Picture of automobile manufacturing plant

Driving innovations in manufacturing: Open Access research from DMEM

Strathprints makes available Open Access scholarly outputs by Strathclyde's Department of Design, Manufacture & Engineering Management (DMEM).

Centred on the vision of 'Delivering Total Engineering', DMEM is a centre for excellence in the processes, systems and technologies needed to support and enable engineering from concept to remanufacture. From user-centred design to sustainable design, from manufacturing operations to remanufacturing, from advanced materials research to systems engineering.

Explore Open Access research by DMEM...

X-ray emission from comets, cometary knots, and supernova remnants

Bingham, R. and Kellett, B. J. and Dawson, J. M. and Shapiro, V. D. and Mendis, D. A. (2000) X-ray emission from comets, cometary knots, and supernova remnants. Astrophysical Journal Supplement, 127 (2). pp. 233-237. ISSN 0067-0049

[img]
Preview
Text (Bingham-etal-AJS2000-x-ray-emission-from-comets-cometary-knots)
Bingham_etal_AJS2000_x_ray_emission_from_comets_cometary_knots.pdf - Final Published Version

Download (72kB) | Preview

Abstract

A comparison is made between one of the processes leading to cometary X-ray emission and X-rays from supernova remnants. We demonstrate that the X-ray emission in both comet and supernova is bremsstrahlung and line radiation created by energetic electrons accelerated by plasma turbulence. We further demonstrate that the most likely source of plasma turbulence is produced by counterstreaming ion populations which result from the mass loading effect or from an anisotropic distribution produced by reflecting ions from a collisionless shock. The instability that gives rise to the plasma turbulence is the modified two-stream instability of counterstreaming ions. A similar instability arises in laser-plasma interactions that have self-generating magnetic fields and flowing ions.