Results 61 to 70 of about 210 (157)

Measuring the Quantum State of Dark Matter

Annalen der Physik, Volume 536, Issue 1, January 2024.
It is demonstrated how the time series obtained from searches for ultralight bosonic dark matter, such as the axion, can be used to determine whether it is in a coherent or incoherent quantum state. Abstract It is shown how the time series obtained from searches for ultralight bosonic dark matter (DM), such as the axion, can be used to determine ...
David J. E. Marsh
wiley   +1 more source

The Effects of Reionization on Lyman-alpha Galaxy Surveys

, 2005
9 pages, 5 figures, in press at MNRAS (minor changes in response to referee's comments)
Furlanetto, Steven R., Zaldarriaga, Matias, Hernquist, Lars   +2 more
openaire   +2 more sources

A Spectral Atlas of Lyα Emitters at z = 5.7 and z = 6.6

The Astrophysical Journal
We present two uniformly observed spectroscopic samples of Ly α emitters (LAEs; 127 at z = 5.7 and 82 at z = 6.6), which we use to investigate the evolution of the LAE population at these redshifts.
A. Songaila, L. L. Cowie, A. J. Barger, E. M. Hu, A. J. Taylor   +4 more
doaj   +1 more source

The Web Epoch of Reionization Lyα Survey (WERLS). I. MOSFIRE Spectroscopy of z ∼ 7–8 Lyα Emitters

The Astrophysical Journal
We present the first results from the Web Epoch of Reionization Ly α Survey (WERLS), a spectroscopic survey of Ly α emission using Keck I/MOSFIRE and LRIS.
Olivia R. Cooper, Caitlin M. Casey, Hollis B. Akins, Jake Magee, Alfonso Melendez, Mia Fong, Stephanie M. Urbano Stawinski, Jeyhan S. Kartaltepe, Steven L. Finkelstein, Rebecca L. Larson, Intae Jung, Ash Bista, Jaclyn B. Champagne, Óscar A. Chávez Ortiz, Sadie Coffin, M. C. Cooper, Nicole Drakos, Andreas L. Faisst, Maximilien Franco, Seiji Fujimoto, Steven Gillman, Ghassem Gozaliasl, Santosh Harish, Taylor A. Hutchison, Anton M. Koekemoer, Vasily Kokorev, Jitrapon Lertprasertpong, Daizhong Liu, Arianna S. Long, Casey Papovich, R. Michael Rich, Brant E. Robertson, Margherita Talia, Brittany N. Vanderhoof, John R. Weaver, Katherine E. Whitaker, Jorge A. Zavala   +36 more
doaj   +1 more source

Lyman Alpha and MgII as Probes of Galaxies and their Environments

, 2014
Lyα emission, Lyα absorption and MgII absorption are powerful tracers of neutral hydrogen. Hydrogen is the most abundant element in the universe and plays a central role in galaxy formation via gas accretion and outflows, as well as being the precursor to molecular clouds, the sites of star formation.
Barnes, Luke A., Garel, Thibault, Kacprzak, Glenn G.   +2 more
openaire   +2 more sources

LATIS Data Release: ∼4200 Spectra of z ∼ 2–3 Galaxies, Redshifts, and Intergalactic Medium Tomography Maps

The Astrophysical Journal Supplement Series
We present the data release of the Ly α Tomography IMACS Survey (LATIS), one of the largest optical spectroscopic surveys of faint high-redshift galaxies.
Andrew B. Newman, Gwen C. Rudie, Guillermo A. Blanc, Daniel D. Kelson, Nima Chartab, Enrico Congiu, Victoria Pérez, Mahdi Qezlou, Simeon Bird, Brian C. Lemaux, Olga Cucciati   +10 more
doaj   +1 more source

Compact Core, Extended Reach: A Bipolar Kiloparsec-scale Elongation in a Little Red Dot at z ≈ 5.5

The Astrophysical Journal Letters
Little red dots (LRDs) appear extremely compact at rest-frame optical wavelengths, yet many show extended rest-frame UV morphology revealing more complex internal structure.
Zhiyuan Ji, Yang Sun, Mauro Giavalisco, Yongda Zhu, George H. Rieke, Christina C. Williams, Michael V. Maseda, Jianwei Lyu, Marcia Rieke, Sandro Tacchella   +9 more
doaj   +1 more source

The galaxy-IGM connection in THESAN: the physics connecting the IGM Lyman-$α$ opacity and galaxy density in the reionization epoch

The Open Journal of Astrophysics
The relation between the Lyman-$\alpha$ effective optical depth of quasar sightlines ($\tau_\mathrm{los}$) and the distribution of galaxies around them is an emerging probe of the connection between the first collapsed structures and the IGM properties ...
Enrico Garaldi, Verena Bellscheidt, Aaron Smith, Rahul Kannan   +3 more
doaj   +1 more source

Metallicity Evolution of Damped Lyman-Alpha Galaxies

, 2002
We have reanalyzed the existing data on Zinc abundances in damped Ly-alpha (DLA) absorbers to investigate whether their mean metallicity evolves with time. Most models of cosmic chemical evolution predict that the mass- weighted mean interstellar metallicity of galaxies should rise with time from a low value ~ 1/30 solar at z ~ 3 to a nearly solar ...
Kulkarni, Varsha P., Fall, S. Michael
openaire   +2 more sources

The Lyα Halos of Galaxies at z ≈ 2–3 in the Keck Baryonic Structure Survey

The Astrophysical Journal
We present the large-scale spatial Ly α profiles of galaxies from the Keck Baryonic Structure Survey (KBSS) at 2 
Ryan F. Trainor, Noah R. Lamb, Charles C. Steidel, Yuguang Chen, Dawn K. Erb, Elizabeth Trenholm, Rebecca L. McClain, Io Kovach   +7 more
doaj   +1 more source