Assuming Ionization Equilibrium and the Impact on the Ly alpha Forest Power Spectrum during the End of Reionization at 8 >= z >= 5

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Assuming Ionization Equilibrium and the Impact on the Ly alpha Forest Power Spectrum during the End of Reionization at 8 >= z >= 5. / Kusmic, Samir; Finlator, Kristian; Keating, Laura; Huscher, Ezra.

In: Astrophysical Journal, Vol. 931, No. 1, 46, 01.05.2022.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Kusmic, S, Finlator, K, Keating, L & Huscher, E 2022, 'Assuming Ionization Equilibrium and the Impact on the Ly alpha Forest Power Spectrum during the End of Reionization at 8 >= z >= 5', Astrophysical Journal, vol. 931, no. 1, 46. https://doi.org/10.3847/1538-4357/ac66e3

APA

Kusmic, S., Finlator, K., Keating, L., & Huscher, E. (2022). Assuming Ionization Equilibrium and the Impact on the Ly alpha Forest Power Spectrum during the End of Reionization at 8 >= z >= 5. Astrophysical Journal, 931(1), [46]. https://doi.org/10.3847/1538-4357/ac66e3

Vancouver

Kusmic S, Finlator K, Keating L, Huscher E. Assuming Ionization Equilibrium and the Impact on the Ly alpha Forest Power Spectrum during the End of Reionization at 8 >= z >= 5. Astrophysical Journal. 2022 May 1;931(1). 46. https://doi.org/10.3847/1538-4357/ac66e3

Author

Kusmic, Samir ; Finlator, Kristian ; Keating, Laura ; Huscher, Ezra. / Assuming Ionization Equilibrium and the Impact on the Ly alpha Forest Power Spectrum during the End of Reionization at 8 >= z >= 5. In: Astrophysical Journal. 2022 ; Vol. 931, No. 1.

Bibtex

@article{2fcfd9e982374bab9a5203ed4ebd45ef,
title = "Assuming Ionization Equilibrium and the Impact on the Ly alpha Forest Power Spectrum during the End of Reionization at 8 >= z >= 5",
abstract = "We explore how the assumption of ionization equilibrium modulates the modeled intergalactic medium at the end of the hydrogen epoch of reionization using the cosmological radiation hydrodynamic Technicolor Dawn simulation. In neutral and partially ionized regions where the metagalactic ultraviolet background is weak, the ionization timescale t (ion) equivalent to Gamma(-1) exceeds the Hubble time. Assuming photoionization equilibrium in such regions artificially boosts the ionization rate, accelerating reionization. By contrast, the recombination time t (rec) < t (ion) in photoionized regions, with the result that assuming photoionization equilibrium artificially increases the neutral hydrogen fraction. Using snapshots in the range 8 >= z >= 5, we compare the predicted Ly alpha forest (LAF) flux power spectrum with and without the assumption of ionization equilibrium. Small scales (k > 0.1 rad s km(-1)) exhibit reduced power from 7",
keywords = "COSMOLOGICAL SIMULATIONS, PHYSICAL CONDITIONS, GALAXY FORMATION, EVOLUTION, FEEDBACK, MODEL, AGN",
author = "Samir Kusmic and Kristian Finlator and Laura Keating and Ezra Huscher",
year = "2022",
month = may,
day = "1",
doi = "10.3847/1538-4357/ac66e3",
language = "English",
volume = "931",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",
number = "1",

}

RIS

TY - JOUR

T1 - Assuming Ionization Equilibrium and the Impact on the Ly alpha Forest Power Spectrum during the End of Reionization at 8 >= z >= 5

AU - Kusmic, Samir

AU - Finlator, Kristian

AU - Keating, Laura

AU - Huscher, Ezra

PY - 2022/5/1

Y1 - 2022/5/1

N2 - We explore how the assumption of ionization equilibrium modulates the modeled intergalactic medium at the end of the hydrogen epoch of reionization using the cosmological radiation hydrodynamic Technicolor Dawn simulation. In neutral and partially ionized regions where the metagalactic ultraviolet background is weak, the ionization timescale t (ion) equivalent to Gamma(-1) exceeds the Hubble time. Assuming photoionization equilibrium in such regions artificially boosts the ionization rate, accelerating reionization. By contrast, the recombination time t (rec) < t (ion) in photoionized regions, with the result that assuming photoionization equilibrium artificially increases the neutral hydrogen fraction. Using snapshots in the range 8 >= z >= 5, we compare the predicted Ly alpha forest (LAF) flux power spectrum with and without the assumption of ionization equilibrium. Small scales (k > 0.1 rad s km(-1)) exhibit reduced power from 7

AB - We explore how the assumption of ionization equilibrium modulates the modeled intergalactic medium at the end of the hydrogen epoch of reionization using the cosmological radiation hydrodynamic Technicolor Dawn simulation. In neutral and partially ionized regions where the metagalactic ultraviolet background is weak, the ionization timescale t (ion) equivalent to Gamma(-1) exceeds the Hubble time. Assuming photoionization equilibrium in such regions artificially boosts the ionization rate, accelerating reionization. By contrast, the recombination time t (rec) < t (ion) in photoionized regions, with the result that assuming photoionization equilibrium artificially increases the neutral hydrogen fraction. Using snapshots in the range 8 >= z >= 5, we compare the predicted Ly alpha forest (LAF) flux power spectrum with and without the assumption of ionization equilibrium. Small scales (k > 0.1 rad s km(-1)) exhibit reduced power from 7

KW - COSMOLOGICAL SIMULATIONS

KW - PHYSICAL CONDITIONS

KW - GALAXY FORMATION

KW - EVOLUTION

KW - FEEDBACK

KW - MODEL

KW - AGN

U2 - 10.3847/1538-4357/ac66e3

DO - 10.3847/1538-4357/ac66e3

M3 - Journal article

VL - 931

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 46

ER -

ID: 315768790