activity
20212026
most citedA census of compact sources at 162MHz: first data release from the MWA Phase II IPS Survey

10 citations · 16 across the 9 of their papers we have counts for

collaborators

9 papers

astro-ph.SR2026

Probing the Physics of the Solar Corona with High-Resolution Observations using SKA-Mid

Mark C. M. Cheung, John S. Morgan, Rohit Sharma +3

We examine the capability of the SKA-Mid telescope for probing solar coronal structure and evolution. Using radiative magnetohydrodynamics simulations of a solar flare, we synthesi…

astro-ph.SR2026

Solar, Heliospheric and Ionospheric Physics: Pathfinders, Precursors and SKAO Perspective

Pietro Zucca, Rohit Sharma, Divya Oberoi +5

The Solar, Heliospheric and Ionospheric (SHI) Physics Science Working Group of the Square Kilometre Array Observatory (SKAO) addresses the full chain of plasma processes linking th…

astro-ph.HE2026

Interplanetary scintillation-informed heliospheric modelling for the MeerKAT Pulsar Timing Array 4.5 yr dataset

Saurav Mishra, Daniel J. Reardon, Andrew Zic +9

Heliospheric density variations impart delays on pulse times of arrivals from millisecond pulsars. Improper modelling of these variations may affect gravitational wave detection an…

astro-ph.IM2026

Methods of Observing and Characterising the Ionosphere with SKA-Low

John Morgan, Biagio Forte, Kshitija Deshpande +2

The ionosphere and its behaviour critically affects ground-based radio instruments at low frequencies, and radio interferometry has been used as a probe of the ionosphere since the…

astro-ph.SR2026

Role of SKA in Advancing Remote Measurements of Magnetic Fields of Solar Coronal Mass Ejections

Devojyoti Kansabanik, Surajit Mondal, Shaheda Begum Shaik +13

Coronal Mass Ejections (CMEs) are large expulsions of magnetized plasma from the Sun into interplanetary space and are the primary drivers of extreme space weather variations. The…

astro-ph.SR2026

Probing the Solar Corona and the Solar Wind Using Angular Broadening Observations with the SKA

Peijin Zhang, John Morgan, Divya Oberoi +9

Angular broadening observations of compact radio sources provide a powerful method for probing the solar corona and solar wind. Such observations enable studies of the phase struct…

physics.space-ph2024

From terrestrial weather to space weather through the history of scintillation

Emily F. Kerrison, Ron D. Ekers, John Morgan +1

Recent observations of interplanetary scintillation (IPS) at radio frequencies have proved to be a powerful tool for probing the solar environment from the ground. But how far back…

astro-ph.IM2022★ 10 cited

A census of compact sources at 162MHz: first data release from the MWA Phase II IPS Survey

John Morgan, Rajan Chhetri, Ron Ekers

We present a catalogue of over 7000 sources from the GLEAM survey which have significant structure on sub-arcsecond scales at 162MHz. The compact nature of these sources was detect…

astro-ph.IM2021★ 6 cited

A Measurement of Source Noise at Low Frequency: Implications for Modern Interferometers

John Morgan, Ron Ekers

We report on the detection of source noise in the time domain at 162MHz with the Murchison Widefield Array. During the observation the flux of our target source Virgo A (M87) contr…