193 citations · 2k across the 63 of their papers we have counts for
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gr-qc2009★ 6 cited
Vacuum non-expanding horizons and shear-free null geodesic congruences
T. M. Adamo, E. T. Newman
We investigate the geometry of a particular class of null surfaces in space-time called vacuum Non-Expanding Horizons (NEHs). Using the spin-coefficient equation, we provide a comp…
gr-qc2009★ 8 cited
Asymptotically Stationary and Static Space-times and Shear-free Null Geodesic Congruences
T. M. Adamo, E. T. Newman
In classical electromagnetic theory, one formally defines the complex dipole moment (the electric plus 'i' magnetic dipole) and then computes (and defines) the complex center of ch…
gr-qc2009★ 70 cited
Null Geodesic Congruences, Asymptotically Flat Space-Times and Their Physical Interpretation
T. M. Adamo, E. T. Newman, C. N. Kozameh
Shear-free or asymptotically shear-free null geodesic congruences possess a large number of fascinating geometric properties and to be closely related, in the context of general re…