The existence of dark matter (DM) was first noticed by Zwicky in the 1930s, but its nature
remains one of the great unsolved problems of physics. A variety of observations indicate …

We present improved synthesis models of the evolving spectrum of the UV/X-ray diffuse
background, updating and extending our previous results. Five new main components are …

Gamma-ray bursts (GRBs) are the most luminous explosions in the Universe and are
powered by ultra-relativistic jets. Their prompt γ-ray emission briefly outshines the rest of the …

Attenuation of high-energy gamma-rays by pair production with ultraviolet, optical and
infrared (IR) extragalactic background light (EBL) photons provides a link between the …

The second catalog of active galactic nuclei (AGNs) detected by the Fermi Large Area
Telescope (LAT) in two years of scientific operation is presented. The second LAT AGN …

This catalog summarizes 117 high-confidence⩾ 0. 1 GeV gamma-ray pulsar detections
using three years of data acquired by the Large Area Telescope (LAT) on the Fermi satellite …

The extragalactic background light (EBL) from the far-infrared through the visible and
extending into the ultraviolet is thought to be dominated by starlight, either through direct …

FERMI LARGE AREA TELESCOPE OBSERVATIONS OF MARKARIAN 421: THE MISSING
PIECE OF ITS SPECTRAL ENERGY DISTRIBUTION - IOPscience Skip to content IOP …

TeV photons from blazars at relatively large distances, interacting with the optical–infrared
cosmic background, are efficiently converted into electron–positron pairs. The produced …

The light emitted by all galaxies over the history of the Universe produces the extragalactic
background light (EBL) at ultraviolet, optical, and infrared wavelengths. The EBL is a source …