Matches in SemOpenAlex for { <https://semopenalex.org/work/W2493313686> ?p ?o ?g. }
- W2493313686 abstract "We present upper limits on the 21 cm power spectrum at $z = 5.9$ calculated from the model-independent limit on the neutral fraction of the intergalactic medium of $x_{rm H{small I }} < 0.06 + 0.05 (1sigma)$ derived from dark pixel statistics of quasar absorption spectra. Using 21CMMC, a Markov chain Monte Carlo Epoch of Reionization analysis code, we explore the probability distribution of 21 cm power spectra consistent with this constraint on the neutral fraction. We present 99 per cent confidence upper limits of $Delta^2(k) < 10$ to $20 {rm mK}^2$ over a range of $k$ from 0.5 to $2.0 h{rm Mpc}^{-1}$, with the exact limit dependent on the sampled $k$ mode. This limit can be used as a null test for 21 cm experiments: a detection of power at $z=5.9$ in excess of this value is highly suggestive of residual foreground contamination or other systematic errors affecting the analysis." @default.
- W2493313686 created "2016-08-23" @default.
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- W2493313686 date "2016-08-03" @default.
- W2493313686 modified "2023-10-18" @default.
- W2493313686 title "Upper limits on the 21 cm power spectrum atz = 5.9 from quasar absorption line spectroscopy" @default.
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- W2493313686 doi "https://doi.org/10.1093/mnrasl/slw156" @default.
- W2493313686 hasPublicationYear "2016" @default.
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