X-Ray Variability of BL Lac Objects : H2155-304 Amd PKS 0548-322
Abstract
X-ray emission from two BL Lacertae objects (H2155-304 and PKS 0548-322) has been studied with the High-Resolution Imager and Monitor Proportional Counter (MPC) on the Einstein Observatory. The high-spatial-resolution observations confirm the identification of these X-ray sources with the BL Lac objects and give a source size less than about 2 arcsec. Variations in the X-ray intensity and spectrum of these sources were detected over time scales of a few hours from analysis of the MPC observations.
- Publication:
-
International Cosmic Ray Conference
- Pub Date:
- August 1983
- Bibcode:
- 1983ICRC....1....3A
- Keywords:
-
- Bl Lacertae Objects;
- Light Curve;
- Spaceborne Astronomy;
- X Ray Sources;
- Heao 2;
- Image Resolution;
- Proportional Counters;
- Variability;
- X Ray Spectra;
- Astrophysics