no code implementations • 26 Nov 2022 • Irham Taufik Andika, Knud Jahnke, Arjen van der Wel, Eduardo Bañados, Sarah E. I. Bosman, Frederick B. Davies, Anna-Christina Eilers, Anton Timur Jaelani, Chiara Mazzucchelli, Masafusa Onoue, Jan-Torge Schindler
Over the last two decades, around 300 quasars have been discovered at $z\gtrsim6$, yet only one has identified as being strongly gravitationally lensed.
no code implementations • 14 Dec 2020 • Kirill Makan, Gábor Worseck, Frederick B. Davies, Joseph F. Hennawi, J. Xavier Prochaska, Philipp Richter
We present new high-resolution (R~14, 000) spectra of the two brightest HeII-transparent quasars in the far-UV (FUV) at z>3. 5, HE2QSJ2311-1417 (z=3. 70) and HE2QSJ1630+0435 (z=3. 81), obtained with the Cosmic Origins Spectrograph (COS) on the Hubble Space Telescope (HST).
Cosmology and Nongalactic Astrophysics
1 code implementation • 24 Jul 2018 • Anson D'Aloisio, Matthew McQuinn, Oliver Maupin, Frederick B. Davies, Hy Trac, Spencer Fuller, Phoebe R. Upton Sanderbeck
Here we use high-resolution radiative transfer simulations to study the parameter space of $T_\mathrm{reion}$.
Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies