Observation of the growth of a magnetic vortex in the transition layer of a mildly relativistic oblique plasma shock

Observation of the Perseus galaxy cluster with the MAGIC telescopes

Observation of Ultra-high Energy Cosmic Rays

Observational Appearance of Black Hole Winds

Observational Appearance of Relativistic, Spherically Symmetric Massive Winds

Observational characteristics of accretion onto black holes

Observational Consequences of GRBs as Sources of Ultra High Energy Cosmic Rays

Observational Consequences of Topological Currents in Neutron Stars

Observational Constraints on Multi-messenger Sources of Gravitational Waves and High-energy Neutrinos

Observational constraints on the external shock prior emission hypothesis of GRBs

Observational constraints on the modeling of SN1006

Observational constraints on the nature of very short gamma-ray bursts

Observational constraints on the spin of the most massive black holes from radio observations

Observational Constraints on the Ultra-high Energy Cosmic Neutrino Flux from the Second Flight of the ANITA Experiment

Observational Evidence for a Correlation Between Jet Power and Black Hole Spin

Observational Evidence for Expansion in the SSS spectra of Novae

Observational evidence for matter propagation in accretion flows

Observational Evidence for Young Radio Galaxies are Triggered by Accretion Disk Instability

Observational evidence of dissipative photospheres in gamma-ray bursts

Observational evidences for the existence of 17.4 keV decaying degenerate sterile neutrinos near the Galactic Center