Search Publications
Cluster observations of Pc 1 2 waves and associated ion distributions during the October and November 2003 magnetic storms
Glassmeier, K. -H.; Rème, H.; Keiling, A. +7 more
Unusual wave activity in the Pc 1-2 frequency band (0.1-5 Hz) was observed by the Cluster spacecraft in association with the two large geomagnetic storms of late 2003. During the onset of the Hallowe'en storm on October 29, 2003, intense broadband activity between ∼0.1 and 0.6 Hz appeared at all 4 spacecraft on both sides of the magnetic equator a…
Multi-scale observations of magnetotail flux transport during IMF-northward non-substorm intervals
Owen, C. J.; Nakamura, R.; Takada, T. +7 more
Simultaneous observations by the Cluster spacecraft and SuperDARN radars are presented of magnetotail flux transport during northward, but BY-dominated IMF. Two events are discussed, which occurred on 14 August 2004 and 17 September 2005, during intervals of negative and positive IMF BY, respectively. During both intervals th…
SGR 1806-20 about two years after the giant flare: Suzaku, XMM-Newton and INTEGRAL observations
Tiengo, A.; Götz, D.; Mereghetti, S. +9 more
In December 2004, the soft gamma-ray repeater SGR 1806-20 emitted the most powerful giant flare ever observed. This probably involved a large-scale rearrangement of the magnetosphere leading to observable variations in the properties of its X-ray emission. Here we present the results of the first Suzaku observation of SGR 1806-20, together with al…
High-Resolution X-Ray Spectroscopy of the Ultracompact LMXB Pulsar 4U 1626-67
Chakrabarty, Deepto; Schulz, Norbert S.; Cottam, Jean +2 more
We report results from four recent observations of the ultracompact LMXB pulsar 4U 1626-67. These observations obtained high-resolution X-ray spectra with Chandra HETGS and XMM RGS, allowing us to study in detail the prominent Ne and O emission-line complexes. The observations were spaced over a period of 3 yr, enabling us to monitor the line regi…
The infrared compactness-temperature relation for quiescent and starburst galaxies
Elbaz, D.; Chanial, P.; Vigroux, L. +3 more
Context: IRAS observations show the existence of a correlation between the infrared luminosity L_IR and dust temperature Td in star-forming galaxies, in which larger L_IR leads to higher dust temperature. The L_IR -Td relation is commonly seen as reflecting the increase in dust temperature in galaxies with higher star formati…
The Energy-dependent X-Ray Timing Characteristics of the Narrow-Line Seyfert 1 Mrk 766
Turner, T. J.; Papadakis, I.; Reeves, J. N. +3 more
We present the energy-dependent power spectral density (PSD) and cross spectral properties of Mrk 766, obtained from combining data obtained during an XMM-Newton observation spanning six revolutions in 2005 with data obtained from an XMM-Newton long look in 2001. The PSD shapes and rms-flux relations are found to be consistent between the 2001 and…
Suzaku Observations of the Centaurus Cluster: Absence of Bulk Motions in the Intracluster Medium
Fabian, Andrew C.; Sanders, Jeremy S.; Kelley, Richard L. +13 more
The Centaurus cluster (z=0.0104) was observed with the X-ray Imaging Spectrometer (XIS) onboard the Suzaku X-ray satellite in three pointings, one centered on the cluster core and the other two offset by ±8' in declination. To search for possible bulk motions of the intracluster medium, the central energy of a He-like Fe K line (at a rest-frame en…
Civa
Bibring, J. -P.; Langevin, Y.; Poulet, F. +5 more
CIVA (Comet Infrared and Visible Analyser) is an integrated set of imaging instruments, designed to characterize the 360∘ panorama (CIVA-P) as seen from the Rosetta Lander Philae, and to study surface and subsurface samples (CIVA-M). CIVA-P is a panoramic stereo camera, while CIVA-M is an optical microscope coupled to a near infrared mi…
Localized Enhancements of Fe+10 Density in the Corona as Observed in Fe XI 789.2 nm during the 2006 March 29 Total Solar Eclipse
Morgan, Huw; Habbal, Shadia Rifai; Jaeggli, Sarah +5 more
The first ever image of the full solar corona in the Fe XI 789.2 nm spectral line was acquired during the total solar eclipse of 2006 March 29. Several striking features stand out in the processed image: (1) The emission extended out to at least 3 Rsolar in streamers. (2) A bubble-like structure, occupying a cone of about 45° and reachi…
HST/ACS observations of shell galaxies: inner shells, shell colours and dust
Peletier, R. F.; Balcells, M.; Valentijn, E. A. +3 more
Context: Shells in Elliptical Galaxies are faint, sharp-edged features, believed to provide evidence for a merger event. Accurate photometry at high spatial resolution is needed to learn on presence of inner shells, population properties of shells, and dust in shell galaxies.
Aims: Learn more about the origin of shells and dust in early type g…