First Star Formation in the Presence of Primordial Magnetic Fields

Kavli Affiliate: Tom Abel | First 5 Authors: Daegene Koh, Tom Abel, Karsten Jedamzik, , | Summary: It has been recently claimed that primordial magnetic fields could relieve the cosmological Hubble tension. We consider the impact of such fields on the formation of the first cosmological objects, mini-halos forming stars, for present-day field strengths in […]


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Enhancing the sensitivity of the LUX-ZEPLIN (LZ) dark matter experiment to low energy signals

Kavli Affiliate: T. A. Shutt | First 5 Authors: D. S. Akerib, A. K. Al Musalhi, S. K. Alsum, C. S. Amarasinghe, A. Ames | Summary: Two-phase xenon detectors, such as that at the core of the forthcoming LZ dark matter experiment, use photomultiplier tubes to sense the primary (S1) and secondary (S2) scintillation signals […]


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Determining Dark Matter-Electron Scattering Rates from the Dielectric Function

Kavli Affiliate: Noah Kurinsky | First 5 Authors: Yonit Hochberg, Yonatan Kahn, Noah Kurinsky, Benjamin V. Lehmann, To Chin Yu | Summary: We show that the rate for dark matter-electron scattering in an arbitrary material is determined by an experimentally measurable quantity, the complex dielectric function, for any dark matter interaction that couples to electron […]


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Determining Dark Matter-Electron Scattering Rates from the Dielectric Function

Kavli Affiliate: Noah Kurinsky | First 5 Authors: Yonit Hochberg, Yonatan Kahn, Noah Kurinsky, Benjamin V. Lehmann, To Chin Yu | Summary: We show that the rate for dark matter-electron scattering in an arbitrary material is determined by an experimentally measurable quantity, the complex dielectric function, for any dark matter interaction that couples to electron […]


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Dark Matter Constraints from a Unified Analysis of Strong Gravitational Lenses and Milky Way Satellite Galaxies

Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Ethan O. Nadler, Simon Birrer, Daniel Gilman, Risa H. Wechsler, Xiaolong Du | Summary: Joint analyses of small-scale cosmological structure probes are relatively unexplored and promise to advance measurements of microphysical dark matter properties using heterogeneous data. Here, we present a multidimensional analysis of dark matter […]


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CO excitation, molecular gas density and interstellar radiation field in local and high-redshift galaxies

Kavli Affiliate: John Silverman | First 5 Authors: Daizhong Liu, Emanuele Daddi, Eva Schinnerer, Toshiki Saito, Adam Leroy | Summary: We study the Carbon Monoxide (CO) excitation, mean molecular gas density and interstellar radiation field (ISRF) intensity in a comprehensive sample of 76 galaxies from local to high redshift (z~0-6), selected based on detections of […]


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NICER Discovery of Millisecond X-ray Pulsations and an Ultracompact Orbit in IGR J17494-3030

Kavli Affiliate: Deepto Chakrabarty | First 5 Authors: Mason Ng, Paul S. Ray, Peter Bult, Deepto Chakrabarty, Gaurava K. Jaisawal | Summary: We report the detection of 376.05 Hz (2.66 ms) coherent X-ray pulsations in NICER observations of a transient outburst of the low-mass X-ray binary IGR J17494-3030 in 2020 October/November. The system is an […]


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Dynamical Masses and Stellar Evolutionary Model Predictions of M-Stars

Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Jamila Pegues, Ian Czekala, Sean M. Andrews, Karin I. Öberg, Gregory J. Herczeg | Summary: In this era of Gaia and ALMA, dynamical stellar mass measurements provide benchmarks that are independent of observations of stellar characteristics and their uncertainties. These benchmarks can then be used to […]


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Point absorbers in Advanced LIGO

Kavli Affiliate: Lee McCuller | First 5 Authors: Aidan F. Brooks, Gabriele Vajente, Hiro Yamamoto, Rich Abbott, Carl Adams | Summary: Small, highly absorbing points are randomly present on the surfaces of the main interferometer optics in Advanced LIGO. The resulting nano-meter scale thermo-elastic deformations and substrate lenses from these micron-scale absorbers significantly reduces the […]


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