1086/163505

Back

Limits on thermal plasma in the lobes of the radio galaxies 3C 79 and 3C 379.1

Journal article

Peer reviewed

Limits on thermal plasma in the lobes of the radio galaxies 3C 79 and 3C 379.1

S. R Spangler and T Sakurai

The Astrophysical journal, Vol.297(1), pp.84-89

1985

DOI: 10.1086/163505

View Online

Abstract

Dual-frequency VLA polarimetric observations of the radio galaxies 3C 79 and 3C 379.1 show remarkably small Faraday rotation gradients across most or all of both sources. The measured rms difference between the 6 and 20 cm polarization position angles is as low as 2° for portions of 3C 379.1. These measurements are used to place limits on internal Faraday rotation and thus on the thermal plasma density in the radio-emitting lobes. The upper limits to the thermal density are ≡4×10-5cm-3 for both 3C 79 and 3C 379.1.

Astronomy

Earth, ocean, space

Exact sciences and technology

Radio sources

Stellar systems. Galactic and extragalactic objects and systems. The universe

Unidentified sources and radiation outside the solar system

Details

Title: Subtitle: Limits on thermal plasma in the lobes of the radio galaxies 3C 79 and 3C 379.1
Creators: S. R Spangler - Univ. Iowa, dep. physics astronomy
T Sakurai - Univ. Iowa, dep. physics astronomy
Resource Type: Journal article
Publication Details: The Astrophysical journal, Vol.297(1), pp.84-89
DOI: 10.1086/163505
ISSN: 0004-637X
eISSN: 1538-4357
Publisher: University of Chicago Press
Language: English
Date published: 1985
Academic Unit: Physics and Astronomy
Record Identifier: 9984199701302771

Metrics

19 Record Views

14 Times Cited - Web of Science