Open Access
Table 1
Acronyms used in the text.
| Acronym | Meaning |
|---|---|
| ATNF | Australian telescope national facility |
| CXB | Cosmic X-ray background |
| AGN | Active galactic nuclei |
| BLL | BL-Lac object |
| BZG | Galaxy Dominated Blazars |
| BZU | Blazar of uncertain type |
| CV | Cataclysmic variable |
| FSRQ | Flat spectrum radio quasar |
| HERG | High excitation radio galaxy |
| LERG | Low excitation radio galaxy |
| LINER | Low-ionization nuclear emission-line region galaxy |
| NOV | Novae |
| PN | Planetary nebulae |
| PSR | Pulsar |
| QSO | Quasi-stellar objects |
| RDG | Radio galaxy |
| SNR | Supernovae remnant |
| WD | White dwarf |
| XBONG | X-ray bright optically normal galaxy |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.