Search Publications
Intermediate polars in the Swift/BAT survey: spectra and white dwarf masses
Greiner, J.; Ajello, M.; Osborne, J. +1 more
Context: White dwarf masses in cataclysmic variables are difficult to determine accurately, but are fundamental for understanding binary system parameters, as well as binary evolution.
Aims: We investigate the X-ray spectral properties of a sample of Intermediate Polars (IP) detected above 15 keV to derive the masses of their accreting white d…
The secondary eclipse of the transiting exoplanet CoRoT-2b
Mazeh, T.; Aigrain, S.; Alapini, A. +5 more
We present a study of the light curve of the transiting exoplanet CoRoT-2b, aimed at detecting the secondary eclipse and measuring its depth. The data were obtained with the CoRoT satellite during its first run of more than 140 days. After filtering the low frequencies with a pre-whitening technique, we detect a 0.0060±0.0020% secondary eclipse ce…
Thermal emission, shock modification, and X-ray emitting ejecta in SN 1006
Miceli, M.; Bocchino, F.; Orlando, S. +6 more
Context: Efficient particle acceleration can modify the structure of supernova remnants. We present the results of a combined analysis of the XMM-Newton EPIC archive observations of SN 1006.
Aims: We attempt to describe the spatial distribution of the physical and chemical properties of the X-ray emitting plasma at the shock front. We investig…
From outburst to quiescence: the decay of the transient AXP XTE J1810-197
Campana, S.; Tiengo, A.; Götz, D. +10 more
Aims: XTE J1810-197 is the first transient anomalous X-ray pulsar ever discovered. Its highly variable X-ray flux allowed us to study the timing and spectral emission properties of a magnetar candidate over a flux range of about two orders of magnitude.
Methods: We analyzed nine XMM-Newton observations of XTE J1810-197 collected over a four ye…
Accurate fundamental parameters of CoRoT asteroseismic targets. The solar-like stars HD 49933, HD 175726, HD 181420, and HD 181906
Bruntt, H.
Context: The CoRoT satellite has provided high-quality light curves of several solar-like stars. Analysis of these light curves provides oscillation frequencies that make it possible to probe the interior of the stars. However, additional constraints on the fundamental parameters of the stars are important for the theoretical modelling to be succe…
A candidate tidal disruption event in the Galaxy cluster Abell 3571
Greiner, J.; Esquej, P.; Salvato, M. +8 more
Context: Tidal disruption events are possible sources of temporary nuclear activity in galactic nuclei and can be considered as good indicators of the existence of supermassive black holes in the centers of galaxies.
Aims: A new X-ray source has been detected serendipitously with ROSAT in a PSPC pointed observation of the galaxy cluster A3571.…
The size distribution of magnetic bright points derived from Hinode/SOT observations
Möstl, C.; Veronig, A.; Utz, D. +3 more
Context: Magnetic bright points (MBPs) are small-scale magnetic features in the solar photosphere. They may be a possible source of coronal heating by rapid footpoint motions that cause magnetohydrodynamical waves. The number and size distribution are of vital importance in estimating the small scale-magnetic-field energy.
Aims: The size distr…
Resolved 24.5 micron emission from massive young stellar objects
Onaka, T.; Kataza, H.; Hoare, M. G. +8 more
Context: Massive young stellar objects (MYSO) are surrounded by massive dusty envelopes, whose physical structure and geometry are determined by the star formation process.
Aims: Our principal aim is to establish the density structure of MYSO envelopes on scales of ~1000 AU. This constitutes an increase of a factor ~10 in angular resolution co…
CAIXA: a catalogue of AGN in the XMM-Newton archive. II. Multiwavelength correlations
Bianchi, S.; Ponti, G.; Guainazzi, M. +2 more
Aims: The availability of large amounts of multiwavelength data allows us to perform an extensive statistical analysis to look for correlations between different parameters of AGN. The physical implications of these correlations, when considered within the framework of current AGN models, can be enlightening in the resolution of the problems and t…
The secondary eclipse of CoRoT-1b
Mazeh, T.; Aigrain, S.; Alapini, A. +33 more
The transiting planet CoRoT-1b is thought to belong to the pM-class of planets, in which the thermal emission dominates in the optical wavelengths. We present a detection of its secondary eclipse in the CoRoT white channel data, whose response function goes from ~400 to ~1000 nm. We used two different filtering approaches, and several methods to e…