FRIIb radio sources, ambient gas densities, and clusters of galaxies
FRIIb radio sources axe a special subset of all classical double radio sources with particularly simple radio bridge structures. At low radio frequencies, the surface brightness across the ridge-line of the source is accurately reproduced by accounting for adiabatic expansion in the lateral directio...
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| Format: | Conference item |
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2002
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| _version_ | 1826295580857466880 |
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| author | Daly, R Guerra, E Chester, M |
| author_facet | Daly, R Guerra, E Chester, M |
| author_sort | Daly, R |
| collection | OXFORD |
| description | FRIIb radio sources axe a special subset of all classical double radio sources with particularly simple radio bridge structures. At low radio frequencies, the surface brightness across the ridge-line of the source is accurately reproduced by accounting for adiabatic expansion in the lateral direction by an amount indicated by the observed change in the width of the radio bridge as a function of position. Thus, the physics of FRIIb sources is quite simple. The radio properties of an FRIIb source may provide a useful probe of the pressure, density, and temperature of gas surrounding the radio source. Estimates of the ambient gas density obtained from considerations of the rain-pressure confinement of the forward region of FRIIb radio sources axe discussed here. Typical ambient gas densities and the composite density profile indicate that the sources lie in gaseous environments very much like the cores of galaxy clusters. Some evolution of the core gas density and radius with redshift axe suggested by the data. |
| first_indexed | 2024-03-07T04:03:14Z |
| format | Conference item |
| id | oxford-uuid:c54c48e8-a367-43f6-9765-87c2c6aa1e67 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T04:03:14Z |
| publishDate | 2002 |
| record_format | dspace |
| spelling | oxford-uuid:c54c48e8-a367-43f6-9765-87c2c6aa1e672022-03-27T06:29:47ZFRIIb radio sources, ambient gas densities, and clusters of galaxiesConference itemhttp://purl.org/coar/resource_type/c_5794uuid:c54c48e8-a367-43f6-9765-87c2c6aa1e67Symplectic Elements at Oxford2002Daly, RGuerra, EChester, MFRIIb radio sources axe a special subset of all classical double radio sources with particularly simple radio bridge structures. At low radio frequencies, the surface brightness across the ridge-line of the source is accurately reproduced by accounting for adiabatic expansion in the lateral direction by an amount indicated by the observed change in the width of the radio bridge as a function of position. Thus, the physics of FRIIb sources is quite simple. The radio properties of an FRIIb source may provide a useful probe of the pressure, density, and temperature of gas surrounding the radio source. Estimates of the ambient gas density obtained from considerations of the rain-pressure confinement of the forward region of FRIIb radio sources axe discussed here. Typical ambient gas densities and the composite density profile indicate that the sources lie in gaseous environments very much like the cores of galaxy clusters. Some evolution of the core gas density and radius with redshift axe suggested by the data. |
| spellingShingle | Daly, R Guerra, E Chester, M FRIIb radio sources, ambient gas densities, and clusters of galaxies |
| title | FRIIb radio sources, ambient gas densities, and clusters of galaxies |
| title_full | FRIIb radio sources, ambient gas densities, and clusters of galaxies |
| title_fullStr | FRIIb radio sources, ambient gas densities, and clusters of galaxies |
| title_full_unstemmed | FRIIb radio sources, ambient gas densities, and clusters of galaxies |
| title_short | FRIIb radio sources, ambient gas densities, and clusters of galaxies |
| title_sort | friib radio sources ambient gas densities and clusters of galaxies |
| work_keys_str_mv | AT dalyr friibradiosourcesambientgasdensitiesandclustersofgalaxies AT guerrae friibradiosourcesambientgasdensitiesandclustersofgalaxies AT chesterm friibradiosourcesambientgasdensitiesandclustersofgalaxies |