Statistical characteristics of the observed metal systems and problems of reionization
نویسندگان
چکیده
We analyze basic properties of about 200 metal systems observed in high resolution spectra of 9 quasars by Boksenberg, Sargent& Rauch (2003). The measured Doppler parameters for the hydrogen and carbon lines are found to be different by a factor
منابع مشابه
Comparison of metal additives and Boron atom on MgH2 absorbing-desorbing characteristics using calculated NQCCs
Using ab initio calculations, the hydrogen desorption from Magnesium hydride (MgH2) was studied. We presented the calculated nuclear quadrupole coupling constants (NQCCs) of hydrogen atom in various systems of MgH2. The effect of interactions of some metal atoms as well as Boron atom with MgH2 host matrix; (MgH2+M) nanostructures (M=Al, Ti, V, Fe, Ni ...
متن کاملComparison of metal additives and Boron atom on MgH2 absorbing-desorbing characteristics using calculated NQCCs
Using ab initio calculations, the hydrogen desorption from Magnesium hydride (MgH2) was studied. We presented the calculated nuclear quadrupole coupling constants (NQCCs) of hydrogen atom in various systems of MgH2. The effect of interactions of some metal atoms as well as Boron atom with MgH2 host matrix; (MgH2+M) nanostructures (M=Al, Ti, V, Fe, Ni ...
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تاریخ انتشار 2008