The table below shows the most common keywords used by the author. The letters in brackets after some keywords denote if the keyword corresponds to Solar Physics (S) or Heliospheric Physics (H).
| Keyword
| Occurrences
|
|---|
| Astrophysics - High Energy Astrophysical Phenomena [S]
| 27
|
| Galaxies: Active
| 15
|
| Galaxies: Jets
| 15
|
| Radiation Mechanisms: Non-thermal
| 13
|
| Astrophysics - Astrophysics Of Galaxies
| 6
|
| BL Lacertae Objects: General
| 5
|
| Gamma-ray Sources
| 5
|
| High Energy Astrophysics
| 4
|
| Neutrino Astronomy
| 4
|
| Active Galactic Nuclei
| 3
|
| Blazars
| 3
|
| Methods: Statistical
| 2
|
| Galaxy Jets
| 2
|
| Galaxies: Accretion Disks
| 2
|
| Relativistic Jets
| 2
|
| High-energy Cosmic Radiation
| 2
|
| BL Lacertae Objects
| 2
|
| Gamma-rays: Galaxies
| 2
|
| Sun: Gamma-rays
| 1
|
| Spectral Energy Distribution
| 1
|
| Radio Loud Quasars
| 1
|
| Quasars: Supermassive Black Holes
| 1
|
| Quasars: Individual: PKS 1502+106
| 1
|
| Quasars: Individual (3C 454.3)
| 1
|
| Quasars: General
| 1
|
| Polarization
| 1
|
| Non-thermal Radiation Sources
| 1
|
| Neutrinos
| 1
|
| Methods: Data Analysis
| 1
|
| Magnetic Fields
| 1
|
| Gamma-ray Burst: General
| 1
|
| Galaxy Photometry
| 1
|
| Galaxies: Nuclei
| 1
|
| Flat-spectrum Radio Quasars
| 1
|
| BL Lacertae Objects: Individual: PKS J2134-0153
| 1
|
| Acceleration Of Particles
| 1
|