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Artist's impression of an accreting neutron star
Artist's impression of an accreting neutron star launching a relativistic jet.
Credit: University of Amsterdam/ICRAR

Dr Jakob van den Eijnden

Junior Research Fellow

Research theme

  • Astronomy and astrophysics

Sub department

  • Astrophysics

Research groups

  • MeerKAT
  • Pulsars, transients and relativistic astrophysics
jakob.vandeneijnden@physics.ox.ac.uk
Telephone: 01865 273321
Denys Wilkinson Building, room 562
  • About
  • Publications

Radio monitoring of transient Be/X-ray binaries and the inflow-outflow coupling of strongly-magnetized accreting neutron stars

ArXiv 2208.14903 (2022)

Authors:

J van den Eijnden, N Degenaar, TD Russell, JCA Miller-Jones, A Rouco Escorial, R Wijnands, GR Sivakoff, JV Hernández Santisteban
Details from ArXiV

MeerKAT radio observations of the neutron star low-mass X-ray binary Cen X-4 at low accretion rates

ArXiv 2207.03962 (2022)

Authors:

J van den Eijnden, R Fender, JCA Miller-Jones, TD Russell, P Saikia, GR Sivakoff, F Carotenuto
Details from ArXiV

Discovery of a radio emitting neutron star with an ultra-long spin period of 76 seconds.

Nature astronomy 6:7 (2022) 828-836

Authors:

Manisha Caleb, Ian Heywood, Kaustubh Rajwade, Mateusz Malenta, Benjamin Stappers, Ewan Barr, Weiwei Chen, Vincent Morello, Sotiris Sanidas, Jakob van den Eijnden, Michael Kramer, David Buckley, Jaco Brink, Sara Elisa Motta, Patrick Woudt, Patrick Weltevrede, Fabian Jankowski, Mayuresh Surnis, Sarah Buchner, Mechiel Christiaan Bezuidenhout, Laura Nicole Driessen, Rob Fender

Abstract:

The radio-emitting neutron star population encompasses objects with spin periods ranging from milliseconds to tens of seconds. As they age and spin more slowly, their radio emission is expected to cease. We present the discovery of an ultra-long period radio-emitting neutron star, PSR J0901-4046, with spin properties distinct from the known spin and magnetic-decay powered neutron stars. With a spin-period of 75.88 s, a characteristic age of 5.3 Myr, and a narrow pulse duty-cycle, it is uncertain how radio emission is generated and challenges our current understanding of how these systems evolve. The radio emission has unique spectro-temporal properties such as quasi-periodicity and partial nulling that provide important clues to the emission mechanism. Detecting similar sources is observationally challenging, which implies a larger undetected population. Our discovery establishes the existence of ultra-long period neutron stars, suggesting a possible connection to the evolution of highly magnetized neutron stars, ultra-long period magnetars, and fast radio bursts.
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Discovery of a radio emitting neutron star with an ultra-long spin period of 76 seconds

ArXiv 2206.01346 (2022)

Authors:

Manisha Caleb, Ian Heywood, Kaustubh Rajwade, Mateusz Malenta, Benjamin Stappers, Ewan Barr, Weiwei Chen, Vincent Morello, Sotiris Sanidas, Jakob van den Eijnden, Michael Kramer, David Buckley, Jaco Brink, Sara Elisa Motta, Patrick Woudt, Patrick Weltevrede, Fabian Jankowski, Mayuresh Surnis, Sarah Buchner, Mechiel Christiaan Bezuidenhout, Laura Nicole Driessen, Rob Fender
Details from ArXiV

Long-term radio monitoring of the neutron star X-ray binary Swift J1858.6-0814

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 513:2 (2022) 2708-2718

Authors:

L Rhodes, RP Fender, S Motta, J van den Eijnden, DRA Williams, J Bright, GR Sivakoff
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