Results 11 to 20 of about 23,023 (219)
The epoch of reionization [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 We have modelled the process of reionization of the IGM by photoionization by galaxies, in order to predict the epoch of reionization. We use a sophisticated semi-analytic model to track the formation of galaxies. Our study represents a much more complete and physically consistent modelling of reionization than has been conducted in the past ...
Benson, A.J. +3 more
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The reionization of carbon [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 Observations suggest that CII was more abundant than CIV in the intergalactic medium towards the end of the hydrogen reionization epoch. This transition provides a unique opportunity to study the enrichment history of intergalactic gas and the growth of the ionizing background (UVB) at early times.
Finlator, Kristian +5 more
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Living Reviews in Computational Astrophysics, 2022 AbstractThe transformation of cold neutral intergalactic hydrogen into a highly ionized warm plasma marks the end of the cosmic dark ages and the beginning of the age of galaxies. The details of this process reflect the nature of the early sources of radiation and heat, the statistical characteristics of the large-scale structure of the Universe, the ...
Nickolay Y. Gnedin, Piero Madau
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CEMPlifying reionization [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 14 pages, 13 figures, Accepted in MNRAS, Comments ...
Mahavir Sharma, Tom Theuns, Carlos Frenk
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Cosmic Reionization on Computers: Properties of the Post-reionization IGM [PDF]
The Astrophysical Journal, 2017 Abstract We present a comparison between several observational tests of the post-reionization intergalactic medium and the numerical simulations of reionization completed under the Cosmic Reionization On Computers (CROC) project. The CROC simulations match the gap distribution reasonably well, and also provide a good match for the ...
Gnedin, Nickolay Y. +2 more
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The epoch of helium reionization [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 39 pages, including 13 figures, submitted to ...
Sokasian, A., Abel, T., Hernquist, L.
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Early Reionization by Miniquasars [PDF]
The Astrophysical Journal, 2004 Motivated by the recent detection by WMAP of a large optical depth to Thomson scattering -- implying a very early reionization epoch -- we assess a scenario where the universe was reionized by `miniquasars' powered by intermediate-mass black holes (IMBHs), the remnants of the first generation of massive stars.
MADAU P. +4 more
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The late reionization of filaments [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 16 pages, 9 figures, accepted to ...
Finlator, K. +3 more
openaire +2 more sources
PAWS and POCO: NIR Astrophotonic Instruments for Astronomy
Astronomische Nachrichten, Volume 344, Issue 8-9, October-November 2023., 2023 Abstract For near‐infrared ground and space‐based astronomy, compact photonic devices can replace the large bulk optical components in spectrographs, frequency combs, beam combiners, and sky subtraction filters, thus saving cost, reducing volume, weight, and power requirements.
Kalaga Madhav +8 more
wiley +1 more source
Detector system challenges of the wide‐field spectroscopic survey telescope (WST)
Astronomische Nachrichten, Volume 344, Issue 8-9, October-November 2023., 2023 Abstract The wide‐field spectroscopic survey telescope (WST) is proposed to become the next large optical/near infrared facility for the European southern observatory (ESO) once the extremely large telescope (ELT) has become operational. While the latter is optimized for unprecedented sensitivity and adaptive‐optics assisted image quality over a small ...
Roland Bacon +4 more
wiley +1 more source