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A Coherent Radio Burst from an X-Ray Neutron Star in the Carina Nebula

The Astrophysical Journal Letters American Astronomical Society 985:1 (2025) L3-L3

Authors:

KM Rajwade, J Tian, G Younes, B Posselt, B Stappers, Z Wadiasingh, ED Barr, MC Bezuidenhout, M Caleb, F Jankowski, M Kramer, I Pastor-Marazuela, M Surnis

Abstract:

Abstract The neutron star zoo comprises several subpopulations that range from energetic magnetars and thermally emitting X-ray neutron stars to radio-emitting pulsars. Despite studies over the last five decades, it has been challenging to obtain a clear physical link between the various populations of neutron stars, vital to constrain their formation and evolutionary pathways. Here we report the detection of a burst of coherent radio emission from a known radio-quiet, thermally emitting neutron star 2XMM J104608.7−594306 in the Carina Nebula. The burst has a distinctive sharp rise followed by a decay made up of multiple components, which is unlike anything seen from other radio-emitting neutron stars. It suggests an episodic event from the neutron star surface, akin to transient radio emission seen from magnetars. The radio burst confirms that the X-ray source is a neutron star and suggests a new link between these apparently radio-quiet X-ray-emitting sources and other transient or persistent radio-emitting neutron stars. It also suggests that a common physical mechanism for emission might operate over a range of magnetic field strengths and neutron star ages. We propose that 2XMM J104608.7−594306 straddles the boundary between young, energetic neutron stars and their evolved radio-emitting cousins and may bridge these two populations. The detection of such a radio burst also shows that other radio-quiet neutron stars may also emit such sporadic radio emission that has been missed by previous radio surveys and highlights the need for regular monitoring of this unique subpopulation of neutron stars.
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Relativistic ejecta from stellar mass black holes: insights from simulations and synthetic radio images

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 540:1 (2025) 1084-1106

Authors:

Katie Savard, James H Matthews, Rob Fender, Ian Heywood
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The Ejection of Transient Jets in Swift J1727.8−1613 Revealed by Time-dependent Visibility Modeling

The Astrophysical Journal Letters American Astronomical Society 984:2 (2025) l53

Authors:

Callan M Wood, James CA Miller-Jones, Arash Bahramian, Steven J Tingay, He-Xin Liu, Diego Altamirano, Rob Fender, Elmar Körding, Dipankar Maitra, Sera Markoff, David M Russell, Thomas D Russell, Craig L Sarazin, Gregory R Sivakoff, Roberto Soria, Alexandra J Tetarenko, Valeriu Tudose
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The origin of the very-high-energy radiation along the jet of Centaurus A

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 539:4 (2025) 3697-3713

Authors:

Cainã de Oliveira, James H Matthews, Vitor de Souza
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Relativistic ejecta from stellar mass black holes: insights from simulations and synthetic radio images

(2025)

Authors:

Katie Savard, James H Matthews, Rob Fender, Ian Heywood
More details from the publisher