Search Publications
A Survey of Star Clusters in the M31 Southwest Field: UBVRI Photometry and Multiband Maps
Narbutis, D.; Vansevičius, V.; Kodaira, K. +2 more
A new survey of star clusters in the southwest field of the M31 disk based on the high-resolution Subaru Suprime-Cam observations is presented. The UBVRI aperture CCD photometry catalog of 285 objects (V lesssim 20.5 mag; 169 of them identified for the first time) is provided. Each object is supplemented with multiband color maps presented in the …
Investigation into the Subsurface Magnetic Structure in an Emerging Flux Region on the Sun Based on a Comparison between Hinode's Observations and Numerical Simulations
Magara, T.
In this Letter we report a result of investigating the structure of subsurface magnetic field in an emerging flux region on the Sun, which was observed by Hinode. The data obtained by Hinode captured well the structure end evolution of the emerging flux region, showing the appearance of small magnetic features that lead to a well-developed bipolar…
PSR J0737-3039: Interacting Pulsars in X-Rays
Tiengo, A.; Mereghetti, S.; Esposito, P. +2 more
We present the results of a ~230 ks long X-ray observation of the relativistic double-pulsar system PSR J0737-3039 obtained with the XMM-Newton satellite in 2006 October. We confirm the detection in X-rays of pulsed emission from PSR J0737-3039A (PSR A), mostly ascribed to a soft nonthermal power-law component (Γ ~ 3.3) with a 0.2-3 keV luminosity…
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…