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iPTF14hls as a variable hyper-wind from a very massive star
Takashi J. Moriya, Paolo A. Mazzali, Elena Pian
The origin of iPTF14hls, which had Type IIP supernova-like spectra but kept bright for almost two years with little spectral evolution, is still unclear. We here propose that iPTF1…
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…
Short GRB 160821B: a reverse shock, a refreshed shock, and a well-sampled kilonova
G. P. Lamb, N. R. Tanvir, A. J. Levan +31
We report our identification of the optical afterglow and host galaxy of the short-duration gamma-ray burst GRB 160821B. The spectroscopic redshift of the host is , making…
ASTRO2020 White Paper: JWST: Probing the Epoch of Reionization with a Wide Field Time-Domain Survey
L. Wang, J. Mould, D. Baade +29
A major scientific goal of JWST is to probe the epoch of re-ionization of the Universe at z above 6, and up to 20 and beyond. At these redshifts, galaxies are just beginning to for…
An XMM-Newton look at the strongly variable radio-weak BL Lac Fermi J1544-0639
F. Ursini, L. Bassani, F. Panessa +6
Fermi J1544-0639/ASASSN-17gs/AT2017egv was identified as a gamma-ray/optical transient on May 15, 2017. Subsequent multiwavelength observations suggest that this source may belong…
A comparison between short GRB afterglows and AT2017gfo: shedding light on kilonovae properties
A. Rossi, G. Stratta, E. Maiorano +26
Multi-messenger astronomy received a great boost following the discovery of kilonova AT2017gfo, the optical counterpart of the gravitational wave source GW170817 associated with th…