5 papers
Fireworks at Cosmic Dawn: relieving BAO-CMB tensions with the Pop III.1 Flash
Yash Aggarwal, Christopher Cain, Garett Lopez +4
A Cosmic Microwave Background (CMB) optical depth of , several in excess of the latest Planck low- EE polarization measurement, has been proposed as a way t…
Probing the ionizing photon output of galaxies near cosmic dawn with the patchy kSZ effect
Garett Lopez, Anson D'Aloisio, Christopher Cain
A key result from JWST's first cycles is that galaxy formation was well underway by . The implications of these early galaxies for reionization are less clear, however. The C…
The CMB optical depth constrains the duration of reionization
Christopher Cain, Alexander Van Engelen, Kevin S. Croker +3
Recently, it was pointed out that invoking a large value of the CMB optical depth, , could help resolve tensions between DESI DR2 BAO data and the CMB. This is…
Chasing the beginning of reionization in the JWST era
Christopher Cain, Garett Lopez, Anson D'Aloisio +4
Recent JWST observations at may imply galactic ionizing photon production above prior expectations. Under observationally motivated assumptions about escape fractions, thes…
On the rise and fall of galactic ionizing output at the end of reionization
Christopher Cain, Anson D'Aloisio, Garett Lopez +2
Quasar absorption spectra measurements suggest that reionization proceeded rapidly, ended late at , and was followed by a flat ionizing background evolution. Simulation…