Abstract
Since the first TeV blazar Markarian (Mrk) 421 was detected in 1992, the number of established TeV γ-ray emitting BL Lac objects has grown to 6, with redshifts ranging from 0.031 (Mrk 421) to 0.129 (H 1426 + 428). The intensive study of these sources has had a major impact on our understanding of the blazar phenomenon. The most notable observational results have been extremely fast large amplitude flux and spectral variability on hour time scales, and a pronounced X-ray - TeV γ-ray flux correlation. In this paper, we discuss recent observational results and report on progress in their theoretical interpretation.
| Original language | English |
|---|---|
| Pages (from-to) | 367-373 |
| Number of pages | 7 |
| Journal | New Astronomy Reviews |
| Volume | 48 |
| Issue number | 5-6 |
| DOIs | |
| State | Published - Apr 2004 |
Keywords
- Galaxies: BL Lacertae objects
- Galaxies: Jets
- γ-rays: Observations
- γ-rays: Theory