| タイトル | Spectroscopy of two BL Lacertae objects |
| 著者（英） | Kondo, Y.; Hackney, K. R. H.; Holt, S.; Urry, C. M.; Mushotzky, R. F.; Hackney, R. L. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1982-01-01 |
| 言語 | eng |
| 内容記述 | As part of a continuing program of observations of Bl Lac objects, the IUE cameras were used to look at PKS 0548-322 and PKS 2155-304. The spectra obtained are well described by power laws with alpha approximately 0.8 in each case. For each object, one set of simultaneous X-ray data was obtained using the solid state spectrometer (SSS) on the Einstein Observatory. These data show that the power law extends from ultraviolet frequencies into the X-ray regime, although it steepens slightly for PKS 2155-304. Both objects are variable in the ultraviolet and/or X-ray; in neither case does the small spectral variability appear to correlate with the intensity variability. The overall spectrum of these objects is interpreted in light of a synchrotron self-Compton model with relativistic beaming. |
| NASA分類 | ASTRONOMY |
| レポートNO | 82N31182 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/413722 |
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