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The Rapid Reddening and Featureless Optical Spectra of the optical counterpart of GW170817, AT 2017gfo, During the First Four Days
Curtis McCully, Daichi Hiramatsu, D. Andrew Howell +17
We present the spectroscopic evolution of AT 2017gfo, the optical counterpart of the first binary neutron star (BNS) merger detected by LIGO and Virgo, GW170817. While models have…
Optical emission from a kilonova following a gravitational-wave-detected neutron-star merger
Iair Arcavi, Griffin Hosseinzadeh, D. Andrew Howell +8
The merger of two neutron stars has been predicted to produce an optical-infrared transient (lasting a few days) known as a 'kilonova', powered by the radioactive decay of neutron-…
Optical Follow-up of Gravitational-wave Events with Las Cumbres Observatory
Iair Arcavi, Curtis McCully, Griffin Hosseinzadeh +11
We present an implementation of the Gehrels et al. (2016) galaxy-targeted strategy for gravitational-wave (GW) follow-up using the Las Cumbres Observatory global network of telesco…
Origin of the heavy elements in binary neutron-star mergers from a gravitational wave event
Daniel Kasen, Brian Metzger, Jennifer Barnes +2
The cosmic origin of the elements heavier than iron has long been uncertain. Theoretical modelling shows that the matter that is expelled in the violent merger of two neutron stars…
Illuminating Gravitational Waves: A Concordant Picture of Photons from a Neutron Star Merger
M. M. Kasliwal, E. Nakar, L. P. Singer +78
Merging neutron stars offer an exquisite laboratory for simultaneously studying strong-field gravity and matter in extreme environments. We establish the physical association of an…
A GRB and Broad-lined Type Ic Supernova from a Single Central Engine
Jennifer Barnes, Paul C. Duffell, Yuqian Liu +4
Unusually high velocities (< ~0.1c) and correspondingly high kinetic energies have been observed in a subset of Type Ic supernovae (so-called "broad-lined Ic" supernovae; SNe Ic-BL…