High Energy X-Ray Observations of BL Lacertae Objects
Abstract
Several BL Lacertae objects were observed at energies above 25 keV using the scintillation telescopes on OSO-8 and Ariel-5. With the possible exception of Markaryan 421, only upper limits were obtained for the existence of X-ray emission in the energy ranges 25-60 and 60-130 keV. These results impose constraints on any flattening in the X-ray spectrum of BL Lac objects as predicted by at least one model for their X-ray emission.
- Publication:
-
Astrophysical Letters
- Pub Date:
- 1979
- Bibcode:
- 1979ApL....20...63C
- Keywords:
-
- Bl Lacertae Objects;
- Spaceborne Astronomy;
- X Ray Astronomy;
- Ariel 5 Satellite;
- Energy Spectra;
- Oso-8;
- Photons;
- Spaceborne Telescopes;
- Astrophysics