Beamed X-rays in radio-loud quasars.
Abstract
The X-ray spectra of radio-loud quasars are considerably steeper in the ROSAT PSPC band (0.1-2.4 keV) than in the slightly harder Einstein IPC band (0.3-3.5 keV). In order to explain this fact Jackson et al. (1993) simulated PSPC and IPC observations of a beaming model spectrum (Browne & Murphy 1987) plus a soft power law component. Whereas they succeeded to reproduce the observed steep ROSAT spectra, their simulated Einstein spectra were too steep. They therefore concluded that the concept of the beaming model might be wrong. With the help of a PSPC observation of 3C273 we show that the assumed shape of the soft component could be the origin of this failure.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- July 1994
- Bibcode:
- 1994A&A...287..433B
- Keywords:
-
- Astronomical Spectroscopy;
- Quasars;
- Spectrum Analysis;
- X Ray Astronomy;
- X Ray Spectra;
- Components;
- Heao 2;
- Rosat Mission;
- Spectral Bands;
- Astronomy;
- GALAXIES: JETS;
- QUASARS:GENERAL;
- QUASARS: INDIVIDUAL: 3C273;
- X-RAYS: GALAXIES