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The X-ray bursts of XTE J1739-285: a NICER sample
Peter Bult, Diego Altamirano, Zaven Arzoumanian +10
In this work we report on observations with the Neutron Star Interior Composition Explorer of the known neutron star X-ray transient XTE J1739-285. We observed the source in 2020 F…
A two-component Comptonisation model for the type-B QPO in MAXI J1348-630
Federico García, Mariano Méndez, Konstantinos Karpouzas +3
Spectral-timing analysis of the fast variability observed in X-rays is a powerful tool to study the physical and geometrical properties of the accretion/ejection flows in black-hol…
A Machine Learning Approach For Classifying Low-mass X-ray Binaries Based On Their Compact Object Nature
R. Pattnaik, K. Sharma, K. Alabarta +5
Low Mass X-ray binaries (LMXBs) are binary systems where one of the components is either a black hole or a neutron star and the other is a less massive star. It is challenging to u…
A Comprehensive X-ray Report on AT2019wey
Yuhan Yao, S. R. Kulkarni, K. C. Gendreau +25
Here, we present MAXI, SWIFT, NICER, NuSTAR and Chandra observations of the X-ray transient AT2019wey (SRGA J043520.9+552226, SRGE J043523.3+552234). From spectral and timing analy…
AstroSat Observations of the first Galactic ULX Pulsar Swift J0243.6+6124
Aru Beri, Sachindra Naik, K. P Singh +11
SwiftJ0243.6+6124, the first Galactic ultra-luminous X-ray pulsar, was observed during its 2017-2018 outburst with \emph{AstroSat} at both sub- and super-Eddington levels of accret…
A variable ionized disk wind in the black-hole candidate EXO 1846-031
Yanan Wang, Long Ji, Javier A. Garcia +88
After 34 years, the black-hole candidate EXO 1846-031 went into outburst again in 2019. We investigate its spectral properties in the hard intermediate and the soft states with NuS…