Radio monitoring of transient Be/X-ray binaries and the inflow-outflow coupling of strongly-magnetized accreting neutron stars
ArXiv 2208.14903 (2022)
MeerKAT radio observations of the neutron star low-mass X-ray binary Cen X-4 at low accretion rates
ArXiv 2207.03962 (2022)
Discovery of a radio emitting neutron star with an ultra-long spin period of 76 seconds.
Nature astronomy 6:7 (2022) 828-836
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.
Discovery of a radio emitting neutron star with an ultra-long spin period of 76 seconds
ArXiv 2206.01346 (2022)
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