625 citations · 1.3k across the 8 of their papers we have counts for
8 papers
Self-consistent state and measurement tomography with fewer measurements
A. Stephens, J. M. Cutshall, T. McPhee +1
We describe a technique for self consistently characterizing both the quantum state of a single qubit system, and the positive-operator-valued measure (POVM) that describes measure…
In search of cool flow accretion onto galaxies where does the disk gas end?
Joss Bland-Hawthorn, Phil Maloney, Alex Stephens +2
The processes taking place in the outermost reaches of spiral disks (the 'proto-disk') are intimately connected to the build-up of mass and angular momentum in galaxies. The thinne…
Constraining GRB Emission Physics with Extensive Early-Time, Multiband Follow-up
A. Cucchiara, S. B. Cenko, J. S. Bloom +21
Understanding the origin and diversity of emission processes responsible for Gamma-ray Bursts (GRBs) remains a pressing challenge. While prompt and contemporaneous panchromatic obs…
A Photometric Redshift of z ~ 9.4 for GRB 090429B
A. Cucchiara, A. J. Levan, D. B. Fox +33
Gamma-ray bursts (GRBs) serve as powerful probes of the early Universe, with their luminous afterglows revealing the locations and physical properties of star forming galaxies at t…
A glimpse of the end of the dark ages: the gamma-ray burst of 23 April 2009 at redshift 8.3
N. R. Tanvir, D. B. Fox, A. J. Levan +59
It is thought that the first generations of massive stars in the Universe were an important, and quite possibly dominant, source of the ultra-violet radiation that reionized the hy…
New Keck Observations of Lithium in Very Metal-poor Stars
Ann Merchant Boesgaard, Megan C. Novicki, Alex Stephens
Lithium abundances have been determined in more than 100 metal-poor halo stars both in the field and in clusters. From these data we find trends of Li with both temperature and met…