We use a recent census of the Milky Way (MW) satellite galaxy population to constrain the lifetime of particle dark matter (DM). We consider two-body decaying dark matter (DDM) in which a heavy DM particle decays with lifetime τ comparable to the age of the universe to a lighter DM particle (with mass splitting ϵ) and to a dark radiation species

We report on a long-lasting, elevated gamma-ray flux state from VER J0521+211 observed by VERITAS, MAGIC, and Fermi-LAT in 2013 and 2014. The peak integral flux above 200 GeV measured with the nightly binned light curve is (8.8 ± 0.4) × 10 -7 photons m -2 s -1, or ~37% of the Crab Nebula flux. Multiwavelength observations from X-ray, UV, and

We characterize the atmosphere of the iconic giant planet HD209458 b based on a joint modeling effort of the available observations. HD 209458 b is the first planet with a reported detection of a chemical species in its atmosphere, namely Na I, and also the one with the largest number of reported species (H I, O I, C II, Mg I, Fe II, Ca I, Sc I

During the early stages of planetary formation, planets suffer severe changes in their physical and orbital properties due to internal and external forces, which also affect their primary atmospheres. The study of planets at these early stages and its comparison with the already mature planet population is crucial for a better comprehension of