Cross-Section Continuity of Definitions of Angular Momentum

Kavli Affiliate: Robert M. Wald | First 5 Authors: Po-Ning Chen, Daniel Paraizo, Robert M. Wald, Mu-Tao Wang, Ye-Kai Wang | Summary: We introduce a notion of "cross-section continuity" as a criterion for the viability of definitions of angular momentum, $J$, at null infinity: If a sequence of cross-sections, ${mathcal C}_n$, of null infinity converges […]


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Long-Exposure NuSTAR Constraints on Decaying Dark Matter in the Galactic Halo

Kavli Affiliate: Shunsaku Horiuchi | First 5 Authors: Brandon M. Roach, Steven Rossland, Kenny C. Y. Ng, Kerstin Perez, John F. Beacom | Summary: We present two complementary NuSTAR x-ray searches for keV-scale dark matter decaying to mono-energetic photons in the Milky Way halo. In the first, we utilize the known intensity pattern of unfocused […]


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Chemical Abundances of the Typhon Stellar Stream

Kavli Affiliate: Alexander P. Ji | First 5 Authors: Alexander P. Ji, Rohan P. Naidu, Kaley Brauer, Yuan-Sen Ting, Joshua D. Simon | Summary: We present the first high-resolution chemical abundances of seven stars in the recently discovered high-energy dwarf galaxy stream Typhon. Typhon stars have apocenters reaching to ${gtrsim}100$ kpc, making this the first […]


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Rhymes in primes

Kavli Affiliate: Andrei Okounkov | First 5 Authors: Andrei Okounkov, , , , | Summary: This is a popular article about the work of James Maynard, 2022 Fields medalist. | Search Query: ArXiv Query: search_query=au:”Andrei Okounkov”&id_list=&start=0&max_results=3 Read More


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