Results 91 to 100 of about 8,595 (212)

The 21cm–galaxy cross-correlation: Realistic forecast for 21cm signal detection and reionisation constraints

Astronomy & Astrophysics
Context. The 21cm–galaxy cross-correlations are expected to play a key role in the confirmation of the cosmological 21cm signal. Aims. We investigate which survey configurations detect the 21cm–Lyman-α emitter (LAE) cross-correlation signal and assess ...
Hutter Anne, Heneka Caroline
doaj   +1 more source

Perspectives for Cosmological Reionization From Future CMB and Radio Projects

Frontiers in Astronomy and Space Sciences, 2018
In spite of the great recent results from the Planck satellite supporting cosmological reionization scenarios almost compatible with astrophysical models for the evolution of structure, galaxy and star formation, the full understanding of the ...
Tiziana Trombetti, Tiziana Trombetti, Carlo Burigana, Carlo Burigana, Carlo Burigana   +4 more
doaj   +1 more source

Measuring the intergalactic medium correlation length at 5 < z < 6.1: A fast change at the end of reionization

Astronomy & Astrophysics
Context. The Lyman-α forest of high-redshift quasars is a powerful probe of the late stages of the epoch of reionization (EoR), in particular thanks to the presence of Gunn-Peterson troughs.
Spina Benedetta, Bosman Sarah E. I., Maity Barun, Davies Frederick B.   +3 more
doaj   +1 more source

Establishing a relationship between the cosmological 21 cm power spectrum and interferometric closure phases

Astronomy & Astrophysics
Context. Measurements of the cosmic 21 cm background need to achieve a high dynamic range to isolate it from bright foreground emissions. Instrumental calibration inaccuracies can compromise the spectral fidelity of the smooth foreground continuum ...
Keller P. M., Nikolic B., Thyagarajan N.
doaj   +1 more source

Reionization on ice

, 2006
The case for substantial far infrared ice emission in local ultraluminous infrared galaxies, expected based on the presence of mid-infrared ice absorption in their spectra and the known far infrared optical properties of ice, is still largely unsupported by direct observation owing to insufficient far infrared spectral coverage.
Dudley, C. C., Imanishi, M., Maloney, P. R.   +2 more
openaire   +2 more sources

CMB signatures of extended reionization [PDF]

New Astronomy Reviews, 2003
To be published in the proceedings of "The Cosmic Microwave Background and its Polarization", New Astronomy Reviews, (eds. S. Hanany and K.A. Olive)
openaire   +2 more sources

Synergies Between Galaxy Surveys and Reionization Measurements [PDF]

, 2019
The epoch of reionization is one of the most exciting frontiers in astrophysics. Here we describe how the combination of galaxy surveys and direct 21-cm measurements of reionization can illuminate numerous mysteries of this fascinating era.
Chiang, Hsin, Mesinger, Andrew, Davies, Frederick, Trac, Hy, DeBoer, David, Fialkov, Anastasia, Doré, Olivier, Breysse, Patrick, Bromm, Volker, Dillon, Joshua, Parsons, Aaron, Thyagarajan, Nithyanandan, Sievers, Jonathan, Ali-Haimoud, Yacine, Carilli, Chris L., Mirocha, Jordan, La Plante, Paul, Switzer, Eric, Mao, Yi, Murray, Steven, Liu, Adrian, Carucci, Isabella P., Aguirre, James, Ma, Yin-Zhe, Gnedin, Nick, Hazelton, Bryna, Visbal, Eli, Masui, Kiyoshi, Jacobs, Daniel, Dickinson, Mark, Pober, Jonathan, Bowman, Judd D., Lidz, Adam, Koopmans, Leon, Bull, Philip, Munoz, Julian, Dvorkin, Cora, McQuinn, Matthew, Beardsley, Adam, Becker, George, Alvarez, Marcelo, Chang, Tzu-Ching, Robertson, Brant, Furlanetto, Steven, Karkare, Kirit, Kovetz, Ely, Burns, Jack, Cohn, Joanne, Finkelstein, Steven, Zaldarriaga, Matias   +49 more
core   +4 more sources

Before its time: A remarkably evolved protocluster core at z = 7.88

Astronomy & Astrophysics
Protoclusters represent the most extreme environments in the very early Universe. They form from large-scale dark matter overdensities, harbouring an overabundance of galaxies fed by large gas reservoirs.
Witten Callum, Oesch Pascal A., McClymont William, Meyer Romain A., Fudamoto Yoshinobu, Sijacki Debora, Laporte Nicolas, Bennett Jake S., Simmonds Charlotte, Giovinazzo Emma, Danhaive A. Lola, Ciesla Laure, Carvajal-Bohorquez Cristian, Trebitsch Maxime   +13 more
doaj   +1 more source

Constraining reionization morphology and source properties with 21 cm galaxy cross-correlation surveys

Astronomy & Astrophysics
Cross-correlations between 21 cm observations and galaxy surveys provide a powerful probe of reionization by providing robustness against foreground contamination while linking ionization morphology to galaxies. We quantified the constraining power of 21
Pietschke Yannic, Hutter Anne, Heneka Caroline   +2 more
doaj   +1 more source

Dark-ages reionization and galaxy formation simulation V: Morphology and statistical signatures of reionization

, 2016
We use the Dark-ages, Reionization And Galaxy formation Observables from Numerical Simulations (DRAGONS) framework to investigate the effect of galaxy formation physics on the morphology and statistics of ionized hydrogen (H II) regions during the Epoch ...
Alan Duffy (18925381), Simon J. Mutch (19005473), Paul M. Geil (19010342), Gregory B. Poole (18999008), Andrei Mesinger (16164626), J. Stuart B Wyithe (19015049), Paul W. Angel (9427740)   +6 more
core   +1 more source