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Probing the course of cosmic expansion with a combination of observational data
cosmic expansion combination of observational data
2010/12/20
We study the cosmic expansion history by reconstructing the deceleration parameter q(z)
from the SDSS-II type Ia supernova sample (SNIa) with two different light curve fits (MLCS2k2
and SALT-II), th...
Thermal Expansion Contribution to the Temperature Dependence of Excitonic Transitions in GaAs and AlGaAs
Thermal Expansion the Temperature Dependence Excitonic Transitions GaAs and AlGaAs
2010/10/21
Photoluminescence and photoreflectance measurements have been used to determine excitonic transitions in the ternary AlxGa1−xAs alloy in the temperature range from 2 to 300 K. The effect of the ...