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A new sample of southern radio galaxies: Host-galaxy masses and star-formation rates
(Oxford University Press, 2019)
In this study we define a new sample of distant powerful radio galaxies in order to study their host galaxy properties and provide targets for future observations of H I absorption with new radio telescopes and to understand ...
Periodic low-frequency electric field structures in a magnetized non-thermal auroral plasma
(Elsevier, 2019)
The theoretical explanation of electric field structures associated with density depletion in the Earth’s upper
ionosphere is presented. Using the quasi-neutrality hypothesis, the effect of excess energetic electron ...
The orbital periods of aa dor and ny vir
(Oxford University Press, 2011)
New timings of eclipses made between 2000 and 2010 are presented for two binary systems
with hot subdwarf primary stars. In the case of AA Dor, an sdOB star with a very cool
secondary, the period is found to be constant ...
Identifying multiple periodicities in sparse photon event time series
(Oxford University Press, 2016)
The data considered are event times (e.g. photon arrival times, or the occurrence of sharp
pulses). The source is multiperiodic, or the data could be multiperiodic because several unresolved sources contribute to the time ...
Continuing influence of shell effects at high-excitation energies
(Elsevier, 2019)
Empirical drops in ground-state nuclear polarizabilities indicate deviations from the effect of giant dipole
resonances and may reveal the presence of shell effects in semi-magic nuclei with neutron magic
numbers N = 50, ...
New formulas for the (−2) moment of the photoabsorption cross section, σ−2
(American Physical Society, 2015)
Two new formulas for the (−2) moment of the photoabsorption cross section, σ−2, have been determined,
respectively, from the 1988 photoneutron evaluation of Dietrich and Berman and a mass-dependent symmetry
energy ...
Dark energy homogeneity in general relativity: Are we applying it correctly?
(Springer, 2016)
Thus far, there does not appear to be an agreed (or adequate) definition of
homogeneous dark energy (DE). This paper seeks to define a valid, adequate homogeneity
condition for DE. Firstly, it is shown that as long as ...
Clustering of HI galaxies in the HI parkes all sky survey and arecibo legacy fast alfa survey
(Oxford University Press, 2011)
We investigate the clustering of H I-selected galaxies in the Arecibo Legacy Fast ALFA
Survey (ALFALFA) and compare results with those obtained for the H I Parkes All Sky
Survey (HIPASS). Measurements of the angular ...
Disentangling non-gaussianity, bias, and general relativistic effects in the galaxy distribution
(American Physical Society, 2012)
Local non-Gaussianity, parametrized by
f
NL
, introduces a scale-dependent bias that is strongest at large scales, precisely where general relativistic (GR) effects also become significant. With future data, it should ...
On the time delay between ultra-relativistic particles
(Elsevier, 2016)
The time delay between the receptions of ultra-relativistic particles emitted simultaneously is a useful observable for both fundamental physics and cosmology. The expression of the delay when the particles travel through ...