Search Publications
The Huygens scientific data archive: Technical overview
Colombatti, Giacomo; Aboudan, Alessio; Lebreton, Jean-Pierre +31 more
The Cassini/Huygens mission was launched in October 1997, and during the third orbit around Saturn, the Huygens probe was released on course to enter Titan's atmosphere. During the descent, six science instruments provided in situ and remote sensing measurements of Titan's atmosphere and surface. Doppler tracking was performed with two Earth-based…
XMM-Newton Observations of the Red Type 1.8 Quasar 2M1049+5837: Reflection from Cold and Warm (Ionized) Matter
Wilkes, B. J.; Pounds, K. A.; Schmidt, G. D.
Chandra observations of the type 1.8, low-redshift (z = 0.115), red (J - KS ~ 2) quasar 2MASSJ 104943+583750 (2M1049+5837) indicated an unusually hard X-ray spectrum (HR ~ 0.6), suggesting obscuration of NH ~ 4 × 1022 cm-2 and a flat Γ ~ 0.4 power-law slope. A higher signal-to-noise ratio XMM-Newton obse…
EROs found behind lensing clusters. II. Empirical properties, classification, and SED modelling based on multi-wavelength observations
Kneib, J. -P.; Schaerer, D.; Pelló, R. +5 more
Aims:We study the properties and nature of extremely red galaxies (ERO, R-K≥5.6) found behind two lensing clusters and compare them with other known galaxy populations.
Methods: New HST/ACS, Spitzer (IRAC and MIPS), and Chandra/ACIS observations of the two lensing clusters Abell 1835 and AC114 have been obtained, combined with our earlier opti…
Variations of the magnetic field near Mars caused by magnetic crustal anomalies
Kallio, E.; Fedorov, A.; Janhunen, P. +2 more
The possible avenues for photoelectron transport were determined during southern hemisphere winter at Mars by using a mapping analysis of the theoretical magnetic field. Magnetic field line tracing was performed by superposing two magnetic field models: (1) magnetic field derived from a three-dimensional (3D) self-consistent quasi-neutral hybrid m…
Spatial distribution of dust in the shell elliptical NGC 5982
Del Burgo, C.; Carter, D.; Sikkema, G.
Aims:Shells in Ellipticals are peculiar faint sharp edged features that are thought to be formed by galaxy mergers. We determine the shell and dust distributions, and colours of a well-resolved shell and the underlying galaxy in NGC 5982, and compare the spatial distributions of the dust and gas phases, in order to investigate the origin of shells…
TC-1 observation of ion high-speed flow reversal in the near-Earth plasma sheet during substorm
Dandouras, I.; Reme, H.; Carr, C. M. +4 more
Based on measurements of FGM and HIA on board TC-1 at its apogee on Septem- ber 14, 2004, we analyzed the ion high-speed flows in the near-Earth plasma sheet observed during the substorm expansion phase. Strong tailward high-speed flows (Vx -350 km/s) were first seen at about X -13.2 RE in near-Earth magnetotail, one minute later the flows reverse…
Determination of reconnected flux via remote sensing
Penz, T.; Kubyshkin, I. V.; Nakamura, R. +4 more
Magnetic reconnection is one of the most fundamental processes in the magnetosphere. We present here a simple method to determine the essential parameters of reconnection such as reconnected flux and location of the reconnection site out of single spacecraft data via remote sensing. On the basis of a time-dependent reconnection model, the dependen…
Jet-driven outflows in Seyfert galaxies .
Wilson, A. S.; Rosario, D. J.; Nelson, C. H. +1 more
Growing evidence over the past decade has indicated that low-luminosity active galaxies are often associated with outflows from their nuclei. In particular, a small but important fraction of Seyfert galaxies have extended collimated radio emission on the scales of the narrow-line region (NLR). In most of these cases, the emission-line gas displays…
Discontinuity Orientation, Motion, and Thickness
Sonnerup, Bengt U. O.; Haaland, Stein E.; Paschmann, Gotz
The first light-curve analysis of eclipsing binaries observed by the INTEGRAL/OMC
Zasche, P.
Three Algol-type binaries in Cygnus constellation were selected for an analysis from a huge database of observations made by the INTEGRAL/OMC camera. These data were processed and analyzed, resulting in a first light-curve study of these neglected eclipsing binaries. The temperatures of the primary components range from 9500 K to 10,500 K and the …