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Alexander Urban

Researcher at Columbia University

Publications -  126
Citations -  15273

Alexander Urban is an academic researcher from Columbia University. The author has contributed to research in topics: Gravitational wave & LIGO. The author has an hindex of 50, co-authored 119 publications receiving 10989 citations. Previous affiliations of Alexander Urban include Massachusetts Institute of Technology & Lawrence Berkeley National Laboratory.

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GW190814: Gravitational Waves from the Coalescence of a 23 M$_\odot$ Black Hole with a 2.6 M$_\odot$ Compact Object

R. Abbott, +1254 more
TL;DR: In this article, the authors reported the observation of a compact binary coalescence involving a 22.2 -24.3 magnitude black hole and a compact object with a mass of 2.50 -2.67 magnitude.
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Binary Black Hole Mergers in the first Advanced LIGO Observing Run

B. P. Abbott, +972 more
TL;DR: The first observational run of the Advanced LIGO detectors, from September 12, 2015 to January 19, 2016, saw the first detections of gravitational waves from binary black hole mergers as discussed by the authors.
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The structural and chemical origin of the oxygen redox activity in layered and cation-disordered Li-excess cathode materials

TL;DR: It is demonstrated how very specific local Li-excess environments around oxygen atoms necessarily lead to labile oxygen electrons that can be more easily extracted and participate in the practical capacity of cathodes.
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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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Unlocking the potential of cation-disordered oxides for rechargeable lithium batteries

TL;DR: Using ab initio computations, it is demonstrated that this unexpected behavior of the flow of lithium ions into and out of battery electrodes is due to percolation of a certain type of active diffusion channels in disordered Li-excess materials.