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ENA detection in the dayside of Mars: ASPERA-3 NPD statistical study
Coates, A. J.; Kallio, E.; Fedorov, A. +32 more
The Analyzer of Space Plasma and EneRgetic Atoms (ASPERA-3) on board Mars Express is designed to study the interaction between the solar wind and the atmosphere of Mars and to characterize the plasma and neutral gas environment in near-Mars space. Neutral Particle Detectors (NPD-1 and 2), which form part of the ASPERA-3 instrument suite, are Energ…
Influence of non-stationary electromagnetic field conditions on ion pick-up at Titan: 3-D multispecies hybrid simulations
Glassmeier, K. -H.; Motschmann, U.; Simon, S.
Titan's interaction with the corotating Saturnian magnetospheric plasma is studied in terms of a three-dimensional electromagnetic hybrid model. This approach treats the electrons as a massless, charge-neutralizing fluid, whereas the ions are represented by macroparticles. The model considers two magnetospheric and three ionospheric ion species. I…
Reconnection at the dayside magnetopause: Comparisons of global MHD simulation results with Cluster and Double Star observations
Berchem, J.; Escoubet, C. P.; Balogh, A. +8 more
This study uses two conjunctions between Cluster and Double Star TC-1 spacecraft together with global magnetohydrodynamic (MHD) simulations to investigate the large-scale configuration of magnetic reconnection at the dayside magnetopause. Both events involve southward interplanetary magnetic fields with significant By components. The fi…
Comparing proton fluxes of central meridian SEP events with those predicted by SOLPENCO
Lario, D.; Aran, A.; Sanahuja, B.
We have developed an operational code, SOLPENCO, that can be used for space weather prediction schemes of solar energetic particle (SEP) events. SOLPENCO provides proton differential flux and cumulated fluence profiles from the onset of the event up to the arrival of the associated traveling interplanetary shock at the observer’s position (either …
Extragalactic X-ray surveys: AGN physics and evolution
Comastri, A.; Brusa, M.
We review the most important findings on AGN physics and cosmological evolution as obtained by extragalactic X-ray surveys and associated multiwavelength observations. We briefly discuss the perspectives for future enterprises and in particular the scientific case for an extremely deep (2-3 Ms) XMM survey
Influence of IMF draping direction and crustal magnetic field location on Martian ion beams
Barabash, S.; Lundin, R.; Grigoriev, A. +4 more
Data from the Ion Mass Analyzer (IMA) sensor of the ASPERA-3 instrument suite onboard Mars Express and data from the Magnetometer/Electron Reflectometer (MAG/ER) on Mars Global Surveyor have been analyzed to determine whether ion beam events (IBEs) are correlated with the direction of the draped interplanetary magnetic field (IMF) or the proximity…
XMM-Newton, Chandra, and CGPS observations of the Supernova Remnants G85.4+0.7 and G85.9-0.6
Jackson, M. S.; Safi-Harb, S.; Kothes, R. +1 more
We present an XMM-Newton detection of two low radio surface brightness supernova remnants (SNRs), G85.4+0.7 and G85.9-0.6, discovered with the Canadian Galactic Plane Survey (CGPS). High-resolution XMM-Newton images revealing the morphology of the diffuse emission, as well as discrete point sources, are presented and correlated with radio and Chan…
Exploring the nuclear environment of the NLS1 galaxy Arakelian 564 with XMM-Newton RGS
Page, M. J.; Branduardi-Raymont, G.; Smith, R. A. N.
Aims: We present an accurate characterisation of the high-resolution X-ray spectrum of the Narrow Line Seyfert 1 galaxy Arakelian 564 and put it in to context with other objects of its type by making a detailed comparison of their spectra.
Methods: The data are taken from 5 observations with the XMM-Newton Reflection Grating Spectrometer and f…
The Structure of the DoAr 25 Circumstellar Disk
Wilner, D. J.; Andrews, Sean M.; Qi, Chunhua +1 more
We present high spatial resolution (lsim 0.3'' ≈ 40 AU) Submillimeter Array observations of the 865 µm continuum emission from the circumstellar disk around the young star DoAr 25. Despite its bright millimeter emission, this source exhibits only a comparatively small infrared excess and low accretion rate, suggesting that the material and s…
Discovery of a Bright Transient Ultraluminous X-Ray Source, Suzaku J1305-4931 in NGC4945
Isobe, Naoki; Gandhi, Poshak; Makishima, Kazuo +5 more
An X-ray source, Suzaku J1305-4931, was discovered in the south-west arm of a nearby Seyfert II galaxy, NGC4945, at 0.5-10keV flux of 2.2×10-12erg cm-2 s-1 during a Suzaku observation conducted on 2006 January 15-17. It was undetectable in a shorter observation on 2005 August 22--23, with an upper limit of 1.7×10