Publications (13)
Single-Atom Photocatalysts on TiO2 : Insights from X-ray Absorption Spectroscopy
Yingying Li, David Morris, Peng Zhang
Surface modification of TiO2 with single-atom catalysts (SACs) is an effective strategy for enhancing photocatalytic efficiency. However, thorough characterization of SACs at the a…
Swift Observations of Gamma-Ray Burst Pulse Shapes: GRB Pulse Spectral Evolution Clarified
Jon Hakkila, Amy Lien, Takanori Sakamoto +3
Isolated Swift gamma-ray burst (GRB) pulses, like their higher-energy BATSE counterparts, emit the bulk of their pulsed emission as a hard-to-soft component that can be fitted by t…
Optical Transition Radiation Monitor for the T2K Experiment
Sampa Bhadra, Mircea Cadabeschi, Patrick de Perio +8
An Optical Transition Radiation monitor has been developed for the proton beam-line of the T2K long base-line neutrino oscillation experiment. The monitor operates in the highly ra…
POLAMI: Polarimetric Monitoring of Active Galactic Nuclei at Millimetre Wavelengths. I. The program, calibration, and calibrators data products
Ivan Agudo, Clemens Thum, Sol N. Molina +6
We describe the POLAMI program for the monitoring of all four Stokes parameters of a sample of bright radio-loud active galactic nuclei with the IRAM 30m telescope at 3.5 and 1.3mm…
Space-quality data from balloon-borne telescopes: the High Altitude Lensing Observatory (HALO)
Jason Rhodes, Benjamin Dobke, Jeffrey Booth +36
We present a method for attaining sub-arcsecond pointing stability during sub- orbital balloon flights, as designed for in the High Altitude Lensing Observatory (HALO) concept. The…
XPOL - the correlation polarimeter at the IRAM 30m telescope
Clemens Thum, Helmut Wiesemeyer, Gabriel Paubert +2
XPOL, the first correlation polarimeter at a large millimeter telescope, uses a flexible digital correlator to measure all four Stokes parameters simultaneously, i.e. the total pow…
When Atoms Choose Their Neighbors: Element-Specific Views of Local Chemical Order in High-Entropy Alloys
David Morris, Yonggang Yao, Peng Zhang
Local chemical order (LCO) is a key descriptor linking composition, atomic arrangement, and function in high-entropy alloys (HEAs), yet remains difficult to quantify. This Perspect…
High energy emission from massive stars: the precocious X-Ray recovery of Eta Carinae after January 2009 minimum
Elena Pian, Sergio Campana, Guido Chincarini +7
We observed the massive binary stellar system of Eta Carinae in the 0.3-10 keV energy range with the X-ray Telescope onboard the Swift satellite during the period 15 December 2008…
POLAMI: Polarimetric Monitoring of Active Galactic Nuclei at Millimetre Wavelengths. II. Widespread circular polarisation
Clemens Thum, Ivan Agudo, Sol N. Molina +5
We analyse the circular polarisation data accumulated in the first 7 years of the POLAMI project introduced in an accompanying paper (Agudo et al.). In the 3mm wavelength band, we…
Evaluation of Automated Image Descriptions for Visually Impaired Students
Anett Hoppe, David Morris, Ralph Ewerth
Illustrations are widely used in education, and sometimes, alternatives are not available for visually impaired students. Therefore, those students would benefit greatly from an au…
SlideImages: A Dataset for Educational Image Classification
David Morris, Eric Müller-Budack, Ralph Ewerth
In the past few years, convolutional neural networks (CNNs) have achieved impressive results in computer vision tasks, which however mainly focus on photos with natural scene conte…
BurstCube: Concept, Performance, and Status
Jacob R. Smith, Michael S. Briggs, Alessandro Bruno +26
The first simultaneous detection of a short gamma-ray burst (SGRB) with a gravitational-wave (GW) signal ushered in a new era of multi-messenger astronomy. In order to increase the…
BurstCube: A CubeSat for Gravitational Wave Counterparts
Judith Racusin, Jeremy S. Perkins, Michael S. Briggs +12
BurstCube will detect long GRBs, attributed to the collapse of massive stars, short GRBs (sGRBs), resulting from binary neutron star mergers, as well as other gamma-ray transients…