70 AIM, UMR 7158, CEA/DRF, CNRS, Université Paris Diderot, Irfu/Service d'Astrophysique,
Centre de Saclay, FR-91191 Gif-sur-Yvette, France

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 …

Gamma-ray bursts (GRBs) are brief flashes of γ-rays and are considered to be the most
energetic explosive phenomena in the Universe. The emission from GRBs comprises a short …

Abstract The Large Area Telescope (LAT) aboard the Fermi spacecraft routinely observes
high-energy emission from gamma-ray bursts (GRBs). Here we present the second catalog …

Long-duration γ-ray bursts (GRBs) are the most luminous sources of electromagnetic
radiation known in the Universe. They arise from outflows of plasma with velocities near the …

A bstract We compute the decay spectrum for dark matter (DM) with masses above the scale
of electroweak symmetry breaking, all the way to the Planck scale. For an arbitrary hard …

One of the most promising ways to probe intergalactic magnetic fields (IGMFs) is through
gamma rays produced in electromagnetic cascades initiated by high-energy gamma rays or …

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 …

Although supernova remnants remain the main suspects as sources of Galactic cosmic rays
up to the knee, the supernova paradigm still has many loose ends. The weakest point in this …

Blazars research is one of the hot topics of contemporary extragalactic astrophysics. That is
because these sources are the most abundant type of extragalactic γ-ray sources and are …