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- W2963257112 abstract "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 to study its quiescent behaviour. The programme was designed to follow the cooling of a potentially heated neutron-star crust due to accretion of matter during the preceding outburst, similar to what we potentially have observed before in two other Be/X-ray transients, namely 4U 0115+63 and V 0332+53. However, unlike for these other two systems, we do not find any strong evidence that the neutron-star crust in GRO J1750−27 was indeed heated during the accretion phase. We detected the source at a rather low X-ray luminosity (∼10 33 erg s −1 ) during only three of our five observations. When the source was not detected it had very low-luminosity upper limits (< 10 32 erg s −1 ; depending on assumed spectral model). We interpret these detections and the variability observed as emission likely due to very low-level accretion onto the neutron star. We also discuss why the neutron-star crust in GRO J1750−27 might not have been heated while the ones in 4U 0115+63 and V 0332+53 possibly were." @default.
- W2963257112 created "2019-07-30" @default.
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- W2963257112 date "2019-09-27" @default.
- W2963257112 modified "2023-10-18" @default.
- W2963257112 title "Quiescent X-ray variability in the neutron star Be/X-ray transient GRO J1750−27" @default.
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- W2963257112 doi "https://doi.org/10.1051/0004-6361/201834327" @default.
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