270 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR6 papers
- University of ManchesterGB6 papers
- Istituto di Radioastronomia di BolognaIT5 papers
- University of SouthamptonGB5 papers
- Aberystwyth UniversityGB4 papers
- Catholic University of Eastern AfricaKE4 papers
- Chalmers University of TechnologySE4 papers
- Instituto de Astrofísica de AndalucíaES4 papers
- Instituto de Astrofísica de CanariasES4 papers
- Universidad Complutense de MadridES4 papers
- Universidad de CantabriaES4 papers
- Universidad de La LagunaES4 papers
22 papers
Determination of kinematic distances of WISE & SMGPS H II regions in the Galactic plane using SEDIGISM cloud association
Moses Langa, Mark Thompson, Andrew Rigby +7
One of the fundamental requirements for studying and understanding Galactic structure and massive star formation is accurate distances to H II regions. However, most distance assig…
Implementation of the hybrid exchange-correlation functionals in the SIESTA code
Yann Pouillon, Bill Clintone Oyomo, James Sifuna +6
We present an efficient and accurate implementation of hybrid exchange-correlation (XC) functionals in the SIESTA code, enabling large-scale simulations based on Hartree-Fock-type…
LeMMINGs VII: 5 GHz, 50 mas e-MERLIN observations of a statistically complete sample of nearby AGN
D. R. A. Williams-Baldwin, R. D. Baldi, R. J. Beswick +36
We present 5 GHz e-MERLIN radio images at 50 mas resolution of the nuclear regions of the Legacy e-MERLIN Multi-band Imaging of Nearby Galaxies survey (LeMMINGs), the deepest stati…
H II regions and supernova remnants associated with molecular clouds: A pilot study with the SARAO MeerKAT Galactic Plane Survey
Moses O. Langa, Mark A. Thompson, Andrew J. Rigby +5
Massive stars (mass beyond 8 solMass) release vast amounts of energy into the interstellar medium through their stellar winds, photoionising radiation and supernova explosions. The…
Strain dependence of the Bloch domain component in 180 domains in bulk PbTiO from first-principles
Stephen Chege, Louis Bastogne, Fernando Gómez-Ortiz +4
We investigate the emergence of Bloch-type polarization components in 180 ferroelectric domain walls in bulk PbTiO under varying mechanical boundary conditions, using…
Non-thermal Radio Emission from Massive Protostars in the SARAO MeerKAT Galactic Plane Survey
W. O Obonyo, M. G Hoare, S. L Lumsden +7
We present an investigation of the L-band emission from known massive young stellar objects (MYSOs) in the SARAO MeerKAT Galactic Plane Survey to search for non-thermal radio emitt…
Interaction of dopants with the I-type basal stacking fault in hexagonal-diamond Si
Marc Túnica, Perpetua Wanjiru Muchiri, Alberto Zobelli +3
Recently synthesized hexagonal-diamond silicon, germanium, and silicon-germanium nanowires exhibit remarkable optical and electronic properties when compared to cubic-diamond polyt…
Diagrammatic Multiplet-Sum Method (MSM) Density-Functional Theory (DFT): II. Completion of the Two-Orbital Two-Electron Model (TOTEM) with an Application to the Avoided Crossing in Lithium Hydride (LiH)
Mark E. Casida, Abraham Ponra, Carolyne Bakasa +1
The Ziegler-Rauk-Baerends multiplet sum method (MSM) assumes that density-functional theory (DFT) provides a good description of states dominated by a single determinant. It then u…
The SARAO MeerKAT Galactic Plane Survey filamentary source catalogue
Gwenllian M. Williams, Mark A. Thompson, Mubela Mutale +11
We present a catalogue of filamentary structures identified in the SARAO (South African Radio Astronomy Observatory) MeerKAT 1.3 GHz Galactic Plane Survey (SMGPS). We extract 933 f…
Thermoelastic Properties Of The Ti2AlC MAX Phase: An Ab Initio Study
Bill Clintone Oyomo, Leah Wairimu Mungai, Geoffrey Arusei +4
MAX phases are used on an industrial scale in the transportation, armour, and furnace development sectors, among others. However, data on the dynamical properties of these material…
Radio jets in NGC 1068 with e-MERLIN and VLA: structure and morphology
Isaac M. Mutie, David Williams-Baldwin, Robert J. Beswick +7
We present new high-sensitivity e-MERLIN and VLA radio images of the prototypical Seyfert 2 galaxy NGC 1068 at 5, 10 and 21 GHz. We image the radio jet, from the compact components…
Diagrammatic Multiplet-Sum Method (MSM) Density-Functional Theory (DFT): Investigation of the Transferability of Integrals in "Simple" DFT-Based Approaches to Multi-Determinantal Problems
Abraham Ponra, Carolyne Bakasa, Anne Justine Etindele +1
Static correlation is a difficult problem for density-functional theory (DFT) as it arises in cases of degenerate or quasi-degenerate states where a multideterminantal wave functio…
LeMMINGs. VI. Connecting nuclear activity to bulge properties of active and inactive galaxies: radio scaling relations and galaxy environment
B. T. Dullo, J. H. Knapen, R. J. Beswick +13
Multiwavelength studies indicate that nuclear activity and bulge properties are closely related, but the details remain unclear. To study this further, we combine $Hubble~Space~Tel…
LeMMINGs. V. Nuclear activity and bulge properties: a detailed multi-component decomposition of -MERLIN Palomar galaxies with
B. T. Dullo, J. H. Knapen, R. J. Beswick +12
[Abridged] We use high-resolution imaging and -MERLIN 1.5-GHz observations of galaxy cores from the LeMMINGs survey to investigate the relation between optical structural…
Successful Kinetic Impact into an Asteroid for Planetary Defense
R. Terik Daly, Carolyn M. Ernst, Olivier S. Barnouin +98
While no known asteroid poses a threat to Earth for at least the next century, the catalog of near-Earth asteroids is incomplete for objects whose impacts would produce regional de…
The Impact of Nitrogen Doping on Structural and Electronic Properties of Titanium Sesquioxide, Ti 2 O 3 : An ab-initio Study
Lynet Allan, George O Amolo, Julius Mwabora +1
Titanium-based oxides are abundant, chemically stable, non-toxic, and highly versatile materials, with applications ranging from photovoltaics to catalysis. For rutile and anatase…
LeMMINGs. III. The e-MERLIN Legacy Survey of the Palomar sample. Exploring the origin of nuclear radio emission in active and inactive galaxies through the [O III] -- radio connection
R. D. Baldi, D. R. A. Williams, R. J. Beswick +31
What determines the nuclear radio emission in local galaxies? We combine optical [O III] line emission, robust black hole (BH) mass estimates, and high-resolution e-MERLIN 1.5-GHz…
Massive Protocluster of a Periodic Maser Source G188.95+0.89
M. M. Mutie, J. O. Chibueze, K. El Bouchefry +3
We report the results of ongoing monitoring of the 6.7 GHz CHOH masers associated with G188.95+0.89. In these observations five features are periodically varying and at least t…
First-principles study of two-dimensional electron and hole gases at the head-to-head and tail-to-tail 180 domain walls in PbTiO ferroelectric thin films
James Sifuna, Pablo García-Fernández, George S. Manyali +2
We study from first-principles the structural and electronic properties of head-to-head (HH) and tail-to-tail (TT) 180 domain walls in isolated free-standing PbTiO sl…
Comparison of band-fitting and Wannier-based model construction for WSe
James Sifuna, Pablo García-Fernández, George S. Manyali +2
Transition metal dichalcogenide materials are being thoroughly studied due to their novel two-dimensional structure, that is associated with exceptional opti…
Development in Astronomy and Space Science in Africa
Mirjana Pović, Michael Backes, Paul Baki +20
The development of astronomy and space science in Africa has grown significantly over the past few years. These advancements make the United Nations Sustainable Development Goals m…
Partial Density of States Ligand Field Theory (PDOS-LFT): Recovering a LFT-Like Picture and Application to Photoproperties of Ruthenium(II) Polypyridine Complexes
Denis Magero, Mark E. Casida, George Amolo +2
Gas phase density-functional theory (DFT) and time-dependent DFT (TD-DFT) calculations are reported for a data base of 98 ruthenium(II) polypyridine complexes. Comparison with X-ra…