Search Results - "Dixon, Keri L"

Bubble size statistics during reionization from 21-cm tomography by Giri, Sambit K., Mellema, Garrelt, Dixon, Keri L., Iliev, Ilian T.

“…Abstract The upcoming SKA1-Low radio interferometer will be sensitive enough to produce tomographic imaging data of the redshifted 21-cm signal from the Epoch…”
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The 21-cm bispectrum as a probe of non-Gaussianities due to X-ray heating by Watkinson, Catherine A, Giri, Sambit K, Ross, Hannah E, Dixon, Keri L, Iliev, Ilian T, Mellema, Garrelt, Pritchard, Jonathan R

“…We present analysis of the normalized 21-cm bispectrum from fully-numerical simulations of intergalactic-medium heating by stellar sources and high-mass X-ray…”
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NIHAO XX: the impact of the star formation threshold on the cusp–core transformation of cold dark matter haloes by Dutton, Aaron A, Macciò, Andrea V, Buck, Tobias, Dixon, Keri L, Blank, Marvin, Obreja, Aura

“…ABSTRACT We use cosmological hydrodynamical galaxy formation simulations from the NIHAO project to investigate the impact of the threshold for star formation…”
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The large-scale observational signatures of low-mass galaxies during reionization by Dixon, Keri L., Iliev, Ilian T., Mellema, Garrelt, Ahn, Kyungjin, Shapiro, Paul R.

“…Observations of the epoch of reionization give us clues about the nature and evolution of the sources of ionizing photons, or early stars and galaxies. We…”
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Evaluating the QSO contribution to the 21-cm signal from the Cosmic Dawn by Ross, Hannah E, Dixon, Keri L, Ghara, Raghunath, Iliev, Ilian T, Mellema, Garrelt

“…The upcoming radio interferometer Square Kilometre Array (SKA) is expected to directly detect the redshifted 21-cm signal from the neutral hydrogen present…”
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A self-consistent 3D model of fluctuations in the helium-ionizing background by Davies, Frederick B, Furlanetto, Steven R, Dixon, Keri L

“…Large variations in the effective optical depth of the Heii Lya forest have been observed at z ... 2.7, but the physical nature of these variations is…”
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Redshift-space distortions in simulations of the 21-cm signal from the cosmic dawn by Ross, Hannah E, Giri, Sambit K, Mellema, Garrelt, Dixon, Keri L, Ghara, Raghunath, Iliev, Ilian T

“…ABSTRACT The 21-cm signal from the Cosmic Dawn (CD) is likely to contain large fluctuations, with the most extreme astrophysical models on the verge of being…”
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The wedge bias in reionization 21-cm power spectrum measurements by Jensen, Hannes, Majumdar, Suman, Mellema, Garrelt, Lidz, Adam, Iliev, Ilian T., Dixon, Keri L.

“…A proposed method for dealing with foreground emission in upcoming 21-cm observations from the epoch of reionization is to limit observations to an…”
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The edge of galaxy formation III: the effects of warm dark matter on Milky Way satellites and field dwarfs by Macciò, Andrea V, Frings, Jonas, Buck, Tobias, Dutton, Aaron A, Blank, Marvin, Obreja, Aura, Dixon, Keri L

“…Abstract In this third paper of the series, we investigate the effects of warm dark matter (WDM) with a particle mass of $m_\mathrm{WDM}=3\, \mathrm{keV}$ on…”
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JWST Constraints on the UV Luminosity Density at Cosmic Dawn: Implications for 21 cm Cosmology by Hassan, Sultan, Lovell, Christopher C., Madau, Piero, Huertas-Company, Marc, Somerville, Rachel S., Burkhart, Blakesley, Dixon, Keri L., Feldmann, Robert, Starkenburg, Tjitske K., Wu, John F., Jespersen, Christian Kragh, Gelfand, Joseph D., Bera, Ankita

“…Abstract An unprecedented array of new observational capabilities are starting to yield key constraints on models of the epoch of first light in the Universe…”
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NIHAO – XXV. Convergence in the cusp-core transformation of cold dark matter haloes at high star formation thresholds by Dutton, Aaron A, Buck, Tobias, Macciò, Andrea V, Dixon, Keri L, Blank, Marvin, Obreja, Aura

“…ABSTRACT We use cosmological hydrodynamical galaxy formation simulations from the NIHAO project to investigate the response of cold dark matter (CDM) haloes to…”
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Simulating the impact of X-ray heating during the cosmic dawn by Ross, Hannah E., Dixon, Keri L., Iliev, Ilian T., Mellema, Garrelt

“…Abstract Upcoming observations of the 21-cm signal from the epoch of reionization will soon provide the first direct detection of this era. This signal is…”
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Relative baryon-dark matter velocities in cosmological zoom simulations by Conaboy, Luke, Iliev, Ilian T, Fialkov, Anastasia, Dixon, Keri L, Sullivan, David

“…ABSTRACT Supersonic relative motion between baryons and dark matter due to the decoupling of baryons from the primordial plasma after recombination affects the…”
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Neutral island statistics during reionization from 21-cm tomography by Giri, Sambit K, Mellema, Garrelt, Aldheimer, Thomas, Dixon, Keri L, Iliev, Ilian T

“…Abstract We present the prospects of extracting information about the epoch of reionization by identifying the remaining neutral regions, referred to as…”
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Using artificial neural networks to constrain the halo baryon fraction during reionization by Sullivan, David, Iliev, Ilian T., Dixon, Keri L.

“…AbstractRadiative feedback from stars and galaxies has been proposed as a potential solution to many of the tensions with simplistic galaxy formation models…”
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Creating a galaxy lacking dark matter in a dark matter-dominated universe by Macciò, Andrea V, Prats, Daniel Huterer, Dixon, Keri L, Buck, Tobias, Waterval, Stefan, Arora, Nikhil, Courteau, Stéphane, Kang, Xi

“…ABSTRACT We use hydrodynamical cosmological simulations to show that it is possible to create, via tidal interactions, galaxies lacking dark matter (DM) in a…”
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Predictions for measuring the 21-cm multifrequency angular power spectrum using SKA-Low by Mondal, Rajesh, Shaw, Abinash Kumar, Iliev, Ilian T, Bharadwaj, Somnath, Datta, Kanan K, Majumdar, Suman, Sarkar, Anjan K, Dixon, Keri L

“…ABSTRACT The light-cone effect causes the mean as well as the statistical properties of the redshifted 21-cm signal ${T_{\rm b}}(\hat{\boldsymbol {n}}, \nu)$…”
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Quantitatively rating galaxy simulations against real observations with anomaly detection by Jin, Zehao, Macciò, Andrea V, Faucher, Nicholas, Pasquato, Mario, Buck, Tobias, Dixon, Keri L, Arora, Nikhil, Blank, Marvin, Vulanovic, Pavle

“…ABSTRACT Cosmological galaxy formation simulations are powerful tools to understand the complex processes that govern the formation and evolution of galaxies…”
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NIHAO – XXVIII. Collateral effects of AGN on dark matter concentration and stellar kinematics by Waterval, Stefan, Elgamal, Sana, Nori, Matteo, Pasquato, Mario, Macciò, Andrea V, Blank, Marvin, Dixon, Keri L, Kang, Xi, Ibrayev, Tengiz

“…ABSTRACT Although active galactic nuclei (AGN) feedback is required in simulations of galaxies to regulate star formation, further downstream effects on the…”
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NIHAO – XXVII. Crossing the green valley by Blank, Marvin, Macciò, Andrea V, Kang, Xi, Dixon, Keri L, Soliman, Nadine H

“…ABSTRACT The transition of high-mass galaxies from being blue and star-forming to being red and dead is a crucial step in galaxy evolution, yet not fully…”
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