We describe the construction and performance of a passive, real-time terahertz camera based on a modular, 64-element linear array of cryogenic hotspot microbolometers. A reflective conical scanner sweeps out a 2 m x 4 m (vertical x horizontal) field of view (FOV) at a standoff range of 8 m. The focal plane array is cooled to 4 K in a closed cycle refrigerator, and the signals are detected on fr...

XMM-Newton observations of the Polar SDSSJ155331.12+551614.5 reveal that all the X-ray flux emerges at energies <2 keV. The best fit to the spectrum is with a thermal plasma with kT=0.8 keV plus a 20-90 eV black body, yielding a thermal X-ray luminosity of 8.0-9.5×10 ergs s. The low temperature and X-ray luminosity, together with the lack of variation of the X-ray flux during the observations, ...

We present X-ray and radio observations of the recently-discovered bow shock pulsar wind nebula associated with PSR J0002+6216, characterizing PWN morphology, which was unresolved in previous studies. The multi-frequency, multi-epoch Very Large Array reveal a cometary tail trailing extending up to 5.3', multiple kinks along emission. presented continuum images from multi-configuration broadband...

Currently, defense transformation is driven and enabled primarily by advances in information technologies (IT) and network-centric warfare. Key characteristics of a modern transformed force include: new command, control, communications, computing, intelligence, surveillance, and reconnaissance (C4ISR), networked with weapons and platforms; shared situational awareness; more accurate and standof...

By combining tunable broadband pulse generation with the technique of nonlinear spectral compression we demonstrate a prototype scheme for highly selective detection of air molecules by backward stimulated Raman scattering. The experimental results allow to extrapolate the laser parameters required for standoff sensing based on the recently demonstrated backward atmospheric lasing.

The debate of whether Canada's healthcare system is sustainable is mired in ideology. This paper offers a framework that takes us beyond the ideological standoff with a process to deal ethically with the issue of the sustainability of publicly funded healthcare.

The nation faces a growing concern that terrorists or state actors will resort to the use of chemical or biological warfare agents against military or civilian targets. The primary defensive action available for this threat is to detect the deadly agents before they contact their intended victims. Given advance warning, people can evacuate a contaminated area, administer prophylactic medication...

Abstract. It is known that the ionospheric cross polar cap potential (CPCP) saturates when the interplanetary magnetic field (IMF) Bz becomes very large. Few studies have offered physical explanations as to why the polar cap potential saturates. We present 13 events in which the reconnection electric field (REF) goes above 12 mV/m at some time. When these events are examined as typically done i...