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A re-establishing jet during an X-ray re-brightening of the Be/X-ray binary Swift J0243.6+6124
J. van den Eijnden, N. Degenaar, T. D. Russell +5
Transient Be/X-ray binary systems, wherein a compact object accretes from a Be-companion star, can show giant and periastron outbursts. During the decay of their giant outbursts, s…
The radio-bright accreting millisecond X-ray pulsar IGR J17591-2342
T. D. Russell, N. Degenaar, R. Wijnands +4
IGR J175912342 is a 527-Hz accreting millisecond X-ray pulsar that was discovered in outburst in 2018 August. In this paper, we present quasi-simultaneous radio and X-ray monito…
Swift observations of the dwarf nova ASASSN-18fs
A. S. Parikh, R. Wijnands
The All Sky Automated Survey for SuperNovae (ASAS-SN) reported a possible Galactic dwarf nova ASASSN-18fs on 2018 March 19 at 13.2 mag in the V band, with a quiescent magnitu…
Consistent accretion-induced heating of the neutron-star crust in MXB 1659-29 during two different outbursts
A. S. Parikh, R. Wijnands, L. S. Ootes +10
Monitoring the cooling of neutron-star crusts heated during accretion outbursts allows us to infer the physics of the dense matter present in the crust. We examine the crust coolin…
Dramatic spectral transition of X-ray pulsar GX 304-1 in low luminous state
Sergey S. Tsygankov, Alicia Rouco Escorial, Valery Suleimanov +5
We report on the discovery of a dramatic change in the energy spectrum of the X-ray pulsar GX 304-1 appearing at low luminosity. Particularly, we found that the cutoff power-law sp…
Quiescent X-ray variability in the neutron star Be/X-ray transient GRO J1750-27
A. Rouco Escorial, R. Wijnands, L. S. Ootes +5
The Be/X-ray transient GRO J1750-27 exhibited a type-II (giant) outburst in 2015. After the source transited to quiescence, we triggered our multi-year Chandra monitoring programme…