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 …

The birth of gravitational wave astronomy was triggered by the first detection of a signal
produced by the merger of two compact objects (also known as a compact binary …

The European Particle Physics Strategy Update (EPPSU) process takes a bottom-up
approach, whereby the community is first invited to submit proposals (also called inputs) for …

The Square Kilometre Array (SKA) is a planned large radio interferometer designed to
operate over a wide range of frequencies, and with an order of magnitude greater sensitivity …

We present a directed search for continuous gravitational wave (CW) signals emitted by
spinning neutron stars located in the inner parsecs of the Galactic Center (GC). Compelling …

This report summarizes the findings of the CF1 Topical Subgroup to Snowmass 2021, which
was focused on particle dark matter. One of the most important scientific goals of the next …

The Galactic center excess (GCE) remains one of the most intriguing discoveries from the
Fermi Large Area Telescope (LAT) observations. We revisit the characteristics of the GCE by …

We model the accretion of gas onto a population of massive primordial black holes in the
Milky Way and compare the predicted radio and x-ray emission with observational data. We …

A bstract We investigate a possible realization of pseudo-Nambu-Goldstone (pNG) dark
matter in the framework of a singlet-extended 2 Higgs doublet model (S2HDM). pNG dark …

The extended excess toward the Galactic Center (GC) in gamma rays inferred from Fermi-
LAT observations has been interpreted as being due to dark matter (DM) annihilation. Here …