The first γ-ray line originating from outside the Solar System that was ever detected is the
511 keV emission from positron annihilation in the Galaxy. Despite 30 years of intense …

Non-thermal particles and high-energy radiation can play a role in the dynamical processes
in star-forming regions and provide an important piece of the multiwavelength observational …

Galactic cosmic rays reach energies of at least a few petaelectronvolts (of the order of 1015
electronvolts). This implies that our Galaxy contains petaelectronvolt accelerators …

The possible gamma-ray excess in the inner Galaxy and the Galactic center (GC) suggested
by Fermi-LAT observations has triggered a large number of studies. It has been interpreted …

The newly launched X-ray satellite, eROSITA, has recently revealed two gigantic bubbles
extending to~ 80° above and below the Galactic Centre. The morphology of these 'eROSITA …

We analyze the first two years of data from the Fermi Gamma Ray Space Telescope from the
direction of the inner 10° around the Galactic Center with the intention of constraining, or …

No, within a broad class of scenarios. Gravitational-wave (GW) astronomy will open a new
window on compact objects such as neutron stars and black holes (BHs). It is often stated …

The conversion of gas into stars is a fundamental process in astrophysics and cosmology.
Stars are known to form from the gravitational collapse of dense clumps in interstellar …

Axions may be produced in abundance inside stellar cores and then convert into observable
x rays in the Galactic magnetic fields. We focus on the Quintuplet and Westerlund 1 super …

The star formation rate (SFR) in the Central Molecular Zone (CMZ, ie the central 500 pc) of
the Milky Way is lower by a factor of≥ 10 than expected for the substantial amount of dense …