Search Publications
Automatic Determination of the Conic Coronal Mass Ejection Model Parameters
Taktakishvili, A.; Pulkkinen, A.; Oates, T.
Characterization of the three-dimensional structure of solar transients using incomplete plane of sky data is a difficult problem whose solutions have potential for societal benefit in terms of space weather applications. In this paper transients are characterized in three dimensions by means of conic coronal mass ejection (CME) approximation. A n…
Searching for X-ray Variability in the Glitching Anomalous X-ray Pulsar 1E 1841-045 in Kes 73
Zhu, Weiwei; Kaspi, Victoria M.
Anomalous X-ray pulsars (AXPs) are now established to exhibit significant X-ray variability and be prolific glitchers, with some glitches being accompanied by large radiative changes. An open issue is whether AXP glitches are generically accompanied by radiative changes, relevant for understanding magnetar physical properties. Here we report on an…
The Search for Planetary Mass Companions to Field Brown Dwarfs with HST/NICMOS
Bouy, H.; Henning, Th.; Brandner, W. +4 more
We present the results of a high-resolution spectral differential imaging survey of 12 nearby, relatively young field L dwarfs (<=1 Gyr) carried out with the Hubble Space Telescope/NICMOS to search for planetary mass companions at small physical separations from their host. The survey resolved two brown dwarf binaries: the L dwarf system Kelu-1…
Cluster Ion Spectrometry (CIS) Data in the Cluster Active Archive (CAA)
Dandouras, I.; Kistler, L. M.; Rème, H. +5 more
The Cluster Active Archive (CAA) aims at preserving the four Cluster spacecraft data, so that they are usable in the long-term by the scientific community as well as by the instrument team PIs and Co-Is. This implies that the data are filed together with the descriptive and documentary elements making it possible to select and interpret them. The …
The Magellanic Bridge: evidence for a population of X-ray binaries
Haberl, F.; Coe, M. J.; Bird, A. J. +3 more
INTEGRAL observations of the Small Magellanic Cloud region have resulted in the serendipitous detection of two transient hard X-ray sources in the Magellanic Bridge. In this paper, we present the timing and spectral characteristics of these sources across the 2-100keV energy range, which, in conjunction with their optical counterparts, demonstrate…
Broadband Suzaku Observations of IGR J16207-5129
Chaty, S.; Tomsick, J. A.; Rodriguez, J. +3 more
An analysis of IGR J16207-5129 is presented based on observations taken with Suzaku. The data set represents ~80 ks of effective exposure time in a broad energy range between 0.5 and 60 keV, including unprecedented spectral sensitivity above 15 keV. The average source spectrum is well described by an absorbed power law in which we measured a large…
XMMU J100750.5+125818: a strong lensing cluster at z = 1.082
Böhringer, H.; Pratt, G. W.; Rosati, P. +12 more
We report on the discovery of the X-ray luminous cluster XMMU J100750.5+125818 at redshift 1.082 based on 19 spectroscopic members. The cluster displays several strong lensing features. SED modeling of the lensed arc features from multicolor imaging with the VLT and the LBT reveals likely redshifts ~2.7 for the most prominent of the lensed backgro…
ARCRAIDER II: Arc search in a sample of non-Abell clusters
Schwope, A.; Schindler, S.; Erben, T. +2 more
Aims: We present a search for gravitational arcs in a unique sample of X-ray luminous, medium redshift clusters of galaxies.
Methods: The sample of clusters is called ARCRAIDER, is based on the ROSAT Bright Survey (RBS) and fulfils the following criteria: (a) X-ray luminosity ≥ 0.5 × 1045 erg/s (0.5-2 keV band), (b) redshift r…
Compositional evidence for Titan's stratospheric tilt
Irwin, P. G. J.; Teanby, N. A.; de Kok, R.
Five years of Cassini CIRS infrared spectra have been used to determine the tilt of Titan's stratospheric symmetry axis with respect to the solid body rotation axis. Measurements of HCN abundance centred around 5 mbar (125 km altitude) at equatorial latitudes show the symmetry axis is tilted by 4.0±1.5∘ in a direction 70±40∘W…
Martian atmosphere as observed by VIRTIS-M on Rosetta spacecraft
Langevin, Y.; Rauer, H.; Bellucci, G. +46 more
The Rosetta spacecraft accomplished a flyby of Mars on its way to 67P/Churyumov-Gerasimenko on 25 February 2007. In this paper we describe the measurements obtained by the M channel of the Visual and Infrared Thermal Imaging Spectrometer (VIRTIS-M) and the first scientific results derived from their analysis. The broad spectral coverage of the VIR…