Resonant H- photodetachment: Enhanced photodestruction and consequences for radiative feedback

S. Miyake; P. C. Stancil; H. R. Sadeghpour; A. Dalgarno; B. M. McLaughlin; R. C. Forrey

doi:10.1088/2041-8205/709/2/L168

Resonant H^- photodetachment: Enhanced photodestruction and consequences for radiative feedback

S. Miyake, P. C. Stancil, H. R. Sadeghpour, A. Dalgarno, B. M. McLaughlin, R. C. Forrey

Division of Science (Berks)

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29 Scopus citations

Abstract

The hydrogen negative ion plays a crucial role in the formation of hydrogen molecules in the early universe. Cooling through excitation of H₂ drives the formation of the first cosmological objects. The H₂ molecules are produced primarily by a reaction sequence initiated by H ^-. We explore the influence of enhanced photodestruction rates that arise due to absorption by resonance states of H^- lying near 11 eV. We examine the feedback effects that occur in radiation fields characteristic of Population III stars, blackbody sources, power-law spectra, and the hydrogen Lyman modulated sawtooth spectra of the high-redshift intergalactic medium.

Original language	English (US)
Pages (from-to)	L168-L171
Journal	Astrophysical Journal Letters
Volume	709
Issue number	2 PART 2
DOIs	https://doi.org/10.1088/2041-8205/709/2/L168
State	Published - 2010

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/2041-8205/709/2/L168

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abstract = "The hydrogen negative ion plays a crucial role in the formation of hydrogen molecules in the early universe. Cooling through excitation of H2 drives the formation of the first cosmological objects. The H2 molecules are produced primarily by a reaction sequence initiated by H -. We explore the influence of enhanced photodestruction rates that arise due to absorption by resonance states of H- lying near 11 eV. We examine the feedback effects that occur in radiation fields characteristic of Population III stars, blackbody sources, power-law spectra, and the hydrogen Lyman modulated sawtooth spectra of the high-redshift intergalactic medium.",

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T2 - Enhanced photodestruction and consequences for radiative feedback

AU - Miyake, S.

AU - Stancil, P. C.

AU - Sadeghpour, H. R.

AU - Dalgarno, A.

AU - McLaughlin, B. M.

AU - Forrey, R. C.

PY - 2010

Y1 - 2010

N2 - The hydrogen negative ion plays a crucial role in the formation of hydrogen molecules in the early universe. Cooling through excitation of H2 drives the formation of the first cosmological objects. The H2 molecules are produced primarily by a reaction sequence initiated by H -. We explore the influence of enhanced photodestruction rates that arise due to absorption by resonance states of H- lying near 11 eV. We examine the feedback effects that occur in radiation fields characteristic of Population III stars, blackbody sources, power-law spectra, and the hydrogen Lyman modulated sawtooth spectra of the high-redshift intergalactic medium.

AB - The hydrogen negative ion plays a crucial role in the formation of hydrogen molecules in the early universe. Cooling through excitation of H2 drives the formation of the first cosmological objects. The H2 molecules are produced primarily by a reaction sequence initiated by H -. We explore the influence of enhanced photodestruction rates that arise due to absorption by resonance states of H- lying near 11 eV. We examine the feedback effects that occur in radiation fields characteristic of Population III stars, blackbody sources, power-law spectra, and the hydrogen Lyman modulated sawtooth spectra of the high-redshift intergalactic medium.

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Resonant H^- photodetachment: Enhanced photodestruction and consequences for radiative feedback

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