Search Publications
Gamma-rays from the vicinity of accreting neutron stars inside compact high-mass X-ray binaries
Bednarek, W.
The dense wind of a massive star can be captured partially by a neutron star (NS) inside a compact binary system. Depending on the parameters of the NS and the wind, the matter can penetrate the inner NS magnetosphere. At some distance from the NS, a turbulent and magnetized transition region is formed due to the balance between the magnetic press…
Solar source of energetic particles in interplanetary space during the 2006 December 13 event
Vial, J. -C.; Fazakerley, A. N.; Owen, C. J. +5 more
An X3.4 solar flare and a fast halo coronal mass ejection (CME) occurred on 2006 December 13, accompanied by a high flux of energetic particles recorded both in near-Earth space and at ground level. Our purpose is to provide evidence of flare acceleration in a major solar energetic particle (SEP) event. We first present observations from ACE/EPAM,…
An ISO/SWS study of the dust composition around S stars. A novel view of S-star dust
Heras, A. M.; Hony, S.; Molster, F. J. +1 more
Aims: We investigate the composition of the solid-state materials in the winds around S-type AGB stars. The S stars produce dust in their wind that bears a resemblance to the dust produced in some O-rich AGB stars. However, the reported resemblance is mostly based on IRAS/LRS spectra with limited spectral resolution, sensitivity, and wavelength co…
A Multiply Imaged Luminous Infrared Galaxy Behind the Bullet Cluster (1E0657-56)
Bradač, Maruša; Jones, Christine; Gonzalez, Anthony H. +3 more
We present evidence for a Spitzer-selected luminous infrared galaxy (LIRG) behind the Bullet Cluster (1E0657-56). The galaxy, originally identified as a multiply imaged source using Infrared Array Camera (IRAC) photometry, has a spectral energy distribution consistent with a highly extincted (AV ~ 3.3), strongly star forming galaxy at z…
Cone fields in SW Elysium Planitia: Hydrothermal venting on Mars?
Lanz, Julia K.; Saric, Matthias B.
We have studied a large cone field in SW Elysium Planitia that shows unique characteristics that have, as yet, not been described elsewhere on Mars. Pitted cones and cone fields are quite common on Mars and the Elysium Planitia region where they have been mainly interpreted as pseudocraters. The cones in the study area differ from cones elsewhere …
From the Cover: The near-infrared nitric oxide nightglow in the upper atmosphere of Venus
Drossart, P.; Piccioni, G.; Mills, F. P. +1 more
Results from the Huygens probe on Titan
Strobel, Darrell; Coustenis, Athena; Lebreton, Jean-Pierre +3 more
The Cassini-Huygens mission, comprising the NASA Saturn Orbiter and the ESA Huygens Probe, arrived at Saturn in late June 2004. The Huygens probe descended under parachute in Titan's atmosphere on 14 January 2005, 3 weeks after separation from the Orbiter. We discuss here the breakthroughs that the Huygens probe, in conjunction with the Cassini sp…
The Luminosity Function of Galaxies to MBgVriz ~ -14 in z ~ 0.3 Clusters
De Propris, Roberto; Harsono, Daniel
We present deep composite luminosity functions (LFs) in B, g, V, r, i, and z for six clusters at 0.14 < z < 0.40 observed with the Hubble Space Telescope Advanced Camera for Surveys. The LFs reach to an absolute magnitude of ~-14 + 5log h mag and are well fitted by a single Schechter function with M* BgVriz = -19.8, - 20.9 - 21.9…
Tracing solar wind plasma entry into the magnetosphere using ion-to-electron temperature ratio
Berchem, J.; Escoubet, C. P.; Dandouras, I. +22 more
When the solar wind Mach number is low, typically such as in magnetic clouds, the physics of the bow shock leads to a downstream ion-to-electron temperature ratio that can be notably lower than usual. We utilize this property to trace solar wind plasma entry into the magnetosphere by use of Cluster measurements in the vicinity of the dusk magnetop…
Surface Alfvén Wave Damping in a Three-Dimensional Simulation of the Solar Wind
Gombosi, T. I.; Opher, M.; Jatenco-Pereira, V. +1 more
Here we investigate the contribution of surface Alfvén wave damping to the heating of the solar wind in minima conditions. These waves are present in the regions of strong inhomogeneities in density or magnetic field (e.g., the border between open and closed magnetic field lines). Using a three-dimensional (3D) magnetohydrodynamics (MHD) model, we…