Bounds on the fine structure constant variability from FeII absorption lines in QSO spectra (2007)
Molaro, Paolo, Reimers, Dieter, Agafonova, Irina I., Levshakov, Sergei A.
The Single Ion Differential alpha Measurement (SIDAM) method for measuring fine stucture variations (daa)and its figures of merit are illustrated together with the results produced by means of FeII...
Sergei Levshakov, Fumio Takahara, Irina I. Agafonova
We present a new method for recovering the kinetic temperature of the intervening di+use gas to an accuracy of 10%. The method is based on the comparison of unsaturated absorption-line proles of two...
Monte Carlo inversion of hydrogen and metal lines from QSO absorption spectra (2000)
Levshakov, Sergei A., Agafonova, Irina I., Kegel, Wilhelm H.
A new method, based on the simulated annealing algorithm and aimed at the inverse problem in the analysis of intergalactic (interstellar) complex spectra of hydrogen and metal lines, is presented. We...
Monte Carlo inversion of hydrogen and metal lines from QSO absorption spectra (2000)
Sergei A. Levshakov, Irina I. Agafonova, Wilhelm H. Kegel
. A new method, based on the simulated annealing algorithm and aimed at the inverse problem in the analysis of intergalactic (interstellar) complex spectra of hydrogen and metal lines, is presented....
Levshakov, Sergei A., Takahara, Fumio, Agafonova, Irina I.
We present a new method for recovering the kinetic temperature of the intervening diffuse gas to an accuracy of 10%. The method is based on the comparison of unsaturated absorption-line profiles of...