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Classifying galaxies according to their H I content
(Oxford University Press, 2020)
We use machine learning to classify galaxies according to their H I content, based on both their optical photometry and environmental properties. The data used for our analyses are the outputs in the range z = 0–1 from ...
J1615+5452: a remnant radio galaxy in the ELAIS-N1 field
(Oxford University Press, 2020)
We report the discovery of a remnant radio active galactic nucleus (AGN) J1615+5452 in the field of ELAIS-N1. GMRT continuum observations at 150, 325, and 610 MHz combined with archival data from the 1.4 GHz NVSS survey ...
Constraining the reionization history using deep learning from 21-cm tomography with the Square Kilometre Array
(Oxford University Press, 2020)
Upcoming 21-cm surveys with the SKA1-LOW telescope will enable imaging of the neutral hydrogen distribution on cosmological scales in the early Universe. These surveys are expected to generate huge imaging data sets that ...
Evidence for cosmic acceleration with next-generation surveys: A model-independent approach
(Oxford University Press, 2020)
We quantify the evidence for cosmic acceleration using simulations of H(z) measurements from SKA- and Euclid-like surveys. We perform a non-parametric reconstruction of the Hubble parameters and its derivative to obtain ...
One- and Two-point source statistics from the LOFAR Two-metre sky survey first data release
(ESO, 2020)
Context. The LOFAR Two-metre Sky Survey (LoTSS) will eventually map the complete Northern sky and provide an excellent
opportunity to study the distribution and evolution of the large-scale structure of the Universe.
Aims. ...
K-CLASH: Strangulation and ram pressure stripping in galaxy cluster members at 0.3 < z < 0.6
(Oxford University Press, 2020-06-26)
Galaxy clusters have long been theorized to quench the star formation of their members.
This study uses integral-field unit observations from the K-band MultiObject Spectrograph
(KMOS) – Cluster Lensing And Supernova ...
A census of the pulsar population observed with the international LOFAR station FR606 at low frequencies (25–80 MHz)
(EDP Sciences, 2020)
ontext. To date, only 69 pulsars have been identified with a detected pulsed radio emission below 100 MHz. A LOFAR-core LBA census and a dedicated campaign with the Nançay LOFAR station in stand-alone mode were carried out ...
Testing galaxy formation simulations with damped Lyman-α abundance and metallicity evolution
(Oxford University Press, 2020)
We examine the properties of damped Lyman-α absorbers (DLAs) emerging from a single set of cosmological initial conditions in two state-of-the-art cosmological hydrodynamic simulations: SIMBA and TECHNICOLOR DAWN. The ...
Constraining the growth rate by combining multiple future surveys
(IOP Publishing, 2020)
The growth rate of large-scale structure provides a powerful consistency test of
the standard cosmological model and a probe of possible deviations from general relativity.
We use a Fisher analysis to forecast constraints ...
Development and application of an HDF5 schema for SKA-scale image cube visualization
(Elsevier, 2020)
In this paper, we describe an HDF5 schema created to support the efficient visualization of the large image cubes that will be produced by SKA Phase 1 and precursor radio telescopes. We demonstrate how the “HDF5-IDIA” ...