Joseph F. Hennawi
University of California, Santa Barbara
308 Papers
5.8K Citations
Joseph F. Hennawi is an academic researcher from University of California, Santa Barbara. The author has contributed to research in topics: Quasar & Galaxy. The author has an hindex of 75, co-authored 269 publications. Previous affiliations of Joseph F. Hennawi include Princeton University & University of California, Berkeley.
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Papers
Constraining the dynamical importance of hot gas and radiation pressure in quasar outflows using emission line ratios
TL;DR: In this article, an indirect method to detect the presence of a hot bubble using hydrostatic photoionization calculations of the cold (~10^4 K) line-emitting gas was presented.
Lyα Forest Tomography from Background Galaxies: The First Megaparsec-resolution Large-scale Structure Map at z > 2
Khee-Gan Lee,Joseph F. Hennawi,Casey W. Stark,Casey W. Stark,J. Xavier Prochaska,Martin White,Martin White,David J. Schlegel,Anna-Christina Eilers,Andreu Arinyo-i-Prats,Nao Suzuki,Rupert A. C. Croft,Karina Caputi,Paolo Cassata,Paolo Cassata,Olivier Ilbert,Bianca Garilli,Anton M. Koekemoer,Vincent Le Brun,Olivier Le Fèvre,D. Maccagni,Peter Nugent,Peter Nugent,Yoshiaki Taniguchi,Lidia Tasca,Laurence Tresse,Gianni Zamorani,E. Zucca +27 more
TL;DR: In this paper, the first observations of foreground Lyα forest absorption from high-redshift galaxies are presented, targeting 24 star-forming galaxies (SFGs) with z 2.3-2.8 within a 5' × 14' region of the COSMOS field.
Constraining IGM enrichment and metallicity with the C IV forest correlation function
TL;DR: In this article , a two-point correlation function (2PCF) was used to constrain the IGM metallicity and enrichment topology with high precision at z > 4.
Quantitative constraints on the reionization history from the igm damping wing signature in two quasars at z > 7
Frederick B. Davies,Joseph F. Hennawi,Joseph F. Hennawi,Eduardo Bañados,Zarija Lukić,Roberto Decarli,Roberto Decarli,Xiaohui Fan,Emanuele Paolo Farina,Chiara Mazzucchelli,Hans-Walter Rix,Bram Venemans,Fabian Walter,Feige Wang,Feige Wang,Jinyi Yang,Jinyi Yang +16 more
TL;DR: Davies et al. as mentioned in this paper combined a large-volume semi-numerical simulation of reionization topology with 1D radiative transfer through high-resolution hydrodynamical simulations of the high-redshift universe to construct models of quasar transmission spectra.
Chemical constraints on the contribution of population III stars to cosmic reionization
TL;DR: In this paper, the authors use a semi-analytic model of galaxy formation, which tracks galactic chemical evolution, to gauge the impact of Population III stars on reionization.