We present an exact calculation for the scattering of light from a single sphere made of a Faraday-active material, into first order of the external magnetic field. When the size of the sphere is small compared to the wavelength the known T-matrix for a magneto-active Rayleigh scatterer is found. We address the issue whether or not there is a so called Photonic Hall Effect-a magneto-transverse ...

We report results from a re-analysis of the BeppoSAX observation of Coma and from the analysis of a second, yet unpublished observation of the same object. From our re-analysis of the first observation we find that the statistical evidence for a hard tail is about 2σ. From the analysis of the second observation which, thanks to the lower background and the longer exposure time, is characterized...

We present high resolution images of the Faraday Rotation Measure (RM) structure of the radio galaxy PKS1246-410 at the center of the Centaurus cluster. Comparison with Hα-line and soft X-ray emission reveals a correspondence between the line-emitting gas, the soft X-ray emitting gas, regions with an excess in the RM images, and signs of depolarization. Magnetic field strengths of 25 μG, organi...

Students from the Indian Institute of Technology Bombay (IITB) are currently in the process of building a fully functional microsatellite named 'Pratham', which is slated for launch by Indian Space Research Organization (ISRO) in the fourth quarter of 2010. The satellite being built is a 260 mm cube and weighs nearly 10kg. This landmark project has completed the phases of Requirements Capture, ...

We present a path towards reconfigurable, electrically driven and integrated multiple-port optical circulators. Using this novel device architecture, we demonstrate a six-port circulator with 14.4 dB of isolation between adjacent ports, and four different working configurations. It can be straightforwardly expanded to larger port counts. Keywords—Optical isolators, optical circulators, magneto-...

There is compelling evidence that at least some clusters of galaxies are powerful sources of non-thermal radiation. In all cases where this radiation has been detected, a general trend is that high energy densities of cosmic rays and correspondingly low values of the average magnetic field are required in order to have a self-consistent picture of the multiwavelength observations. Mergers of cl...

I present high-frequency polarimetric radio observations of the radio galaxy 3C 171, in which depolarization is associated with an extended emission-line region. The radio hotspots, known to be depolarized at low radio frequencies, become significantly polarized above (observer’sframe) frequencies of 15 GHz. There is some evidence that some of the Faraday rotation structure associated with the ...

Eddy currents (also called Foucault currents[1]) are loops of electrical current induced within conductors by a changing magnetic field in the conductor, due to Faraday’s law of induction. Eddy currents flow in closed loops within conductors, in planes perpendicular to the magnetic field. They can be induced within nearby stationary conductors by a time-varying magnetic field created by anAC el...

Current and anticipated future research frontiers in magnetism and magnetic materials are discussed from a perspective of soft X-ray synchrotron utilization. Topics covered include dimensionality (including e!ects of spatial dimensions and di!ering time scales), magneto-electronics, structure/property relationships, and exploratory materials, with an emphasis on challenges that limit the unders...