A high velocity ionised outflow and XUV photosphere in the narrow emission line quasar PG1211+143 ABSTRACT We report on the analysis of a ∼60 ksec XMM-Newton observation of the bright, narrow emission line quasar PG1211+143. Absorption lines are seen in both EPIC and RGS spectra corresponding to Hand He-like ions of Fe, S, Mg, Ne, O, N and C. The observed line energies indicate an ionised outfl...

The similarity between observed velocity structures of Al III and singly ionised species in damped Lyα systems (DLAs) suggests the presence of ionised gas in the regions where most metal absorption lines are formed. To explore the possible implications of ionisation effects we construct a simplified two-region model for DLAs consisting of an ionisation bounded region with an internal radiation ...

Abstract Aim Neuroinflammation is a secondary injury mechanism that contributes to significant mortality and morbidity with severe traumatic brain (TBI). This study aimed evaluate the temporal neuroinflammatory pattern of ionised calcium-binding adaptor molecule 1 (Iba1) transmembrane Protein 119 (TMEM119) microglia marker proteins in urine TBI patients for 7 days post-injury. Method Urine samp...

The acute toxicity of ammonia on Thulinius ruffoi (Bertolani, 1981), a eutardigrade isolated from a small waste water treatment plant (WWTP) in Poland, was estimated. Our results show that no active individuals survived a 24 h exposure to solutions equal to or higher than 125 mg/L of total ammonia nitrogen (NH3-N + NH4 (+)-N), which, under the conditions in our experiment, was equivalent to 1.1...

In a programme of observations of local luminous blue compact galaxies (BCGs) we are investigating kinematics by using tracers of both stars and ionised gas. Here we summarise our program and present new data on the local Lyman break galaxy analogue Haro 11. From spatially-resolved spectroscopy around the near-infrared Ca ii triplet, we find that its stars and ionised gas have similar velocity ...

A 100ks XMM-Newton observation of the nearby Seyfert 2 galaxy Mkn 3 offers a unique opportunity to explore the complexity of its X-ray spectrum. We find the ∼3–8 keV continuum to be dominated by reflection from cold matter, with fluorescent K-shell lines detected from Ni, Fe, Ca, Ar, S, Si and Mg. At higher energies an intrinsic power law continuum, with canonical Seyfert 1 photon index, is see...

We present results from 2.5D numerical simulations of the emergence of magnetic flux from the upper convection zone through the photosphere and chromosphere into the corona. Certain regions of the solar atmosphere are at sufficiently low temperatures to be only partially ionised, in particular the lower chromosphere. This leads to Cowling resistivities orders of magnitude larger than the Coulom...

We present new medium-resolution spectropolarimetric observations of HD 45677 in the B and R-bands. A change in polarisation is detected across Hα, Hβ and Hγ confirming that the ionised region around the star is aspherical. (Q,U) points associated with these emission lines occur away from the continuum, defining a polarisation vector which points in the same direction for each of the lines at a...