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NICER observations of thermonuclear bursts from 4U 1728-34: Detection of oscillations prior to the onset of two bursts
Funda Bostanci, Tugba Boztepe, Tolga Guver +12
We present temporal and time-resolved spectral analyses of all the thermonuclear X-ray bursts observed from the neutron star low-mass X-ray binary (LMXB) 4U 1728-34 with NICER from…
Simultaneous NICER and NuSTAR Observations of the Ultra-compact X-ray Binary 4U 0614+091
David Moutard, Renee Ludlam, Javier A. García +13
We present the first joint NuSTAR and NICER observations of the ultra-compact X-ray binary (UCXB) 4U 0614+091. This source shows quasi-periodic flux variations on the timescale of…
The RS Oph outburst of 2021 monitored in X-rays with NICER
Marina Orio, Keith Gendreau, Morgan Giese +19
The 2021 outburst of the symbiotic recurrent nova RS Oph was monitored with the Neutron Star Interior Composition Explorer Mission (NICER) in the 0.2-12 keV range from day one afte…
Hydrogen-triggered X-ray Bursts from SAX J1808.4-3658? The Onset of Nuclear Burning
Sierra Casten, Tod Strohmayer, Peter Bult
We present a study of weak, thermonuclear X-ray bursts from the accreting millisecond X-ray pulsar SAX J1808.4-3658. We focus on a burst observed with the Neutron Star Interior Com…
Detection of millihertz quasi-periodic oscillations in the low-mass X-ray binary 4U 1730--22 with NICER
G. C. Mancuso, D. Altamirano, P. Bult +8
We report the discovery of millihertz quasi-periodic oscillations (mHz QPOs) from the neutron star (NS) low-mass X-ray binary 4U 1730--22 using the Neutron Star Interior Compositio…
Unveiling properties of the non-thermal X-ray production in the gamma-ray binary LS 5039 using the long-term pattern of its fast X-ray variability
Hiroki Yoneda, Valenti Bosch-Ramon, Teruaki Enoto +5
Gamma-ray binary systems, a subclass of high-mass X-ray binaries, show non-thermal emissions from radio to TeV. While efficient electron acceleration is considered to take place in…