Sensitivity coefficients to $\alpha$-variation for astrophysically relevant transitions in Ni II

Abstract

We calculated the dependence of the transition frequencies on the fine-structure constant $\alpha$ ($q$-factors) for Ni~II. Nickel is one of the few elements with high sensitivity to $\alpha$-variation, whose lines are observed at high redshifts. This makes it a sensitive probe for $\alpha$-variation on the cosmological timescale. The electronic structure of Ni II ion was treated within the configuration interaction (CI) method using Dirac-Coulomb Hamiltonian.

References in corpus (27)

• A Search for Time Variation of the Fine Structure Constant
• Indications of a spatial variation of the fine structure constant
• Possible evidence for a variable fine structure constant from QSO absorption lines: motivations, analysis and results
• Space-Time Variation of Physical Constants and Relativistic Corrections in Atoms
• Calculations of the Relativistic Effects in Many-Electron Atoms and Space-Time Variation of Fundamental Constants
• The UVES Large Program for Testing Fundamental Physics: I Bounds on a change in alpha towards quasar HE 2217-2818
• The UVES Large Program for Testing Fundamental Physics II: Constraints on a Change in μ Towards Quasar HE 0027-1836
• Relativistic effects in Sr, Dy, YbII and YbIII and search for variation of the fine structure constant
• A new measure of Delta alpha/alpha at redshift z = 1.84 from very high resolution spectra of Q1101-264
• The $\alpha$-dependence of transition frequencies for ions Si II, Cr II, Fe II, Ni II, and Zn II
• Calculation of isotope shifts and relativistic shifts in CI, CII, CIII and CIV
• New constraint on cosmological variation of the proton-to-electron mass ratio from Q0528-250
• Molecular hydrogen in the z = 2.66 damped Lyman-alpha absorber toward Q J0643-5041
• Space-time variation of the fine structure constant and evolution of isotope abundances
• Constraining the variation of fundamental constants at z ~ 1.3 using 21-cm absorbers
• Analysis of Molecular Hydrogen Absorption toward QSO B0642-5038 for a Varying Proton-to-Electron Mass Ratio
• Constraining the Variation of the Fine Structure Constant with Observations of Narrow Quasar Absorption Lines
• Microwave and submillimeter molecular transitions and their dependence on fundamental constants
• An upper limit to the variation in the fundamental constants at redshift z = 5.2
• Improved calculation of relativistic shift and isotope shift in Mg I
• Relativistic corrections to transition frequencies of Fe I and search for variation of the fine structure constant
• QSO 0347-383 and the invariance of m_p/m_e in the course of cosmic time
• Transition frequency shifts with fine structure constant variation for Fe II: Breit and core-valence correlation correction
• The alpha-dependence of transition frequencies for some ions of Ti, Mn, Na, C, and O, and the search for variation of the fine structure constant
• Relativistic effects in Ni II and the search for variation of the fine structure constant
• Transition frequency shifts with fine-structure constant variation for Fe I. Isotope shift calculations in Fe I and Fe II
• Coupled-cluster single-double calculations of the relativistic energy shifts in C IV, Na I, Mg II, Al III, Si IV, Ca II and Zn II