Search Publications
Pitch angle distributions of energetic electrons at Saturn
Krupp, N.; Krimigis, S. M.; Mitchell, D. G. +5 more
Pitch angle distributions of energetic electrons (110-365 keV) at Saturn are statistically analyzed for 2005-2009. Using a nondipolar model magnetic field, pitch angle distributions are mapped to the magnetospheric equator and sorted by equatorial crossing distance. The results are quantified using a standard function for the pitch angle distribut…
INTEGRAL: Science Highlights and Future Prospects
Wilms, Jörn; Winkler, Christoph; Ubertini, Pietro +1 more
ESA's hard X-ray and soft gamma-ray observatory INTEGRAL is covering the 3 keV to 10 MeV energy band, with excellent sensitivity during long and uninterrupted observations of a large field of view (∼100 square degrees), with ms time resolution and keV energy resolution. It links the energy band of pointed soft X-ray missions such as XMM-Newton wit…
A large Hα line forming region for the massive interacting binaries β Lyrae and υ Sagitarii
Chesneau, O.; Goldfinger, P. J.; Sturmann, J. +16 more
Aims: This study aims at constraining the properties of two interacting binary systems by measuring their continuum-forming region in the visible and the forming regions of some emission lines, in particular Hα, using optical interferometry.
Methods: We have obtained visible medium (R ~ 1000) spectral resolution interferometric observati…
HerMES: Lyman Break Galaxies Individually Detected at 0.7 <= z <= 2.0 in GOODS-N with Herschel/SPIRE
Pérez-Fournon, I.; Rodighiero, G.; Ilbert, O. +41 more
As part of the Herschel Multi-tiered Extragalactic Survey we have investigated the rest-frame far-infrared (FIR) properties of a sample of more than 4800 Lyman break galaxies (LBGs) in the Great Observatories Origins Deep Survey North field. Most LBGs are not detected individually, but we do detect a sub-sample of 12 objects at 0.7 < z < 1.6…
Location of Saturn's northern infrared aurora determined from Cassini VIMS images
Brown, R. H.; Baines, K. H.; Dougherty, M. K. +6 more
The location of Saturn's northern infrared aurora is described in detail using 12 selected images acquired by Cassini VIMS during 2006-2008. Bright main oval arcs and prevalent polar features are displayed, which do not exhibit a preferred local time or spatial extent. The average equatorward limit of the aurora was determined using a best fit cir…
EUV spectroscopy of the Venus dayglow with UVIS on Cassini
Esposito, L. W.; Gérard, J. -C.; Hubert, B. +4 more
We analyze EUV spatially-resolved dayglow spectra obtained at 0.37 nm resolution by the UVIS instrument during the Cassini flyby of Venus on 24 June 1999, a period of high solar activity level. Emissions from OI, OII, NI, CI and CII and CO have been identified and their disc average intensity has been determined. They are generally somewhat bright…
Cluster observations of trapped ions interacting with magnetosheath mirror modes
Escoubet, C. P.; Soucek, J.
Mirror modes are among the most intense low frequency plasma wave phenomena observed in the magnetosheaths of magnetized planets. They appear as large amplitude non-propagating fluctuations in the magnetic field magnitude and plasma density. These structures are widely accepted to represent a non-linear stage of the mirror instability, dominant in…
Oscillatory motions observed in eruptive filaments
Koutchmy, S.; Baudin, F.; Bocchialini, K. +2 more
Context. The origin of the variable component of the solar wind is of great intrinsic interest for heliophysics and spaceweather, e.g. the initiation of coronal mass ejections and the problem of mass loss of all stars. It is also related to the physics of coronal neutral sheets and streamers, which occur above lines of magnetic polarity reversal. …
South Pole Telescope Detections of the Previously Unconfirmed Planck Early Sunyaev-Zel'dovich Clusters in the Southern Hemisphere
Gladders, M. D.; Rest, A.; Foley, R. J. +60 more
We present South Pole Telescope (SPT) observations of the five galaxy cluster candidates in the southern hemisphere which were reported as unconfirmed in the Planck Early Sunyaev-Zel'dovich (ESZ) sample. One cluster candidate, PLCKESZ G255.62-46.16, is located in the 2500 deg2 SPT SZ survey region and was reported previously as SPT-CL J…
Heavy-ion flux enhancement in the vicinity of the Martian ionosphere during CIR passage: Mars Express ASPERA-3 observations
Fedorov, A.; Barabash, S.; Futaana, Y. +6 more
A characteristic heavy-ion signature observed in the vicinity of the Martian ionosphere during passages of Corotating Interaction Region (CIR) structures in solar wind is reported. We analyzed data obtained by the IMA/ASPERA-3 onboard the Mars Express (MEX) from September to October 2007. We compared the solar wind velocity at Mars derived from a …