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Coordinated X-ray, Ultraviolet, Optical, and Radio Observations of the PSR J1023+0038 System in a Low-mass X-ray Binary State
Slavko Bogdanov, Anne M. Archibald, Cees Bassa +14
The PSR J1023+0038 binary system hosts a neutron star and a low-mass, main-sequence-like star. It switches on year timescales between states as an eclipsing radio millisecond pulsa…
Accretion-powered pulsations in an apparently quiescent neutron star binary
Anne M. Archibald, Slavko Bogdanov, Alessandro Patruno +10
Accreting millisecond X-ray pulsars are an important subset of low-mass X-ray binaries in which coherent X-ray pulsations can be observed during occasional, bright outbursts (X-ray…
Millisecond Pulsar Scintillation Studies with LOFAR: Initial Results
Anne M. Archibald, Vladislav I. Kondratiev, Jason W. T. Hessels +1
High-precision timing of millisecond pulsars (MSPs) over years to decades is a promising technique for direct detection of gravitational waves at nanohertz frequencies. Time-variab…
NuSTAR Observations of the State Transition of Millisecond Pulsar Binary PSR J1023+0038
Shriharsh P. Tendulkar, Chengwei Yang, Hongjun An +19
We report NuSTAR observations of the millisecond pulsar - low mass X-ray binary (LMXB) transition system PSR J1023+0038 from June and October 2013, before and after the formation o…
The Green Bank Northern Celestial Cap Pulsar Survey - I: Survey Description, Data Analysis, and Initial Results
K. Stovall, R. S. Lynch, S. M. Ransom +29
We describe an ongoing search for pulsars and dispersed pulses of radio emission, such as those from rotating radio transients (RRATs) and fast radio bursts (FRBs), at 350 MHz usin…
A state change in the low-mass X-ray binary XSS J12270-4859
C. G. Bassa, A. Patruno, J. W. T. Hessels +10
Millisecond radio pulsars acquire their rapid rotation rates through mass and angular momentum transfer in a low-mass X-ray binary system. Recent studies of PSR J1824-2452I and PSR…
X-ray Observations of XSS J12270-4859 in a New Low State: A Transformation to a Disk-Free Rotation-Powered Pulsar Binary
Slavko Bogdanov, Alessandro Patruno, Anne M. Archibald +4
We present XMM-Newton and Chandra observations of the low-mass X-ray binary XSS J12270--4859, which experienced a dramatic decline in optical/X-ray brightness at the end of 2012, i…