Christopher M. Karwin
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Articles by Christopher M. Karwin
Dark matter: How new telescopes might help us find it Original
Space Dark matter makes up a large proportion of galaxies like the Milky Way, but scientists are still figuring out what it is. New telescopes like the Rubin Observatory could help astronomers find dark matter. Image Rubin Observatory/ NOIRLab/ SLAC/ NSF/ DOE/ AURA/ B. Quint. Dark matter makes up about 85% of the universe’s matter, but cannot be seen directly Researchers have found possible dark matter hints, but the evidence is not yet conclusive.
Upcoming telescopes could shed light on dark matter – astronomers are looking for these ‘fingerprints’ of the elusive substance
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Upcoming telescopes could shed light on dark matter – astronomers are looking for these 'fingerprints' of the elusive substance
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Upcoming telescopes could shed light on dark matter – astronomers are looking for these ‘fingerprints’ of the elusive substance Original
NASA’s plans to return astronauts to the Moon through the Artemis program and ultimately send humans to Mars highlight just how far space exploration has come. Yet while the Moon and Mars remain compelling destinations filled with scientific mysteries, looking beyond our solar system raises even deeper questions about the universe itself. Among the biggest of those mysteries is matter – the substance that makes up everything around us.
Upcoming telescopes could shed light on dark matter – astronomers are looking for these ‘fingerprints’ of the elusive substance
NASA’s plans to return astronauts to the Moon through the Artemis program and ultimately send humans to Mars highlight just how far space exploration has come. Yet while the Moon and Mars remain compelling destinations filled with scientific mysteries, looking beyond our solar system raises even deeper questions about the universe itself. kAmp>@?8 E96 3:886DE @7 E9@D6 >JDE6C:6D :D >2EE6C – E96 DF3DE2?46 E92E >2<6D FA 6G6CJE9:?8 2C@F?5 FD] $FCAC:D:?8=J[ >@DE @7 E96 >2EE6C :?
Legacy analysis of dark matter annihilation from the Milky Way dwarf spheroidal galaxies with 14 years of $\mathit{Fermi}$-LAT data
Article Text (Subscription Required) Click to Expand References (Subscription Required) Click to Expand Issue Vol. 109, Iss. 6 — 15 March 2024 Access Options Buy Article » Log in with individual APS Journal Account » Log in with a username/password provided by your institution » Get access through a U.S. public or high school library » Article part of CHORUS Accepted manuscript will be available starting 19 March 2025. Download & Share × ×
Improved modeling of the discrete component of the Galactic interstellar $\ensuremath{\gamma}$-ray emission and implications for the Fermi--LAT Galactic Center excess
Abstract The aim of this work is to improve models for the γ-ray discrete or small-scale structure related to H2 interstellar gas. Reliably identifying this contribution is important to disentangle γ-ray point sources from interstellar gas, and to better characterize extended γ-ray signals. Notably, the Fermi–LAT Galactic center (GC) excess, whose origin remains unclear, might be smooth or pointlike.
Deep learning models of the discrete component of the Galactic interstellar $\ensuremath{\gamma}$-ray emission
Abstract A significant pointlike component from the small-scale (or discrete) structure in the H2 interstellar gas might be present in the Fermi-LAT data, but modeling this emission relies on observations of rare gas tracers only available in limited regions of the sky. Identifying this contribution is important to discriminate γ-ray point sources from interstellar gas, and to better characterize extended γ-ray sources.
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