activity
20162026
most citedSearch for an isotropic gravitational-wave background with the Parkes Pulsar Timing Array

1.2k citations · 3k across the 67 of their papers we have counts for

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12 papers · 1 filter

astro-ph.SR2026

First monitoring campaign of a Main-sequence Radio Pulse emitter: the case of CU Vir

Barnali Das, Hayley Bignall, Andrew Zic +6

CU Vir, a magnetic hot star, is the first discovered Main-sequence Radio Pulse emitter (MRP) characterized by its ability to produce periodic radio pulses via electron cyclotron ma…

astro-ph.SR2025★ 2 cited

Discovery of Main-sequence Radio Pulse emitters from widefield sky surveys

Barnali Das, Matt E. Shultz, Joshua Pritchard +6

Magnetic AB stars are known to produce periodic radio pulses by the electron cyclotron maser emission (ECME) mechanism. Only 19 such stars, known as 'Main-sequence Radio Pulse emit…

astro-ph.SR2025

VAST-MeMeS: Characterising non-thermal radio emission from magnetic massive stars using the Australian SKA Pathfinder

Barnali Das, Laura N. Driessen, Matt E. Shultz +7

Magnetic massive stars are stars of spectral types O, B and A that harbour kG strength (mostly dipolar) surface magnetic fields. Their non-thermal radio emission has been de…

astro-ph.SR2024

A two-minute burst of highly polarised radio emission originating from low Galactic latitude

Dougal Dobie, Andrew Zic, Lucy S. Oswald +19

Several sources of repeating coherent bursts of radio emission with periods of many minutes have now been reported in the literature. These "ultra-long period" (ULP) sources have n…

astro-ph.SR2024★ 1 cited

The Sydney Radio Star Catalogue: properties of radio stars at megahertz to gigahertz frequencies

Laura N. Driessen, Joshua Pritchard, Tara Murphy +12

We present the Sydney Radio Star Catalogue, a new catalogue of stars detected at megahertz to gigahertz radio frequencies. It consists of 839 unique stars with 3,405 radio detectio…

astro-ph.SR2022★ 15 cited

The Mouse that Squeaked: A small flare from Proxima Cen observed in the millimeter, optical, and soft X-ray with Chandra and ALMA

Ward S. Howard, Meredith A. MacGregor, Rachel Osten +10

We present millimeter, optical, and soft X-ray observations of a stellar flare with an energy squarely in the regime of typical X1 solar flares. The flare was observed from Proxima…

astro-ph.SR2021★ 78 cited

Discovery of an Extremely Short Duration Flare from Proxima Centauri Using Millimeter through FUV Observations

Meredith A. MacGregor, Alycia J. Weinberger, R. O. Parke Loyd +17

We present the discovery of an extreme flaring event from Proxima Cen by ASKAP, ALMA, HST, TESS, and the du Pont Telescope that occurred on 2019 May 1. In the millimeter and FUV, t…

astro-ph.SR2021★ 57 cited

A circular polarisation survey for radio stars with the Australian SKA Pathfinder

Joshua Pritchard, Tara Murphy, Andrew Zic +14

We present results from a circular polarisation survey for radio stars in the Rapid ASKAP Continuum Survey (RACS). RACS is a survey of the entire sky south of being c…

astro-ph.SR2020★ 81 cited

A Flare-Type IV Burst Event from Proxima Centauri and Implications for Space Weather

Andrew Zic, Tara Murphy, Christene Lynch +10

Studies of solar radio bursts play an important role in understanding the dynamics and acceleration processes behind solar space weather events, and the influence of solar magnetic…

astro-ph.SR2019★ 56 cited

ASKAP Detection of Periodic and Elliptically Polarized Radio Pulses from UV Ceti

Andrew Zic, Adam Stewart, Emil Lenc +9

Active M-dwarfs are known to produce bursty radio emission, and multi-wavelength studies have shown that Solar-like magnetic activity occurs in these stars. However, coherent burst…

astro-ph.SR2018★ 11 cited

Low-frequency GMRT observations of ultra-cool dwarfs

Andrew Zic, Christene Lynch, Tara Murphy +2

Observations of radio emission in about 10 per cent of ultra-cool dwarfs (UCDs) indicate the presence of strong, persistent magnetic fields in these stars. These results are in con…

astro-ph.SR2018

Meter- to Millimeter Emission from Cool Stellar Systems: Latest Results, Synergies Across the Spectrum, and Outlook for the Next Decade

Jan Forbrich, Peter K. G. Williams, Emily Drabek-Maunder +12

Radio observations of cool stellar systems provide unique information on their magnetic fields, high-energy processes, and chemistry. Buoyed by powerful new instruments (e.g. ALMA,…