Cherenkov Telescope Array ISM molecules Optical Gravitational waves GeV Relativistic processes BL Lacertae objects general X-ray Radiative transfer Astrophysics - High Energy Astrophysical Phenomena X-rays binaries Imaging Energy high Stars neutron Dark energy Horizon Performance Observatory Cosmology theory Gamma rays general Gravitational radiation detector Galaxies jets VHE Background Submillimeter ISM Density Gravitation Gamma rays galaxies TeV Gamma rays observations Magnetic field ISM structure Cherenkov counter Interferometer Neutron star Accelerator Gamma ray burst Instabilities Power spectrum Cherenkov counter atmosphere Binaries close Black hole physics Dark matter Shock waves Gamma-rays galaxies Methods data analysis Radiation mechanisms non-thermal Magnetohydrodynamics MHD Astrochemistry Signature AGN Astrophysics - Astrophysics of Galaxies ISM jets and outflows Gamma ray emission Galaxies Seyfert Star Photon ISM clouds GLAST Flux Gamma ray HESS Spectral ISM abundances MAGIC Cosmic rays Galaxy Orbit Supernova Hydrodynamics Astroparticle physics Astrophysics VIRGO Particle acceleration Sensitivity Cosmology Blazar Synchrotron Methods statistical General Relativity and Quantum Cosmology Gamma ray VHE Large-scale structure of Universe Pulsar Equation of state Gravitational radiation Redshift ISM supernova remnants Acceleration of particles Electron Black hole Radio lines ISM Galaxies active General relativity Numerical calculations Accretion Neutron stars Structure Accretion disks Pulsars general Methods numerical