| タイトル | Two multifrequency observations of 3C 371 |
| 著者（英） | Ku, W. H.-M.; Neugebauer, G.; Hodge, P. E.; Aller, H. D.; Rudy, R. J.; Puschell, J. J.; Matthews, K.; Miller, H. R.; Soifer, B. T.; Aller, M. F. |
| 著者所属（英） | California Inst. of Tech.|California Univ.|Arizona Univ.|Georgia State Univ.|Michigan Univ.|Columbia Univ. |
| 発行日 | 1984-03-15 |
| 言語 | eng |
| 内容記述 | Observations of 3C371 made at frequencies from the radio to the ultraviolet and coordinated during two short time intervals separated by 3 months are presented. Also presented are 1 keV X-ray flux densities measured at a different time. The multifrequency measurements indicate spectral steepening at visual wavelengths, and that an extrapolation of the ultraviolet continuum falls below the X-ray data. The infrared through X-ray data is explained as relativistically beamed synchrotron self-Compton emission, and source parameters are derived for two possible models. The present ultraviolet spectra both show strong Lyman-alpha emission at the same redshift as weak optical emission lines reported previously. Production of these lines by recombination of gas, after its ionization by the ultraviolet to X-ray continuum radiation, is favored as an explanation. C IV and N V absorption lines are tentatively identified in one ultraviolet spectrum, which, if real, suggest the presence of a hot (about 300,000 K) gaseous halo in 3C 371. |
| NASA分類 | ASTRONOMY |
| レポートNO | 84A29181 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/398710 |
|
