April 16, 2025 – Kavli Institute Pre-Print Publications

WINTER on S250206dm: A near-infrared search for an electromagnetic counterpart

Posted by klaurent April 16, 2025MIT

Kavli Affiliate: Gabor Furesz | First 5 Authors: Danielle Frostig, Danielle Frostig, , , | Summary: We present near-infrared follow-up observations of the International Gravitational Wave Network (IGWN) event S250206dm with the Wide-Field Infrared Transient Explorer (WINTER). WINTER is a near-infrared time-domain survey designed for electromagnetic follow-up of gravitational-wave sources localized to $leq$300 deg$^2$. The […]

Continue..

dSphobic Dark Matter

Posted by dbos April 16, 2025April 28, 2025Chicago

Kavli Affiliate: Gordan Krnjaic | First 5 Authors: Asher Berlin, Joshua W. Foster, Dan Hooper, Gordan Krnjaic, | Summary: We present a mechanism that allows thermal relic dark matter to annihilate efficiently in the Galactic Halo and in galaxy clusters, but not in the lower-velocity environments of dwarf spheroidal (dSph) galaxies. We realize this within […]

Continue..

The Discovery of Two Quadruple Star Systems with the Second and Third Shortest Outer Periods

Posted by dbos April 16, 2025April 28, 2025MIT

Kavli Affiliate: Saul A. Rappaport | First 5 Authors: Brian P. Powell, Guillermo Torres, Veselin B. Kostov, Tamás Borkovits, Saul A. Rappaport | Summary: We present the discovery of two quadruple star systems — TIC 285853156 and TIC 392229331 — each consisting of two bound eclipsing binary stars. Among the most compact quadruples known, TIC […]

Continue..

Light WIMPs and MeV Gamma-ray Detection with COSI

Posted by klaurent April 16, 2025Tokyo

Kavli Affiliate: Tom Melia | First 5 Authors: Yu Watanabe, Yu Watanabe, , , | Summary: Light weakly interacting massive particles (WIMPs), whose masses are in the sub-GeV scale, have been attracting more attention due to the negative results searching for traditional WIMPs. The light WIMPs are expected to produce gamma rays from annihilation in […]

Continue..

The “Little Dark Dot”: Evidence for Self-Interacting Dark Matter in the Strong Lens SDSSJ0946+1006?

Posted by dbos April 16, 2025April 28, 2025Peking

Shubo Li, Ran Li, Kaihao Wang, Zixiang Jia, Xiaoyue Cao | Summary: [[{“value”:”Previous studies, based on precise modeling of a gravitationally lensing image, have identified what may be a extremely compact, dark perturber in the well-known lensing system SDSSJ0946+1006 (the "Jackpot"). Its remarkable compactness challenges the standard cold dark matter (CDM) paradigm. In this paper, […]

Continue..

The Cocytos Stream: A Disrupted Globular Cluster from our Last Major Merger?

Posted by dbos April 16, 2025April 28, 2025Stanford

Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Christian Aganze, Vedant Chandra, Risa H. Wechsler, Ting S. Li, Sergey E. Koposov | Summary: The census of stellar streams and dwarf galaxies in the Milky Way provides direct constraints on galaxy formation models and the nature of dark matter. The DESI Milky Way survey (with […]

Continue..

Towards High-Voltage Cathodes for Zinc-Ion Batteries: Discovery Pipeline and Material Design Rules

Posted by dbos April 16, 2025April 28, 2025Berkeley

Kavli Affiliate: Kristin A. Persson | First 5 Authors: Roberta Pascazio, Qian Chen, Haoming Howard Li, Aaron D. Kaplan, Kristin A. Persson | Summary: Efficient energy storage systems are crucial to address the intermittency of renewable energy sources. As multivalent batteries, Zn-ion batteries (ZIBs), while inherently low voltage, offer a promising low cost alternative to […]

Continue..