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Science with hot astrophysical plasmas
Urdampilleta, I.; Kaastra, J. S.; Mernier, F. +5 more
We present some recent highlights and prospects for the study of hot astrophysical plasmas. Hot plasmas can be studied primarily through their X-ray emission and absorption. Most astrophysical objects, from solar system objects to the largest scale structures of the Universe, contain hot gas. In general we can distinguish collisionally ionised gas…
Strong Gravitational Lenses and Multi-Wavelength Galaxy Surveys with Akari, Herschel, SPICA and EUCLID
Serjeant, Stephen
Submillimetre and millimetre-wave surveys with Herschel and the South Pole Telescope have revolutionised the discovery of strong gravitational lenses. Their follow-ups have been greatly facilitated by the multi-wavelength supplementary data in the survey fields. The forthcoming Euclid optical/near-infrared space telescope will also detect strong g…
Double-peaked core field of flux ropes during magnetic reconnection
Feng, Xueshang; Nakamura, Rumi; Wang, Rongsheng +2 more
A flux rope event observed in the magnetotail exhibits a double-peaked core field feature. The generation of such double-peaked feature within the flux rope is explored with Hall-MHD simulations and theoretical analysis based on multiple X line reconnection. Simulations with a guide field produce flux ropes bounded by two active X lines in the thi…
How Particles in the Martian Atmosphere Influence the Thermal Protection Structure of the Descent Module EXOMARS-2
Golomazov, M. M.; Ivankov, A. A.
Methods for calculating heat and erosion impact caused by particles in the Martian atmosphere on the heat protection of the descent module EXOMARS-2 during descent in the atmosphere are presented. Atmosphere models corresponding to climatic conditions when landing on the Martian surface are investigated for the landing site Oxita Planum.
Calibration of Herschel SPIRE FTS observations at different spectral resolutions
Valtchanov, I.; Hopwood, R.; Spencer, L. +11 more
The SPIRE Fourier Transform Spectrometer on-board the Herschel Space Observatory had two standard spectral resolution modes for science observations: high resolution (HR) and low resolution (LR), which could also be performed in sequence (H+LR). A comparison of the HR and LR resolution spectra taken in this sequential mode revealed a systematic di…
Asymmetric Dark Matter in the shear-dominated universe
Iminniyaz, Hoernisa
We explore the relic abundance of asymmetric Dark Matter in shear-dominated universe in which it is assumed the universe is expanded anisotropically. The modified expansion rate leaves its imprint on the relic density of asymmetric Dark Matter particles if the asymmetric Dark Matter particles are decoupled in shear dominated era. We found the reli…
Identification of candidate millisecond pulsars from Fermi LAT observations II
Wang, Zhong-Xiang; Xing, Yi; Vadakkumthani, Jithesh +1 more
On the basis of the properties of known γ-ray millisecond pulsars (MSPs), we have selected 77 un-associated sources from the Fermi Large Area Telescope (LAT) third source catalog for the purpose of finding likely candidate MSPs. Previously, detailed LAT data analysis for 39 of them was reported, and here we report the analysis for the remaining 38…
A Photometric Study of the Near-Contact Binary XZ Persei
Michaels, E. J.
Presented are two sets of multi-band CCD photometry of the Algol-type binary XZ Persei. Photometric solutions were derived using the Wilson-Devinney program for each dataset. The solution results indicate XZ Per is a semi-detached, near-contact binary whose less-massive secondary star fills its Roche lobe. Asymmetries in the light curves were mode…
Medium-resolution échelle spectroscopy of the Red Square Nebula, MWC 922
Kaper, L.; Bally, J.; Tielens, A. G. G. M. +4 more
Context. Medium-resolution échelle spectra of the Red Square Nebula surrounding the star MWC 922 are presented. The spectra have been obtained in 2010 and 2012 using the X-shooter spectrograph mounted on the Very Large Telescope (VLT) in Paranal, Chile. The spectrum covers a wavelength range between 300 nm-2.5 µm and shows that the nebula is…
Magnetopause Plasma Parameters and Asymmetries in Solar Wind Magnetosphere Coupling
Walsh, B. M.