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Article
A mildly relativistic wide-angle outflow in the neutron-star merger event GW170817
The observed electromagnetic emission from GW170817 suggests that a ‘cocoon’ of mildly relativistic material was released as a jet transferred its energy to the neutron-rich dynamical ejecta from the merger.
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Article
Spectroscopic identification of r-process nucleosynthesis in a double neutron-star merger
Observations of the transient associated with the gravitational-wave event GW170817 and γ-ray burst GRB 170817A reveal a bright kilonova with fast-moving ejecta, including lanthanides synthesized by rapid neut...
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Article
Broadband observations of the naked-eye γ-ray burst GRB 080319B
Long-duration γ-ray bursts (GRBs) release copious amounts of energy across the entire electromagnetic spectrum, and so provide a window into the process of black hole formation from the collapse of massive sta...
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Article
A novel explosive process is required for the γ-ray burst GRB 060614
The tidy classification system that divided γ-ray bursts (GRBs) into long-duration busts (lasting more than two seconds) and short may have had its day. The final nail in its coffin may be GRB 060614. Discover...
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Article
Relativistic ejecta from X-ray flash XRF 060218 and the rate of cosmic explosions
A link between long γ-ray bursts (GRBs) and supernovae has been established, but whether there is a similar relationship between the weaker and softer X-ray flashes and supernovae is unclear. GRB/XRF 060218, s...
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Article
The afterglow and elliptical host galaxy of the short γ-ray burst GRB 050724
Gamma-ray bursts (GRBs) are either ‘long and soft’, or ‘short and hard’. It is now clear that the long-duration type are caused by explosions of massive stars in distant star-forming galaxies. Only in recent m...
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Article
The afterglow of GRB 050709 and the nature of the short-hard γ-ray bursts
The final chapter in the long-standing mystery of the γ-ray bursts (GRBs) centres on the origin of the short-hard class of bursts, which are suspected on theoretical grounds to result from the coalescence of n...
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Article
The afterglow, redshift and extreme energetics of the γ-ray burst of 23 January 1999
Long-lived emission, known as afterglow, has now been detected from about a dozen γ-ray bursts. Distance determinations place the bursts at cosmological distances, with redshifts, z, ranging from ∼1 to 3. The ene...
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Article
Neutrino temperatures and fluxes from the LMC supernova
The observation1,2of neutrinos from the LMC supernova makes possible direct tests of the theory of supernova explosions and of properties of weakly interacting particles. Here we describe a combined analysis of t...
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Article
Neutrinos from the recent LMC supernova
In 1987, a supernova exploded in the nearby Large Magellanic Cloud. Bahcall, Dar and Piran were quick to point out in Nature that a neutrino burst from the collapsing star should have reached Earth and that, if d...
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Article
A processing ring model for SS433
THE wavelengths of the shifted optical lines in SS433 seem to show a periodic variability at a period of 160 ± 3 d (or a multiple integer thereof)1,2. We have suggested that such periodicity could arise if the li...
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Article
SS433—a massive black hole?
THE peculiar emission line object SS433 has recently been the subject of interest following new spectrophotometric observations by Margon et al.1, and previous suggestions identifying it with the supernova remnan...