We have investigated the radio polarization properties of PSR J1119−6127, a recently discovered young radio pulsar with a large magnetic field. Using pulsar-gated radio imaging data taken at a center frequency of 2496 MHz with the Australia Telescope Compact Array, we have determined a rotation measure for the pulsar of +842± 23 rad m. These data, combined with archival polarimetry data taken a...

We report the detection of pulsed X-ray emission from the binary millisecond pulsar PSR J0218+4232 in a 100 ks ROSAT HRI observation. The lightcurve deviates from a flat distribution at a ∼ 4.8σ level, showing a sharp main pulse with a duty cycle of ∼ 0.15 (350μs), compatible with smearing due to the scatter in the ROSAT clock calibration. The intrinsic width can be smaller than 100μs. There is...

We report on timing observations of the recently discovered binary pulsar PSR J1952+2630 using the Arecibo Observatory. The mildly recycled 20.7-ms pulsar is in a 9.4-h orbit with a massive, MWD > 0.93 M , white dwarf (WD) companion. We present, for the first time, a phase-coherent timing solution, with precise spin, astrometric and Keplerian orbital parameters. This shows that the characterist...

The recently discovered RRAT sources are characterized by very bright radio bursts which, while being periodically related, occur infrequently. We find bursts with the same characteristics for the known pulsar B0656+14. These bursts represent pulses from the bright end of an extended smooth pulse-energy distribution and are shown to be unlike giant pulses, giant micropulses or the pulses of nor...

BACKGROUND Many noninvasive treatments to rejuvenate photodamaged skin are characterized by an unattainable balance between effectiveness and morbidity. The demand for safe, effective procedures has fueled the emergence of plasma skin regeneration (PSR). Preliminary studies have elaborated on the safety and efficacy of PSR for facial skin; however, no evaluation in nonfacial areas has been made...

We investigate the effects of inverse Compton scattering by electrons and positrons in the unshocked winds of rotationally-powered binary pulsars. This process can scatter low energy target photons to produce gamma rays with energies from MeV to TeV. The binary radio pulsars PSR B1259−63 and PSR J0045−73 are both in close eccentric orbits around bright main sequence stars which provide a huge d...

We report on radio polarimetry observations for nine southern pulsars. Six of the nine in the sample are young, with characteristic ages under 100 kyr and high spin-down luminosities. All six show a signiÐcant degree of linear polarization. We also conÐrm a previously noticed trend in which the degree of linear polarization increases with spin-down luminosity. Where possible, we have used the r...

Despite much scrutiny the relationship between productivity and species richness remains controversial, and there is little agreement about causal processes. We present the results of a survey of 159 productivity-plant species richness (P-PSR) relationships from 131 published studies. We critically assessed each study with respect to experimental design and for the appropriateness of the surrog...

We report on a 50 ksec XMM-Newton observation of the double pulsar system J0737–3039 performed on April 2004. We present results of the spectral analysis of these data combined with the much shorter Chandra pointing performed on January 2004. Black body emission with effective temperature of 0.20 −0.02 keV (90% confidence level) and emission radius 75 +30 −9 m for a distance of 0.5 kpc (implyin...

Purpose – The primary purpose of this paper is to present a comprehensive strategy for performance, reliability and scalability (PSR) testing of multi-tier web applications. Design/methodology/approach – The strategy for PSR testing is presented primarily through examination of the intangible knowledge base in the PSR testing field. The paper also draws on relevant recent work conducted in the ...