Effect of the cosmological transition to metal-enriched star-formation on the hydrogen 21-cm signal

Kavli Affiliate: George Efstathiou | First 5 Authors: Mattis Magg, Itamar Reis, Anastasia Fialkov, Rennan Barkana, Ralf S. Klessen | Summary: Mapping Cosmic Dawn with 21-cm tomography offers an exciting new window into the era of primordial star formation. However, self-consistent implementation of both the process of star formation and the related 21-cm signal is […]


Continue.. Effect of the cosmological transition to metal-enriched star-formation on the hydrogen 21-cm signal

Optical leakage mitigation in ortho-mode transducer detectors for microwave applications

Kavli Affiliate: Clarence L. Chang | First 5 Authors: Riccardo Gualtieri, Peter S. Barry, Thomas Cecil, Amy N. Bender, Clarence . L. Chang | Summary: Planar ortho-mode transducers (OMTs) are a commonly used method of coupling optical signals between waveguides and on-chip circuitry and detectors. While the ideal OMT-waveguide coupling requires minimal disturbance to the […]


Continue.. Optical leakage mitigation in ortho-mode transducer detectors for microwave applications

On measuring the Hubble constant with X-ray reverberation mapping of active galactic nuclei

Kavli Affiliate: Erin Kara | First 5 Authors: Adam Ingram, Guglielmo Mastroserio, Michiel van der Klis, Edward Nathan, Riley Connors | Summary: We show that X-ray reverberation mapping can be used to measure the distance to type 1 active galactic nuclei (AGNs). This is because X-ray photons originally emitted from the `corona’ close to the […]


Continue.. On measuring the Hubble constant with X-ray reverberation mapping of active galactic nuclei

First Doppler Limits on Binary Planets and Exomoons in the HR 8799 System

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: Andrew Vanderburg, Joseph E. Rodriguez, , , | Summary: We place the first constraints on binary planets and exomoons from Doppler monitoring of directly imaged exoplanets. We model radial velocity observations of HR 8799 b, c, and d from Ruffio et al. (2021) and determine upper limits […]


Continue.. First Doppler Limits on Binary Planets and Exomoons in the HR 8799 System

Evidence from Disrupted Halo Dwarfs that $r$-process Enrichment via Neutron Star Mergers is Delayed by $gtrsim500$ Myrs

Kavli Affiliate: Alexander P. Ji | First 5 Authors: Rohan P. Naidu, Alexander P. Ji, Charlie Conroy, Ana Bonaca, Yuan-Sen Ting | Summary: The astrophysical origins of $r$-process elements remain elusive. Neutron star mergers (NSMs) and special classes of core-collapse supernovae (rCCSNe) are leading candidates. Due to these channels’ distinct characteristic timescales (rCCSNe: prompt, NSMs: […]


Continue.. Evidence from Disrupted Halo Dwarfs that $r$-process Enrichment via Neutron Star Mergers is Delayed by $gtrsim500$ Myrs

Amplification of Primordial Perturbations from the Rise or Fall of the Inflaton

Kavli Affiliate: Wayne Hu | First 5 Authors: Keisuke Inomata, Evan McDonough, Wayne Hu, , | Summary: The next generation of cosmic microwave background, gravitational wave, and large scale structure, experiments will provide an unprecedented opportunity to probe the primordial power spectrum on small scales. An exciting possibility for what lurks on small scales is […]


Continue.. Amplification of Primordial Perturbations from the Rise or Fall of the Inflaton

Gemini/GMOS Transmission Spectroscopy of the Grazing Planet Candidate WD 1856+534 b

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: Siyi Xu, Hannah Diamond-Lowe, Ryan J. MacDonald, Andrew Vanderburg, Simon Blouin | Summary: WD 1856+534 b is a Jupiter-sized, cool giant planet candidate transiting the white dwarf WD 1856+534. Here, we report an optical transmission spectrum of WD 1856+534 b obtained from ten transits using the Gemini […]


Continue.. Gemini/GMOS Transmission Spectroscopy of the Grazing Planet Candidate WD 1856+534 b

The Cosmic Ultraviolet Baryon Survey (CUBS) IV: The Complex Multiphase Circumgalactic Medium as Revealed by Partial Lyman Limit Systems

Kavli Affiliate: Robert A. Simcoe | First 5 Authors: Thomas J. Cooper, Gwen C. Rudie, Hsiao-Wen Chen, Sean D. Johnson, Fakhri S. Zahedy | Summary: We present a detailed study of two partial Lyman limit systems (pLLSs) of neutral hydrogen column density $N_mathrm{H,I}approx(1-3)times10^{16},mathrm{cm}^{-2}$ discovered at $z=0.5$ in the Cosmic Ultraviolet Baryon Survey (CUBS). Available far-ultraviolet […]


Continue.. The Cosmic Ultraviolet Baryon Survey (CUBS) IV: The Complex Multiphase Circumgalactic Medium as Revealed by Partial Lyman Limit Systems

Measurement of the Relativistic Sunyaev-Zeldovich Corrections in RX J1347.5-1145

Kavli Affiliate: Adam B. Mantz | First 5 Authors: Victoria Butler, Richard M. Feder, Tansu Daylan, Adam B. Mantz, Dale Mercado | Summary: We present a measurement of the relativistic corrections to the thermal Sunyaev-Zel’dovich (SZ) effect spectrum, the rSZ effect, toward the massive galaxy cluster RX J1347.5-1145 by combining sub-mm images from Herschel-SPIRE with […]


Continue.. Measurement of the Relativistic Sunyaev-Zeldovich Corrections in RX J1347.5-1145