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Low-energy antinuclei measurements for background-free indirect dark matter searches and PBH signatures
Tsuguo Aramaki, Ilias Cholis, Philip von Doetinchem +7
Light low-energy cosmic ray antinuclei constitute powerful probes for detecting dark matter or other sources of new physics in our Galaxy. This ASTRA Initiative Mission Concept rev…
A Multimessenger Analysis of the High-Energy Milky Way: Source Populations Contribute Significantly to IceCube's Galactic Neutrino Flux
Alisha Roberts, Ilias Cholis, Dan Hooper +1
We perform a joint analysis of the high-energy neutrino emission observed from the Galactic Plane by IceCube and the diffuse ultra-high-energy gamma-ray emission measured by LHAASO…
Scrutinizing the Isotropic Gamma-Ray Background in Search of Dark Matter
Ilias Cholis, Iason Krommydas
The isotropic gamma-ray background (IGRB), measured by the Fermi Large Area Telescope, is the result of several classes of extragalactic astrophysical sources. Those sources includ…
Observing Signals of Spectral Features in the Cosmic-Ray Positrons and Electrons from Milky Way Pulsars
Ilias Cholis, Thressay Hoover
The Alpha Magnetic Spectrometer (AMS-02) has provided unprecedented precision measurements of the electron and positron cosmic-ray fluxes and the positron fraction spectrum. At the…
Revisiting GeV-scale annihilating dark matter with the AMS-02 positron fraction
Iason Krommydas, Ilias Cholis
Antimatter cosmic-rays are used to probe new phenomena in physics, including dark matter annihilation. We use the cosmic-ray positron fraction spectrum by the Alpha Magnetic Spectr…
A Phantom Menace: On the Morphology of the Galactic Center Excess
Samuel D. McDermott, Yi-Ming Zhong, Ilias Cholis
The characteristics of the Galactic Center Excess (GCE) emission observed in gamma-ray energies -- especially the morphology of the GCE -- remain a hotly debated subject. The manne…