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Swift and NuSTAR observations of GW170817: detection of a blue kilonova
P. A. Evans, S. B. Cenko, J. A. Kennea +56
With the first direct detection of merging black holes in 2015, the era of gravitational wave (GW) astrophysics began. A complete picture of compact object mergers, however, requir…
The mass function of GX 339-4 from spectroscopic observations of its donor star
M. Heida, P. G. Jonker, M. A. P. Torres +1
We obtained 16 VLT/X-shooter observations of GX 339-4 in quiescence in the period May - September 2016 and detected absorption lines from the donor star in its NIR spectrum. This a…
A Systematic Search for Near-Infrared Counterparts of Nearby Ultraluminous X-ray sources (II)
K. M. López, M. Heida, P. G. Jonker +5
We present the results of our continued systematic search for near-infrared (NIR) candidate counterparts to ultraluminous X-ray sources (ULXs) within 10 Mpc. We observed 42 ULXs in…
First Detection of Mid-Infrared Variability from an Ultraluminous X-Ray Source Holmberg II X-1
Ryan M. Lau, Marianne Heida, Mansi M. Kasliwal +1
We present mid-infrared (IR) light curves of the Ultraluminous X-ray Source (ULX) Holmberg II X-1 from observations taken between 2014 January 13 and 2017 January 5 with the \texti…