32 citations · 75 across the 14 of their papers we have counts for
14 papers
Beyond ΛCDM with the SKA Observatory -- I: Probing Gravity on Cosmological Scales
S. Camera, C. Addis, S. L. Guedezounme +26
General relativity (GR) is currently the best description of the gravitational interaction at our disposal and is one of the foundations of the concordance cosmological model. For…
Cosmology from HI galaxy surveys with the SKA
Ainulnabilah Nasirudin, Philip Bull, Ziad Sakr +8
The 21cm line from neutral hydrogen is expected to be a ubiquitous (albeit faint) tracer of galaxies in the late Universe. With SKAO-MID, large wide-field surveys of several millio…
Cosmology with Tully-Fisher HI Galaxy Surveys
Joël Mayor, Anthony Carr, Khaled Said +7
The SKA Observatory will enable measurements of the Tully-Fisher relation for statistical samples of HI selected galaxies out to unprecedented depths and redshifts thanks to its un…
Observational Frontiers in the post-EoR 21-cm Intensity Mapping: Lessons from the SKA Pathfinders
Khandakar Md Asif Elahi, Somnath Bharadwaj, Philip Bull +21
The 21-cm line from neutral hydrogen has long been recognised as a promising tracer of the large-scale structure of the Universe. The line is weak however, making individual galaxy…
Bayesian power spectrum estimation with modelling of systematic effects in delay-fringe rate space
Sohini Dutta, Philip Bull, Jacob Burba +3
Observing the Epoch of Reionisation using 21cm radio interferometry has proven to be a challenging task. Extraction of the extremely faint redshifted signal is complicated by the p…
Predicted number counts and clustering of Hi galaxies from future radio surveys
Ainulnabilah Nasirudin, Philip Bull, Isabelle Ye
The 21cm emission line from neutral hydrogen (HI) contained within galaxies provides a way to make accurate spectroscopic redshift determinations at radio frequencies. Large arrays…
Prospects for measuring the Doppler magnification dipole with LSST and DESI
Isabelle Ye, Philip Bull, Caroline Guandalin +2
We forecast the detectability of the Doppler magnification dipole with a joint analysis of galaxy spectroscopic redshifts and size measurements. The Doppler magnification arises fr…
Bayesian recalibration of flux scale factors in diffuse radio maps using low-resolution absolute radiometers
Ainulnabilah Nasirudin, Philip Bull
The Haslam 408 MHz all-sky map is widely used as a template to model the diffuse Galactic synchrotron emission at radio and microwave frequencies. Recent studies have suggested tha…
Joint Bayesian calibration and map-making for intensity mapping experiments
Zheng Zhang, Philip Bull, Mario G. Santos +1
Line-intensity mapping (LIM) is an emerging cosmological technique that traces large-scale structure through the integrated spectral-line emission of unresolved sources. Reconstruc…
RHINO: A large horn antenna for detecting the 21cm global signal
Philip Bull, Ahmed El-Makadema, Hugh Garsden +11
The sky-averaged brightness temperature of the 21cm line from neutral hydrogen provides a sensitive probe of the thermal state of the intergalactic medium, particularly before and…
Characterizing Beam Errors for Radio Interferometric Observations of Reionization
Ainulnabilah Nasirudin, David Prelogovic, Steven G. Murray +2
A limiting systematic effect in 21-cm interferometric experiments is the chromaticity due to the coupling between the sky and the instrument. This coupling is sourced by the instru…
The Impact of Realistic Foreground and Instrument Models on 21cm Epoch of Reionization Experiments
Ainulnabilah Nasirudin, Steven Murray, Cathryn Trott +3
Predictions for the ability of 21-cm interferometric experiments to discriminate Epoch of Reionization (EoR) signal models are typically limited by the simplicity of data models, w…
Calibration and 21-cm Power Spectrum Estimation in the Presence of Antenna Beam Variations
Ronniy C. Joseph, C. M. Trott, R. B. Wayth +1
Detecting a signal from the Epoch of Reionisation (EoR) requires an exquisite understanding of galactic and extra-galactic foregrounds, low frequency radio instruments, instrumenta…
Modelling the stochasticity of high-redshift halo bias
Ainulnabilah Nasirudin, Ilian T. Iliev, Kyungjin Ahn
A very large dynamic range with simultaneous capture of both large- and small-scales in the simulations of cosmic structures is required for correct modelling of many cosmological…