134 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Liverpool John Moores UniversityGB14 papers
- University of TurkuFI9 papers
- University of Cape TownZA8 papers
- European Space Astronomy CentreES7 papers
- Stellenbosch UniversityZA7 papers
- Instituto de TelecomunicaçõesPT6 papers
- University of AveiroPT6 papers
- University of the WitwatersrandZA6 papers
- Institute of Astronomy and National Astronomical ObservatoryBG5 papers
- Lancaster UniversityGB5 papers
- American Museum of Natural HistoryUS4 papers
- Arizona State UniversityUS4 papers
55 papers
Did Alice Do Wrong? Cross-Cultural Differences in Student Perceptions of Generative AI Use in University Computing Education
Brian Harrington, Irina Zlotnikova, Gayathri Nadarajan +1
The rise of generative AI (GenAI) in higher education has prompted urgent debates surrounding academic integrity and ethical use. This study examines cross-cultural differences in…
Hubble tension in k-essence: Evidence for robust tension alleviation
Isaac Opio, Didam Duniya, Bishop Mongwane +1
The Hubble tension has come to stay as a major problem in modern cosmology as it continues to plague the standard cosmological model (CDM). As one of the viable, self-consistent…
Relativistic effects in k-essence
Didam Duniya, Isaac Opio, Bishop Mongwane +1
Relativistic effects are sensitive to subtle changes in dark energy. These effects grow on very large scales and at high redshifts, which will be the reach of upcoming surveys. We…
Dynamically close galaxy pairs from the unWISE survey: Testing the merger-AGN-star formation connection
Josephine Chishala, Roberto De Propris, Mirjana Pović
Galaxy mergers are expected to have a profound influence on the star formation histories of galaxies. It is generally expected that mergers are the main drivers of galaxy mass grow…
A note on the rational homotopy type of the projectivization of the tangent bundle of complex projective spaces
Meshach Ndlovu, Jean Baptiste Gatsinzi
In this paper, we determine the rational homotopy type of the total space of the projectivization of the complex tangent bundle $τ: \mathbb{C}^n \longrightarrow E \longrightarrow \…
A Benchmark Study of the Relativistic Plane Wave Impulse Approximation for Polarized () Reactions on the 3s state in Pb at 392 MeV
T. Mello, G. C. Hillhouse, J. P. W. Diener
The Relativistic Plane Wave Impulse Approximation (RPWIA) is benchmarked against the established Relativistic Distorted Wave Impulse Approximation (RDWIA) for exclusive proton-indu…
Investigating the imprint of quintessence in cosmic magnification
Enas Mohamed, Didam Duniya, Hassan Abdalla +1
We study cosmic magnification beyond lensing in a late-time universe dominated by quintessence and cold dark matter. The cosmic magnification angular power spectrum, especially goi…
Evolution of Cluster Alignments as Evidence of Large-scale Structure Formation in the Universe
Michael J. West, Roberto De Propris, Maret Einasto +2
The universe's large-scale structure forms a vast, interconnected network of filaments, sheets, and voids known as the cosmic web. For decades, astronomers have observed that the o…
TP-AGB stars and stellar population properties of a post-starburst galaxy at through optical and NIR spectroscopy with JWST
Davide Bevacqua, Paolo Saracco, Francesco La Barbera +11
We present a detailed optical and NIR spectral analysis of J-138717, a post-starburst galaxy at observed with JWST/NIRSpec, for which we derive a stellar mass of $3.5…
The Galaxy Zoo Catalogs for the Galaxy And Mass Assembly (GAMA) Survey
Benne W. Holwerda, Clayton Robertson, Kyle Cook +16
Galaxy Zoo is an online project to classify morphological features in extra-galactic imaging surveys with public voting. In this paper, we compare the classifications made for two…
A new perspective on the stellar Mass-Metallicity Relation of quiescent galaxies from the LEGA-C survey
D. Bevacqua, P. Saracco, A. Boecker +7
We investigate the stellar Mass-Metallicity Relation (MZR) using a sample of 637 quiescent galaxies with 10.4 <= log(M*/M ) < 11.7 selected from the LEGA-C survey at 0.6 <= z <= 1.…
Quasinormal modes of a Schwarzschild black hole within the Bondi-Sachs framework
Bishop Mongwane, Sipho Nkele, Didam G. A. Duniya +1
Studies of quasinormal modes (QNMs) of black holes have a long and well established history. Predominantly, much research in this area has customarily focused on the equations give…
Cosmic magnification in beyond-Horndeski gravity
Didam Duniya, Bishop Mongwane
Cosmic magnification is able to probe the geometry of large-scale structure on cosmological scales, thereby providing another window for probing theories of the late-time cosmic ac…
Corrected thermodynamics of nonlinear magnetic-charged black hole surrounded by perfect fluid dark matter
Ragil Brand Tsafack Ndongmo, Saleh Mahamat, Thomas Bouetou +2
In this paper, we investigate the influence of perfect fluid dark matter and quantum corrections on the thermodynamics of non-linear magnetic-charged black hole. We consider the me…
Paarl Africa Underground Laboratory (PAUL)
Robert Adam, Claire Antel, Munirat Bashir +43
Establishing a deep underground physics laboratory to study, amongst others, double beta decay, geoneutrinos, reactor neutrinos and dark matter has been discussed for more than a d…
Galaxy And Mass Assembly (GAMA): Comparing Visually and Spectroscopically Identified Galaxy Merger Samples
Alice Desmons, Sarah Brough, Cristina Martínez-Lombilla +3
We conduct a comparison of the merging galaxy populations detected by a sample of visual identification of tidal features around galaxies as well as spectroscopically-detected clos…
Modulation instability gain and localized waves by modified Frenkel-Kontorova model of higher order nonlinearity
Alphonse Houwe, Souleymanou Abbagari, Lanre Akinyemi +2
In this paper, modulation instability and nonlinear supratransmission are investigated in a one-dimensional chain of atoms using cubic-quartic nonlinearity coefficients. As a resul…
Optical spectroscopy of Be stars: peak separation of Balmer emission lines
R. K. Zamanov, K. A. Stoyanov, S. Y. Stefanov +2
The Be stars display variable optical emission lines originating in the circumstellar disc. Here we analyse high resolution spectroscopic observations of Be stars and the distance…
Galaxy and Mass Assembly (GAMA): Low-redshift Quasars and Inactive Galaxies Have Similar Neighbors
Maria B. Stone, Clare F. Wethers, Roberto de Propris +5
We explore the properties of galaxies in the proximity (within a 2 Mpc radius sphere) of Type I quasars at 0.1<z<0.35, to check whether and how an active galaxy influences th…
The star formation history and the nature of the mass-metallicity relation of passive galaxies at 1.0<z<1.4 from VANDELS
Paolo Saracco, Francesco La Barbera, Roberto De Propris +9
We derived stellar ages and metallicities [Z/H] for 70 passive early type galaxies (ETGs) selected from VANDELS survey over the redshift range 1.01.4 and stellar mas…
High Resolution X-ray Spectra of RS Ophiuchi (2006 and 2021): Revealing the cause of SSS variability
J. -U. Ness, A. P. Beardmore, M. F. Bode +9
Swift observed the SSS phase in RS Oph much fainter in 2021 than in 2006, and we compare an XMM-Newton grating spectrum on day 55.6 in 2021 (2021d55.6) to SSS Chandra and XMM-Newto…
Imprint of f(R) gravity in the cosmic magnification
Didam Duniya, Amare Abebe, Alvaro de la Cruz-Dombriz +1
f(R) gravity is one of the simplest viable modifications to General Relativity: it passes local astrophysical tests, predicts both the early-time cosmic inflation and the late-time…
Galaxy And Mass Assembly (GAMA): The Dependence of Star Formation on Surface Brightness in Low Redshift Galaxies
S. Phillipps, S. Bellstedt, M. N. Bremer +5
The star formation rate in galaxies is well known to correlate with stellar mass (the `star-forming main sequence'). Here we extend this further to explore any additional dependenc…
Discovery of Sct Components in Eclipsing Binary Systems IQ CMa, AW Men and W Vol
Burak Ulas, Ceren Ulusoy
We present the first evidence on the ~Sct type pulsations of the primary components of three eclipsing binaries IQ CMa, AW Men and W Vol in the TESS field. A comprehensive inves…