Kavli Affiliate: George Efstathiou | First 5 Authors: Emma Shen, Dominic Anstey, Eloy de Lera Acedo, Anastasia Fialkov, | Summary: Global 21-cm experiments are built to study the evolution of the Universe between the cosmic dawn and the epoch of reionisation. FlexKnot is a function parameterised by freely moving knots stringed together by splines. Adopting […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Francesco D’Eugenio, Roberto Maiolino, Stefano Carniani, Emma Curtis-Lake, Joris Witstok | Summary: Finding the emergence of the first generation of metals in the early Universe, and identifying their origin, are some of the most important goals of modern astrophysics. We present deep JWST/NIRSpec spectroscopy of GS-z12, a […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Christina C. Williams, Stacey Alberts, Zhiyuan Ji, Kevin N. Hainline, Jianwei Lyu | Summary: Using deep JWST imaging from JADES, JEMS and SMILES, we characterize optically-faint and extremely red galaxies at $z>3$ that were previously missing from galaxy census estimates. The data indicate the existence of abundant, […]
Kavli Affiliate: George Efstathiou | First 5 Authors: Anastasia Fialkov, Thomas Gessey-Jones, Jiten Dhandha, , | Summary: The hydrogen 21-cm signal is predicted to be the richest probe of the young Universe including eras known as the cosmic Dark Ages, the Cosmic Dawn when the first star and black hole formed, and the Epoch of […]
Kavli Affiliate: George Efstathiou | First 5 Authors: Anastasia Fialkov, Thomas Gessey-Jones, Jiten Dhandha, , | Summary: The hydrogen 21-cm signal is predicted to be the richest probe of the young Universe including eras known as the cosmic Dark Ages, the Cosmic Dawn when the first star and black hole formed, and the Epoch of […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Jakob M. Helton, Fengwu Sun, Charity Woodrum, Kevin N. Hainline, Christopher N. A. Willmer | Summary: We conduct a systematic search for high-redshift galaxy overdensities at $4.9 < z_{,mathrm{spec}} < 8.9$ in both the GOODS-N and GOODS-S fields using JWST/NIRCam imaging from JADES and JEMS in addition […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Asa F. L. Bluck, Christopher J. Conselice, Katherine Ormerod, Joanna M. Piotrowska, Nathan Adams | Summary: We present an analysis of the quenching of star formation in massive galaxies ($M_* > 10^{9.5} M_odot$) within the first 0.5 – 3 Gyr of the Universe’s history utilizing JWST-CEERS data. […]
Kavli Affiliate: George Efstathiou | First 5 Authors: George Efstathiou, Erik Rosenberg, Vivian Poulin, , | Summary: Axion-like early dark energy (EDE) as an extension to $Lambda$CDM has been proposed as a possible solution to the ‘Hubble tension’. We revisit this model using a new cosmic microwave background (CMB) temperature and polarization likelihood constructed from […]
Kavli Affiliate: George Efstathiou | First 5 Authors: Rajesh Mondal, Rennan Barkana, Anastasia Fialkov, , | Summary: The 21-cm signal from the dark ages is a powerful tool for fundamental cosmology and for probing new physics. While it can be used for precision measurements within standard cosmology, here we study two non-standard models: an excess […]
Kavli Affiliate: George Efstathiou | First 5 Authors: Rajesh Mondal, Rennan Barkana, Anastasia Fialkov, , | Summary: The dark ages 21-cm signal is a powerful tool for precision cosmology and probing new physics. We study two non-standard models: an excess radio background (ERB) model (possibly generated by dark matter decay) and the millicharged dark matter […]