Kavli Affiliate: Hirosi Ooguri | First 5 Authors: Nathan Benjamin, Christoph A. Keller, Hirosi Ooguri, Ida G. Zadeh, | Summary: Motivated by the search for rational points in moduli spaces of two-dimensional conformal field theories, we investigate how points with enhanced symmetry algebras are distributed there. We first study the bosonic sigma-model with $S^1$ target […]
Kavli Affiliate: Michael D. Gladders | First 5 Authors: Gourav Khullar, Katya Gozman, Jason J. Lin, Michael N. Martinez, Owen S. Matthews Acuña | Summary: We report the discovery of COOL J1241+2219, a strongly-lensed galaxy at redshift $z$=5.043$pm$0.002 with observed magnitude $z_{AB}=20.47$, lensed by a moderate-mass galaxy cluster at $z$=1.001$pm$0.001. COOL J1241+2219 is the brightest […]
Kavli Affiliate: David N. Spergel | First 5 Authors: Stephon Alexander, Evan McDonough, David N. Spergel, , | Summary: We consider the implications of an ultra-light fermionic dark matter candidate that carries baryon number. This naturally arises if dark matter has a small charge under standard model baryon number whilst having an asymmetry equal and […]
Kavli Affiliate: Albert Stebbins | First 5 Authors: Fengquan Wu, Jixia Li, Shifan Zuo, Xuelei Chen, Santanu Das | Summary: The Tianlai Dish Pathfinder Array is a radio interferometer designed to test techniques for 21~cm intensity mapping in the post-reionization universe as a means for measuring large-scale cosmic structure. It performs drift scans of the […]
Kavli Affiliate: Linhua Jiang | First 5 Authors: Junehyoung Jeon, Rogier Windhorst, Seth H. Cohen, Rolf A. Jansen, Brent M. Smith | Summary: The reionization of the hydrogen in the Universe is thought to have completed by redshift $zsimeq5.5-6$. To probe this era, galaxy observations in the Subaru Deep Field (SDF) have identified more than […]
Kavli Affiliate: Christopher J. Burke | First 5 Authors: Douglas A. Caldwell, Peter Tenenbaum, Joseph D. Twicken, Jon M. Jenkins, Eric Ting | Summary: We report the delivery to the Mikulski Archive for Space Telescopes of target pixel and light curve files for up to 160,000 targets selected from full-frame images (FFI) for each TESS […]
Kavli Affiliate: Renxin Xu | First 5 Authors: Hua Feng, Hong Li, Xiangyun Long, Ronaldo Bellazzini, Enrico Costa | Summary: The Crab nebula is so far the only celestial object with a statistically significant detection in soft x-ray polarimetry, a window that has not been explored in astronomy since the 1970s. However, soft x-ray polarimetry […]
Kavli Affiliate: Max Tegmark | First 5 Authors: Ziming Liu, Max Tegmark, , , | Summary: We present AI Poincar’e, a machine learning algorithm for auto-discovering conserved quantities using trajectory data from unknown dynamical systems. We test it on five Hamiltonian systems, including the gravitational 3-body problem, and find that it discovers not only all […]
Kavli Affiliate: Aaron Roodman | First 5 Authors: Angela Chen, Dragan Huterer, Sujeong Lee, Agnès Ferté, Noah Weaverdyck | Summary: We study a phenomenological class of models where dark matter converts to dark radiation in the low redshift epoch. This class of models, dubbed DMDR, characterizes the evolution of comoving dark matter density with two […]
Kavli Affiliate: George Efstathiou | First 5 Authors: Marta Spinelli, Gianni Bernardi, Hugh Garsden, Lincoln J. Greehill, Anastasia Fialkov | Summary: Total-power radiometry with individual meter-wave antennas is a potentially effective way to study the Cosmic Dawn ($zsim20$) through measurement of sky brightness arising from the $21$~cm transition of neutral hydrogen, provided this can be […]