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A New Accretion Disk Around the Missing Link Binary System PSR J1023+0038
A. Patruno, A. M. Archibald, J. W. T. Hessels +7
PSR J1023+0038 is an exceptional system for understanding how slowly rotating neutron stars are spun up to millisecond rotational periods through accretion from a companion star. O…
Long-Term Radio Timing Observations of the Transition Millisecond Pulsar PSR~J1023+0038
Anne M. Archibald, Victoria M. Kaspi, Jason W. T. Hessels +3
The radio millisecond pulsar PSR J1023+0038 exhibits complex timing and eclipse behavior. Here we analyze four years' worth of radio monitoring observations of this object. We obta…
NuSTAR observations of magnetar 1E 1841-045
Hongjun An, Romain Hascoet, Victoria M. Kaspi +18
We report new spectral and temporal observations of the magnetar 1E 1841-045 in the Kes 73 supernova remnant obtained with the Nuclear Spectroscopic Telescope Array (NuSTAR). Combi…
The McGill Magnetar Catalog
S. A. Olausen, V. M. Kaspi
We present a catalog of the 26 currently known magnetars and magnetar candidates. We tabulate astrometric and timing data for all catalog sources, as well as their observed radiati…
Limits on the Number of Galactic Young Supernova Remnants Emitting in the Decay Lines of 44Ti
François Dufour, Victoria M. Kaspi
We revise the assumptions of the parameters involved in predicting the number of supernova remnants detectable in the nuclear lines of the decay chain of 44Ti. Specifically, we con…
Swift observations of 1FGL J1018.6-5856
Hongjun An, Francois Dufour, Victoria M. Kaspi +1
We report on X-ray properties of the gamma-ray binary 1FGL J1018.6-5856 using observations obtained with the Swift X-ray telescope. Using 54 observations made between MJD 55575 and…
NuSTAR discovery of a 3.76-second transient magnetar near Sagittarius A*
Kaya Mori, Eric V. Gotthelf, Shuo Zhang +20
We report the discovery of 3.76-s pulsations from a new burst source near Sgr A* observed by the NuSTAR Observatory. The strong signal from SGR J1745-29 presents a complex pulse pr…
A Massive Pulsar in a Compact Relativistic Binary
John Antoniadis, Paulo C. C. Freire, Norbert Wex +19
Many physically motivated extensions to general relativity (GR) predict significant deviations in the properties of spacetime surrounding massive neutron stars. We report the measu…
The Correlation between Dispersion Measure and X-ray Column Density from Radio Pulsars
C. He, C. -Y. Ng, V. M. Kaspi
Pulsars are remarkable objects that emit across the entire electromagnetic spectrum, providing a powerful probe of the interstellar medium. In this study, we investigate the relati…
Serendipitous Discovery of An Infrared Bow Shock Near PSR J1549-4848 with Spitzer
Zhongxiang Wang, David L. Kaplan, Patrick O. Slane +2
We report on the discovery of an infrared cometary nebula around PSR J15494848 in our Spitzer survey of a few middle-aged radio pulsars. Following the discovery, multi-wavelengt…