Understanding the physical mechanisms that control galaxy formation is a fundamental
challenge in contemporary astrophysics. Recent advances in the field of astrophysical …

We survey our understanding of classical novae—nonterminal, thermonuclear eruptions on
the surfaces of white dwarfs in binary systems. The recent and unexpected discovery of GeV …

The present white paper is submitted as part of the “Snowmass” process to help inform the
long-term plans of the United States Department of Energy and the National Science …

Names: CTA Consortium (Organization) Title: Science with the Cherenkov Telescope
Array/by The CTA Consortium. Description: New Jersey: World Scientific, 2018.| Includes …

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 …

Radio observations prove the existence of relativistic particles and magnetic field associated
with the intra-cluster-medium (ICM) through the presence of extended synchrotron emission …

Recurrent novae are repeating thermonuclear explosions in the outer layers of white dwarfs,
due to the accretion of fresh material from a binary companion. The shock generated when …

A critical review of the standard paradigm for the origin of Galactic cosmic rays (CRs) is
presented. Recent measurements of local and far-away CRs reveal unexpected behaviors …

Abstract One century ago Viktor Hess carried out several balloon flights that led him to
conclude that the penetrating radiation responsible for the discharge of electroscopes was of …

The origin of cosmic rays in our Galaxy remains a subject of active debate. While supernova
remnant (SNR) shocks are often invoked as the sites of acceleration, it is now widely …