Multifrequency observations of the superluminal quasar 3C 345
Attention is given to the continuum properties of the superluminal quasar 3C 345, on the basis of radio, optical, IR, and X-ray frequency monitorings, as well as by means of simultaneous multifrequency spectra extending from the radio through the X-ray bands. Radio outbursts, which appear to follow...
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| Veröffentlicht in: | The Astrophysical journal 1986-02, Vol.301 (2), p.708-726 |
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| container_end_page | 726 |
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| container_issue | 2 |
| container_start_page | 708 |
| container_title | The Astrophysical journal |
| container_volume | 301 |
| creator | Bregman, J. N. Glassgold, A. E. Huggins, P. J. Neugebauer, G. Soifer, B. T. Matthews, K. Roellig, T. P. L. Bregman, J. D. Witteborn, F. C. Lester, D. F. |
| description | Attention is given to the continuum properties of the superluminal quasar 3C 345, on the basis of radio, optical, IR, and X-ray frequency monitorings, as well as by means of simultaneous multifrequency spectra extending from the radio through the X-ray bands. Radio outbursts, which appear to follow IR-optical outbursts by about one year, first occur at the highest frequencies, as expected from optical depth effects; the peak flux is nevertheless often reached at several frequencies at once. The beginning of outbursts, as defined by mm-measurements, corresponds to the appearance of the three known 'superluminal' components. An increase in the X-ray flux during 1979-1980 corresponds to increased radio flux, while the IR flux changes in the opposite sense. |
| doi_str_mv | 10.1086/163938 |
| format | Article |
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| ispartof | The Astrophysical journal, 1986-02, Vol.301 (2), p.708-726 |
| issn | 0004-637X 1538-4357 |
| language | eng |
| recordid | cdi_crossref_primary_10_1086_163938 |
| source | NASA Technical Reports Server; Alma/SFX Local Collection |
| subjects | Astronomy Earth, ocean, space Exact sciences and technology Quasars Quasars. Active or peculiar galaxies, objects, and systems Stellar systems. Galactic and extragalactic objects and systems. The universe |
| title | Multifrequency observations of the superluminal quasar 3C 345 |
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