Наукова електронна бібліотека
періодичних видань НАН України
періодичних видань НАН України
Influence of the continuum determination method on the mean transmission in the Lyα forest
Репозиторій DSpace/Manakin
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Influence of the continuum determination method on the mean transmission in the Lyα forest
Інший ID:
DOI:10.17721/2227-1481.6.34-40
Посилання:
Influence of the continuum determination method on the mean transmission in the Lyα forest / O. Torbaniuk // Advances in Astronomy and Space Physics. — 2016. — Т. 6., вип. 1. — С. 34-40. — Бібліогр.: 51 назв. — англ.
Підтримка:
The author is thankful to Dr. Ganna Ivashchenko and Dr. Irina Vavilova for their invaluable help and fruitful discussions. This work has been supported by the Target Programme of Space Research of the NAS of Ukraine for 2013-2016 and by the Swiss National Science Foundation grant SCOPE IZ7370-152581.
Дата:
2016
Переглядів:
727
Завантажень:
501
Анотація:
Determination of the initial flux, or continuum, in the quasar spectra prior to its absorption by the intergalactic Hi is nontrivial problem and it affects the precision of the mean transmission in the Lyα forest, F(z). The results of comparison of the F(z) values obtained using different methods of the continuum determination are presented in this paper. This analysis was conducted using the most complete compilation of the F(z) data from the literature. It was found that the values of the F(z) obtained with the manually determined continuum are systematically higher than those obtained from extrapolated continuum. The difference varies from 5% at z = 2 up to 33% at z = 4.5, respectively.
