X-ray and ultra-violet observations of Markarian 421
Abstract
We present a physical interpretation of the the dramatic spectral variability observed in the XUV band of the X-ray bright BL Lac type object Markarian 421 (Mrk421). We show that a conical relativistic jet model can adequately explain the data if the upper cut-off in the synchrotron emitting electron population has a variable radial dependence. The physical parameters in the region of the jet responsible for the bulk of the X-ray emission in Mrk421 are derived in the context of such a model.
- Publication:
-
Advances in Space Research
- Pub Date:
- 1988
- DOI:
- 10.1016/0273-1177(88)90390-0
- Bibcode:
- 1988AdSpR...8b..95G
- Keywords:
-
- Markarian Galaxies;
- Radio Jets (Astronomy);
- Relativistic Electron Beams;
- Ultraviolet Astronomy;
- X Ray Sources;
- Exosat Satellite;
- Radiant Flux Density;
- Relativistic Effects;
- Synchrotron Radiation;
- Astronomy