The sharp end of quasars
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چکیده
منابع مشابه
Matthew Freeman: The sharp end of rhomboids
W hat do development of the Drosophila eye and infl amma-tory signaling in mice have in common? They both depend upon proteins of the rhomboid superfamily, a widely expressed group of proteins conserved in almost all organisms so far examined, from bacteria to metazoans. Matthew Freeman first encountered rhomboids while studying EGF receptor signaling (1) in the developing fl y eye (2, 3). The ...
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Estimating the continuum of quasars using the articial neural networks
A lot of absorption lines are in the bluewards of Lyα emission line of quasar which is well-known as Lyαforest. Most of absorption lines in this forest belong to the Lyα absorption of the neutral hydrogen in the inter-galactic medium (IGM). For high redshift quasars and in the continuum with low and medium resolution, there are no many regions without absorption, so that, the quasar continuum i...
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ژورنال
عنوان ژورنال: Nature
سال: 1996
ISSN: 0028-0836,1476-4687
DOI: 10.1038/384415a0