324 citations · 4.9k across the 84 of their papers we have counts for
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Identification of a Population of X-ray Emitting Massive Stars in the Galactic Plane
G. E. Anderson, B. M. Gaensler, D. L. Kaplan +15
We present X-ray, infrared, optical and radio observations of four previously unidentified Galactic plane X-ray sources, AX J163252-4746, AX J184738-0156, AX J144701-5919 and AX J1…
Evidence for a Massive Neutron Star from a Radial-Velocity Study of the Companion to the Black Widow Pulsar PSR B1957+20
M. H. van Kerkwijk, R. Breton, S. R. Kulkarni
The most massive neutron stars constrain the behavior of ultra-dense matter, with larger masses possible only for increasingly stiff equations of state. Here, we present evidence t…
The polar Catalysmic Variable 1RXS J173006.4+033813
Varun B. Bhalerao, Marten H. van Kerkwijk, Fiona A. Harrison +3
We report the discovery of 1RXS J173006.4+033813, a polar cataclysmic variable with a period of 120.21 min. The white dwarf primary has a magnetic field of B = 42+6-5 MG, and the s…
The Directly Imaged Planet around the Young Solar Analog 1RXS J160929.1-210524: Confirmation of Common Proper Motion, Temperature and Mass
David Lafrenière, Ray Jayawardhana, Marten H. van Kerkwijk
Giant planets are usually thought to form within a few tens of AU of their host stars, and hence it came as a surprise when we found what appeared to be a planetary mass (~0.008 Ms…
Sub-Chandrasekhar White Dwarf Mergers as the Progenitors of Type Ia Supernovae
Marten H. van Kerkwijk, Philip Chang, Stephen Justham
Type Ia supernovae are generally thought to be due to the thermonuclear explosions of carbon-oxygen white dwarfs with masses near the Chandrasekhar mass. This scenario, however, ha…
The (Double) White Dwarf Binary SDSS 1257+5428
S. R. Kulkarni, M. H. van Kerkwijk
SDSS 1257+5428 is a white dwarf in a close orbit with a companion that has been suggested to be a neutron star. If so, it hosts the closest known neutron star, and its existence im…
Extinction and Distance to Anomalous X-ray Pulsars from X-ray Scattering Halos
A. Rivera-Ingraham, M. H. van Kerkwijk
We analyze the X-ray scattering halos around three Galactic Anomalous X-ray Pulsars (AXPs) in order to constrain the distance and the optical extinction of each source. We obtain s…
Observations of Doppler Boosting in Kepler Lightcurves
Marten H. van Kerkwijk, Saul A. Rappaport, Rene P. Breton +3
Among the initial results from Kepler were two striking lightcurves, for KOI 74 and KOI 81, in which the relative depths of the primary and secondary eclipses showed that the more…