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Black Holes 'NSinc: The SA discovery that’s got astronomers in a spin
A deep scan of the sky in radio waves revealed something completely unexpected to South African astronomers: that somehow, and for some unexplained reason, supermassive black holes in one region of space are all releasing radio waves in the same direction. Could this be a vital clue in understanding how the universe was formed?
Astronomers Perplexed By Rare Alignment Of Supermassive Black Holes (Youtube video)
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Simba-c: the evolution of the thermal and chemical properties in the intragroup medium
(Oxford University Press, 2024)The newly updated GIZMO and Simba based simulation, Simba-C, with its new stellar feedback, chemical enrichment, and recalibrated AGN feedback, allows for a detailed study of the intragroup medium X-ray properties. We ... -
Cosmological constraints from the EFT power spectrum and tree-level bispectrum of 21 cm intensity maps
(Elsevier B.V., 2024)We explore the information content of 21 cm intensity maps in redshift space using the 1-loop Effective Field Theory power spectrum model and the bispectrum at tree level. The 21 cm signal contains signatures of dark matter, ... -
VERTICO and IllustrisTNG: The spatially resolved effects of environment on galactic gas
(American Astronomical Society, 2023)It has been shown in previous publications that the TNG100 simulation quantitatively reproduces the observed reduction in each of the total atomic and total molecular hydrogen gas for galaxies within massive halos, i.e., ... -
Revisiting the [C II]158μm line-intensity mapping power spectrum from the eor using non-uniform line-luminosity scatter
(Oxford University Press, 2023)Detecting the line-intensity mapping (LIM) signal from the galaxies of the epoch of reionization is an emerging tool to constrain their role in reionization. Ongoing and upcoming experiments target the signal fluctuations ... -
A comprehensive data-driven odyssey to explore the equation of state of dark energy
(Springer Nature, 2024)For the first time, we reconstruct the dark energy equation of the state parameter w from the combination of background and perturbation observations, specifically combining the Hubble parameter data from cosmic chronometer ... -
A dusty protocluster surrounding the binary galaxy herbs-70 at z = 2.3
(Oxford University Press, 2024)We report on deep SCUBA-2 observations at 850 μm and NOrthern Extended Millimetre Array (NOEMA) spectroscopic measurements at 2 mm of the environment surrounding the luminous, massive (M∗ ≈ 2 × 1011 M) Herschel-selected ... -
Kaoss: turbulent, but disc-like kinematics in dust-obscured star-forming galaxies at z ∼ 1.3–2.6
(Oxford University Press, 2024)We present spatially resolved kinematics of 27 ALMA-identified dust-obscured star-forming galaxies (DSFGs) at z ∼ 1.3–2.6, as traced by Hα emission using VLT/KMOS near-infrared integral field spectroscopy from the ‘KMOS-ALMA ... -
Shape analysis of the 4.44 MeV γ-ray line complex produced in inelastic proton scattering off 12C over the indent energy range of Ep = 30-200 MeV
(IOP Publishing, 2023)We report γ-ray spectra for the line observed at Eγ = 4.44 MeV in our previous experiments at iThemba LABS' SSC facility using 30-200 MeV proton beams to irradiate a natC target. It is actually a complex composed of several ... -
The 2024 release of the exomol database: Molecular line lists for exoplanet and other hot atmospheres
(Elsevier Ltd, 2024)The ExoMol database (www.exomol.com) provides molecular data for spectroscopic studies of hot atmospheres. These data are widely used to model atmospheres of exoplanets, cool stars and other astronomical objects, as well ... -
Towards room temperature thermochromic coatings with controllable nir ir modulation for solar heat management & smart windows applications
(Nature Research, 2024)Solar heat management & green air‑conditioning are among the major technologies that could mitigate heat islands phenomenon while minimizing significantly the CO 2 global foot‑print within the building & automotive sectors. ... -
Ba 138 (d,α) study of states in Cs 136: implications for new physics searches with xenon detectors
(American Physical Society, 2023)We used the Ba138(d,α) reaction to carry out an in-depth study of states in Cs136, up to around 2.5 MeV. In this Letter, we place emphasis on hitherto unobserved states below the first 1+ level, which are important in the ... -
The thousand-pulsar-array programme on meerkat – Viii. the subpulse modulation of 1198 pulsars
(Oxford University Press, 2023)We report on the subpulse modulation properties of 1198 pulsars using the Thousand-Pulsar-Array programme on MeerKAT. About 35 per cent of the analysed pulsars exhibit drifting subpulses that are more pronounced towards ... -
Effects of p-type-metal-doping (Ba, Cs, and Y) of the compact-TiO2 electron transporting layer on the photovoltaic properties of n-i-p perovskite solar cells
(Springer, 2023)Tailoring of charge transport properties of the electron transport layer (ETL) in solution-processible solar cells is continuously addressed not only for the performance enhancements in perovskite solar cells but also in ... -
Radial tully-fisher relation and the local variance of hubble parameter
(Oxford University Press, 2024)Utilizing the well-established radial Tully-Fisher (RTF) relation observed in a 'large' (843) sample of local galaxies, we report the maximum allowed variance in the Hubble parameter,. We estimate the total intrinsic scatter ... -
A new technique to isolate kinematically anomalous gas in H i data cubes
(Oxford University Press, 2023)H i line observations of nearby galaxies often reveal the presence of extraplanar and/or kinematically anomalous gas that deviates from the general circular flow. In this work, we study the dependence of kinematically ... -
Extragalactic magnetism with sofia (salsa legacy program). vii. a tomographic view of far-infrared and radio polarimetric observations through mhd simulations of galaxies
(IOP Publishing, 2024)The structure of magnetic fields in galaxies remains poorly constrained, despite the importance of magnetism in the evolution of galaxies. Radio synchrotron and far-infrared (FIR) polarization and polarimetric observations ... -
The wide-field, multiplexed, spectroscopic facility weave: Survey design, overview, and simulated implementation
(Oxford University Press, 2024)WEAVE, the new wide-field, massively multiplexed spectroscopic survey facility for the William Herschel Telescope, saw first light in late 2022. WEAVE comprises a new 2-deg field-of-view prime-focus corrector system, a ... -
An integrated online radioassay data storage and analytics tool for nexo
(Elsevier B.V., 2023)Large-scale low-background detectors are increasingly used in rare-event searches as experimental collaborations push for enhanced sensitivity. However, building such detectors, in practice, creates an abundance of radioassay ... -
Constraining the magnetic field geometry of the millisecond pulsar psrj0030+0451 from joint radio, thermal x-ray, and γ-ray emission
(EDP Sciences, 2023)Context. With the advent of multi-wavelength electromagnetic observations of neutron stars - spanning many decades in photon energies - from radio wavelengths up to X-rays and γ-rays, it has become possible to significantly ... -
Association between Physical Fitness and Cardiovascular
(MDPI, 2023)Firefighters perform strenuous work in dangerous and unpredictable environments requiring optimal physical conditioning. The aim of this study was to investigate the association between physical fitness and cardiovascular ...
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