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Article
Sub-second periodicity in a fast radio burst
Fast radio bursts (FRBs) are millisecond-duration flashes of radio waves that are visible at distances of billions of light years1. The nature of their progenitors and their emission mechanism remain open astroph...
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Article
A repeating fast radio burst source in a globular cluster
Fast radio bursts (FRBs) are flashes of unknown physical origin1. The majority of FRBs have been seen only once, although some are known to generate multiple flashes2,3. Many models invoke magnetically powered ne...
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Article
Multi-scale feedback and feeding in the closest radio galaxy Centaurus A
Supermassive black holes and supernova explosions at the centres of active galaxies power cycles of outflowing and inflowing gas that affect galactic evolution and the overall structure of the Universe1,2. While ...
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Article
Detection of microgauss coherent magnetic fields in a galaxy five billion years ago
Magnetic fields play a pivotal role in the physics of interstellar medium in galaxies 1 , but there are few observational constraints on how they evolve across cosmic time ...
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Article
Giant magnetized outflows from the centre of the Milky Way
Two giant, linearly polarized radio lobes have been found emanating from the Galactic Centre, and are thought to originate in a biconical, star-formation-driven outflow from the Galaxy’s central 200 parsecs th...
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Article
Magnetic Fields in Supernova Remnants and Pulsar-Wind Nebulae
We review the observations of supernova remnants (SNRs) and pulsar-wind nebulae (PWNe) that give information on the strength and orientation of magnetic fields. Radio polarimetry gives the degree of order of m...
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Article
Low-Mach-number turbulence in interstellar gas revealed by radio polarization gradients
Turbulence is a well-studied phenomenon in disciplines ranging from meteorology to cardiology, but astrophysical turbulence — acting over physical scales spanning 1015 orders of magnitude — stretches current theo...
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Chapter and Conference Paper
A Long Overdue Synthesis Image of Centaurus A
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Article
PSR J1119–6127 and the X-ray emission from high magnetic field radio pulsars
The existence of radio pulsars having inferred magnetic fields in the magnetar regime suggests that possible transition objects could be found in the radio pulsar population. The discovery of such an object w...
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Chapter and Conference Paper
PSR J1119–6127 and the X-ray emission from high magnetic field radio pulsars
The existence of radio pulsars having inferred magnetic fields in the magnetar regime suggests that possible transition objects could be found in the radio pulsar population. The discovery of such an object wo...
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Article
An expanding radio nebula produced by a giant flare from the magnetar SGR 1806–20
On 27 December last year, SGR1806–20, a soft γ-ray repeater in Sagittarius, released a giant flare that has been called the brightest explosion ever recorded. SGRs are X-ray stars that sporadically emit low-en...
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Article
A giant γ-ray flare from the magnetar SGR 1806–20
On 27 December last year, SGR1806–20, a soft γ-ray repeater in Sagittarius, released a giant flare that has been called the brightest explosion ever recorded. SGRs are X-ray stars that sporadically emit low-en...
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Chapter and Conference Paper
SN 1987A at Radio Wavelengths
SN1987A has an intrinsic radio luminosity some four orders of magnitude less than SN1993J at maximum, largely a reflection of the tenuous wind from the progenitor of SN1987A before explosion. Both remnants hav...
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Chapter and Conference Paper
Radio Polarimetry in the Sothern Galactic Plane Survey
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Chapter and Conference Paper
Pulsar Bow Shocks as Probes of Warm Neutral Gas
Pulsars have mean space velocities ≳500 km s−1. The consequent ram pressure results in tight confinement of the star’s energetic wind, driving a bow shock into the surrounding medium. Pulsar bow shocks have long ...
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Chapter and Conference Paper
The Structure of Galactic Hydrogen on the Largest Scales
In the past five years studies of Galactic neutral hydrogen (H i) have undergone a resurgence, led primarily by the International Galactic Plane Survey (IGPS). The IGPS is in the process of imaging the H i throug...
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Article
A large age for the pulsar B1757-24 from an upper limit on its proper motion
The ‘characteristic age’1 of a pulsar is usually considered to approximate its true age, but this assumption has led to some puzzling results, including the fact that many pulsars with small characteristic ages h...
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Chapter and Conference Paper
Long-Term Variability of Extragalactic Sources at 843 MHZ
Time variability is commonly observed in the most compact extragalactic radio sources. Low-frequency variability (LFV)—at frequencies <1 GHz—is thought to arise through two different mechanisms, intrinsic and ext...
