The exploration of the universe has recently entered a new era thanks to the multi-
messenger paradigm, characterized by a continuous increase in the quantity and quality of …

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 …

We present the first catalog of TeV gamma-ray sources realized with data from the newly
completed High Altitude Water Cherenkov Observatory (HAWC). It is the most sensitive wide …

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 …

We present the first joint analysis of gamma-ray data from the MAGIC Cherenkov telescopes
and the Fermi Large Area Telescope (LAT) to search for gamma-ray signals from dark matter …

Classical novae are cataclysmic binary star systems in which the matter of a companion star
is accreted on a white dwarf,. Accumulation of hydrogen in a layer eventually causes a …

Introduced in 1998 to attempt a first unified view of the broad-band emission properties of
blazars, the blazar sequence has been extensively used in the past 25 years to guide …

Aims. We investigate the extension of the very high-energy spectral tail of the Crab Pulsar at
energies above 400 GeV. Methods. We analyzed~ 320 h of good-quality Crab data obtained …

Long-duration γ-ray bursts (GRBs) originate from ultra-relativistic jets launched from the
collapsing cores of dying massive stars. They are characterized by an initial phase of bright …

We present a measurement of the extragalactic background light (EBL) based on a joint
likelihood analysis of 32 gamma-ray spectra for 12 blazars in the redshift range z= 0.03 …