The nature of SN1961V has been uncertain. Its peculiar optical light curve and slow expansion velocity are similar to those of super-outbursts of luminous blue variables (LBVs), but its nonthermal radio spectral index and declining radio luminosity are consistent with decades-old supernovae (SNe). We have obtained Hubble Space Telescope STIS images and spectra of the stars in the vicinity of SN...

In this paper, we describe an interactive environment designed and created within a museum context. “Re-Tracing the Past: Exploring objects, stories and mysteries” allowed visitors to explore and investigate artefacts housed within the museums permanent collection. One interactive installation within ‘ReTracing the Past’, the ‘Radio’, allows for the exploration of previously recorded visitor st...

We are conducting a multi-wavelength (radio, optical, and X-ray) observational campaign to classify, morphologically and physically, a sample of 55 flat-spectrum radio sources dominated by structure on kpc-scales. This sample contains 22 compact-/medium-sized symmetric object candidates, a class of objects thought to be the early stages of the evolution of radio galaxies. The vast majority of t...

The radio frequency identification (RFID) is a technology for automatic identification of items, particularly in supply chain, but it is becoming increasingly important for industrial applications. Unlike barcode technology that detects the optical signals reflected from barcode labels, RFID uses radio waves to transmit the information from an RFID tag affixed to the physical object. In contras...

Tracking and retrieving the exact location of an object in a 3D environment is major challenge in many situations such as navigation and orientation inside an indoor environment. Current radio based localization techniques such as Global Positioning Systems (GPS) and cellular network data are limited by their accuracies due to relatively large wavelength of radio signals compared to accuracies ...

Radio frequency identification (RFID) is a technology that employs basic identifier of an object embedded in a chip, transmitted via radio wave, for identification. An RFID Card responds to query/interrogation irrespective of ‘Who’ holds the Card; like a key to a door. Since an attacker can possess the card, access to such object can therefore be easily compromised. This security breach is clas...

We present a high-quality X-ray spectrum in the 3–53 keV rest-frame band of the radio-loud quasar 1508+5714, by far the brightest known X-ray source at z > 4. A simple power-law model with an absorption column density equal to the Galactic value in the direction of the source provides an excellent and fully adequate fit to the data; the measured power-law photon index Γ = 1.42 −0.10. Upper limi...

The most obvious optical method for measuring the speed of a moving object is to use the Doppler effect: light reflected from the moving object will be shifted in frequency on proportion to the line of sight velocity of the object. While we are familiar with examples in the radio domain (such as police traffic radar and Doppler weather radar) and with acoustic waves (the apparent change in pitc...

in both continuum and Lyα plus continuum bands with the HST. Our images show patchy distributions of continuum and line emission with a tendency for the peaks in the two types of emission to be offset. When compared to Keck K-band images, it seems likely that the presence of dusty neutral gas is strongly influencing the UV continuum and Lyα emission. The radio and UV emission are not particular...

We have analyzed the optical and radio properties of a sample of 3CR FR I radio galaxies which have Hubble Space Telescope imaging capable of detecting optical cores. The jet powers of the FR I radio galaxies are estimated from their low-frequency radio luminosities, and the optical core luminosity is taken as an upper limit on the emission from any unobscured accretion disc. We argue that if t...