Variability of Bl-Lacertae Objects at X-Ray and Other Frequencies
Abstract
EXOSAT observations reveal that daily X-ray variability appears to be a common property of high luminosity BL Lac objects. Results are reported for PKS0735+178, OM280(=1147+245), OQ530(=1418+546), OV-236 (=1921-293) and OJ287(=0851+202). In OJ287, for which we have the most extensive coverage, the amplitude of variability at X-ray frequencies appears to be a factor of a few larger than at longer wavelengths.
- Publication:
-
Space Science Reviews
- Pub Date:
- April 1985
- DOI:
- 10.1007/BF00179874
- Bibcode:
- 1985SSRv...40..607P
- Keywords:
-
- Bl Lacertae Objects;
- Exosat Satellite;
- Infrared Astronomy;
- Variability;
- X Ray Astronomy;
- Electromagnetic Radiation;
- Luminosity;
- Red Shift;
- Satellite-Borne Instruments;
- Astrophysics