activity
19972026
most citedEffect of Primordial Black Holes on the Cosmic Microwave Background and Cosmological Parameter Estimates

418 citations · 4.7k across the 87 of their papers we have counts for

collaborators

88 papers

astro-ph.GA2026

Probing the IMF in the Early Universe -- Direct measurements in the Boötes I UFD with JWST/NIRCam

Keyi Ding, Mario Gennaro, Roberto J. Avila +20

The dependence of the stellar initial mass function (IMF) on star-formation environment, particularly at low metallicities and high redshifts, remains poorly constrained. Ultra-fai…

astro-ph.GA2026★ 1 cited

Population III star formation in an X-ray background: V. Environmental dependence and halo occupation probability

Jongwon Park, Massimo Ricotti

An X-ray background in the early Universe enhances molecular hydrogen formation, the main coolant of primordial gas, thereby lowering the threshold for Pop III star formation. Cont…

astro-ph.GA2026

Population III star formation in an X-ray background: IV. On-the-fly calculation of radiation backgrounds and their impact on the intergalactic medium

Jongwon Park, Massimo Ricotti

In this paper, part of a series on the effects of X-ray sources in promoting Population III (Pop III) star formation, we investigate the ionisation and heating of the intergalactic…

astro-ph.GA2024★ 2 cited

Explanations for the two-component spectral energy distributions of gravitationally lensed stars at high redshifts

Armin Nabizadeh, Erik Zackrisson, Emma Lundqvist +4

Observations of gravitationally lensed, high-mass stars at redshifts occasionally reveal spectral energy distributions that contain two components with different effecti…

astro-ph.GA2024★ 2 cited

JWST NIRSpec High-resolution Spectroscopy of MACS0647-JD at z=10.167: Resolved [OII] Doublet and Electron Density in an Early Galaxy

Abdurro'uf, Rebecca L. Larson, Dan Coe +26

We present JWST/NIRSpec high-resolution spectroscopy G395H/F290LP of MACS0647-JD, a gravitationally lensed galaxy merger at . The new spectroscopy, which is acquired for…

astro-ph.GA2024

JWST MIRI detections of H and [O III] and direct metallicity measurement of the lensed galaxy MACS0647JD

Tiger Yu-Yang Hsiao, Javier Álvarez-Márquez, Dan Coe +30

JWST spectroscopy has revolutionized our understanding of galaxies in the early universe. Covering wavelengths up to , NIRSpec can detect rest-frame optical emission…