Galaxies active Accretion Galaxies ISM Galaxies photometry ISM clouds Gamma rays galaxies Gamma rays general Infrared ISM Accretion disks Stars massive Cosmic background radiation Infrared galaxies Shock waves Galaxies structure Polarization HII regions Galaxies interactions Extinction Large-scale structure of Universe GLAST Galaxies clusters general Gamma ray burst Galaxy Stars rotation Supernovae general Gravitational waves Cosmology Submillimeter galaxies ISM general Dark matter Galaxy Astrophysics Dark energy Stars evolution Catalogs Gamma ray Supernova ISM structure Sensitivity Cosmic rays Radio continuum galaxies Methods data analysis Astrophysics Galaxies high-redshift Galaxies clusters intracluster medium Gravitational lensing weak Cherenkov Telescope Array Black hole physics Stars neutron ISM jets and outflows Dust Instabilities Asteroseismology Methods numerical Pulsar ISM molecules Galaxies starburst Stars formation Stars oscillations Galaxies jets Astrophysics - Astrophysics of Galaxies Gamma ray emission Techniques image processing Cosmology theory Spectral Acceleration of particles Cosmological model Pulsars general Magnetohydrodynamics MHD Hydrodynamics Structure Galaxies dwarf Observatory Techniques photometric Gamma-ray burst general Cosmology observations Infrared stars Surveys Protoplanetary disks Radiation mechanisms non-thermal Binaries general ISM supernova remnants Stars interiors X-rays binaries Stars protostars X-rays galaxies clusters ISM kinematics and dynamics Galaxies star formation Submillimeter ISM Galaxies formation Methods observational Methods statistical Turbulence Waves Accretion discs Cosmological parameters Gravitation Magellanic Clouds Galaxies evolution X-rays general Radiative transfer