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Andrew J. Levan

Researcher at University of Warwick

Publications -  395
Citations -  30927

Andrew J. Levan is an academic researcher from University of Warwick. The author has contributed to research in topics: Gamma-ray burst & Galaxy. The author has an hindex of 84, co-authored 395 publications receiving 28321 citations. Previous affiliations of Andrew J. Levan include University of Hertfordshire & Kavli Institute for Theoretical Physics.

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Long γ-ray bursts and core-collapse supernovae have different environments

TL;DR: In this article, the authors show that long-duration γ-ray bursts are associated with the most extremely massive stars and may be restricted to galaxies of limited chemical evolution. But they also show that the host galaxies of the long-drone bursts are significantly fainter and more irregular than the hosts of the core-collapse supernovae.
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A gravitational-wave standard siren measurement of the Hubble constant

B. P. Abbott, +1322 more
- 02 Nov 2017 - 
TL;DR: A measurement of the Hubble constant is reported that combines the distance to the source inferred purely from the gravitational-wave signal with the recession velocity inferred from measurements of the redshift using the electromagnetic data.
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Spectroscopic identification of r-process nucleosynthesis in a double neutron star merger

Elena Pian, +90 more
- 16 Oct 2017 - 
TL;DR: The spectral identification and physical properties of a bright kilonova associated with the gravitational-wave source GW170817 and γ-ray burst GRB 170817A associated with a galaxy at a distance of 40 megaparsecs from Earth are described.
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A ‘kilonova’ associated with the short-duration γ-ray burst GRB 130603B

TL;DR: In this article, optical and near-infrared observations were used to confirm that compact-object mergers are the progenitors of short-duration γ-ray bursts and the sites of significant production of r-process elements.
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A γ-ray burst at a redshift of z ≈ 8.2

Nial R. Tanvir, +65 more
- 29 Oct 2009 - 
TL;DR: In this paper, the authors reported that GRB 090423 lies at a redshift of z approximate to 8.2, implying that massive stars were being produced and dying as GRBs similar to 630 Myr after the Big Bang.