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Identification of strontium in the merger of two neutron stars
Darach Watson, Camilla J. Hansen, Jonatan Selsing +15
Half of all the elements in the universe heavier than iron were created by rapid neutron capture. The theory for this astrophysical `-process' was worked out six decades ago and…
Discovery and Identification of MAXI J1621-501 as a Type I X-ray Burster with a Super-Orbital Period
Nicholas M. Gorgone, Chryssa Kouveliotou, Hitoshi Negoro +26
MAXI J1621-501 is the first Swift/XRT Deep Galactic Plane Survey transient that was followed up with a multitude of space missions (NuSTAR, Swift, Chandra, NICER, INTEGRAL, and MAX…
The X-ray Polarization Probe mission concept
Keith Jahoda, Henric Krawczynski, Fabian Kislat +100
The X-ray Polarization Probe (XPP) is a second generation X-ray polarimeter following up on the Imaging X-ray Polarimetry Explorer (IXPE). The XPP will offer true broadband polarim…
Formation Rates and Evolution Histories of Magnetars
Paz Beniamini, Kenta Hotokezaka, Alexander van der Horst +1
We constrain the formation rate of Galactic magnetars directly from observations. Combining spin-down rates, magnetic activity, and association with supernova remnants, we put a 2$…
Magnetars as Astrophysical Laboratories of Extreme Quantum Electrodynamics: The Case for a Compton Telescope
Zorawar Wadiasingh, George Younes, Matthew G. Baring +14
A next generation of Compton and pair telescopes that improve MeV-band detection sensitivity by more than a decade beyond current instrumental capabilities will open up new insight…
Detailed multi-wavelength modelling of the dark GRB 140713A and its host galaxy
A. B. Higgins, A. J. van der Horst, R. L. C. Starling +8
We investigate the afterglow of GRB 140713A, a gamma-ray burst (GRB) that was detected and relatively well-sampled at X-ray and radio wavelengths, but was not present at optical an…