Astrophysics – Page 76 – Kavli Institute Pre-Print Publications

The Atacama Cosmology Telescope: Reionization kSZ trispectrum methodology and limits

Posted by dbos May 2, 2024Tokyo

Kavli Affiliate: Toshiya Namikawa | First 5 Authors: Niall MacCrann, Frank J. Qu, Toshiya Namikawa, Boris Bolliet, Hongbo Cai | Summary: Patchy reionization generates kinematic Sunyaev-Zeldovich (kSZ) anisotropies in the cosmic microwave background (CMB). Large-scale velocity perturbations along the line of sight modulate the small-scale kSZ power spectrum, leading to a trispectrum (or four-point function) […]

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Introducing the DREAMS Project: DaRk mattEr and Astrophysics with Machine learning and Simulations

Posted by dbos May 1, 2024MIT

Kavli Affiliate: Lina Necib | First 5 Authors: Jonah C. Rose, Paul Torrey, Francisco Villaescusa-Navarro, Mariangela Lisanti, Tri Nguyen | Summary: We introduce the DREAMS project, an innovative approach to understanding the astrophysical implications of alternative dark matter models and their effects on galaxy formation and evolution. The DREAMS project will ultimately comprise thousands of […]

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Universal Bounds on CFT Distance Conjecture

Posted by dbos May 1, 2024Tokyo

Kavli Affiliate: Hirosi Ooguri | First 5 Authors: Hirosi Ooguri, Yifan Wang, , , | Summary: For any unitary conformal field theory in two dimensions with the central charge $c$, we prove that, if there is a nontrivial primary operator whose conformal dimension $Delta$ vanishes in some limit on the conformal manifold, the Zamolodchikov distance […]

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Universal Bounds on CFT Distance Conjecture

Posted by dbos May 1, 2024Tokyo

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JWST meets Chandra: a large population of Compton thick, feedback-free, and X-ray weak AGN, with a sprinkle of SNe

Posted by dbos May 1, 2024May 13, 2024Cambridge

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Roberto Maiolino, Guido Risaliti, Matilde Signorini, Bartolomeo Trefoloni, Ignas Juodzbalis | Summary: We investigate the X-ray properties of a large sample of 71 broad line and narrow line AGN at 2<z<11 discovered by JWST in the GOODS fields, which have the deepest Chandra observations ever obtained. Despite […]

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Transmon Qubit Constraints on Dark Matter-Nucleon Scattering

Posted by dbos April 30, 2024May 13, 2024Stanford

Kavli Affiliate: Noah Kurinsky | First 5 Authors: Anirban Das, Noah Kurinsky, Rebecca K. Leane, , | Summary: We recently pointed out that power measurements of single quasiparticle devices can be used to detect dark matter. These devices have the lowest known energy thresholds, far surpassing standard direct detection experiments, requiring energy deposition above only […]

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Transmon Qubit Constraints on Dark Matter-Nucleon Scattering

Posted by dbos April 30, 2024Stanford

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Transmon Qubit Constraints on Dark Matter-Nucleon Scattering

Posted by dbos April 30, 2024Stanford

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NICER Discovery of the Accreting Millisecond X-ray Pulsar SRGA J144459.2-604207

Posted by dbos April 30, 2024May 13, 2024MIT

Kavli Affiliate: Deepto Chakrabarty | First 5 Authors: Mason Ng, Paul S. Ray, Andrea Sanna, Tod E. Strohmayer, Alessandro Papitto | Summary: We present the discovery, with the Neutron Star Interior Composition Explorer (NICER), of the 447.9 Hz accreting millisecond X-ray pulsar (AMXP) SRGA J144459.2-604207, which underwent a four-week long outburst starting on 2024 February […]

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NICER Discovery that SRGA J144459.2-604207 is an Accreting Millisecond X-ray Pulsar

Posted by dbos April 30, 2024MIT

Kavli Affiliate: Deepto Chakrabarty | First 5 Authors: Mason Ng, Paul S. Ray, Andrea Sanna, Tod E. Strohmayer, Alessandro Papitto | Summary: We present the discovery, with the Neutron Star Interior Composition Explorer (NICER), that SRGA J144459.2-604207 is a 447.9 Hz accreting millisecond X-ray pulsar (AMXP), which underwent a four-week long outburst starting on 2024 […]

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