Search Publications
XMM-Newton observation of the most X-ray-luminous galaxy cluster RX J1347.5-1145
Schindler, S.; Gitti, M.
We report on an XMM-Newton observation of RX J1347.5-1145 (z=0.451), the most luminous X-ray cluster of galaxies currently known, with a luminosity LX = 6.0 ± 0.1 × 1045 erg/s in the [2-10] keV energy band. We present the first temperature map of this cluster, which shows a complex structure. It identifies the cool core and a…
Bimodal distribution of the autocorrelation function in gamma-ray bursts
Borgonovo, L.
Autocorrelation functions (ACFs) are studied for a sample of 16 long gamma-ray bursts (GRBs) with known redshift z, that were observed by the BATSE and Konus experiments. When corrected for cosmic time dilation, the ACF shows a bimodal distribution. A narrow width class (11 bursts) has at half-maximum a mean width τ'0=1.6 s with a relat…
The eclipsing massive X-ray binary M 33 X-7: New X-ray observations and optical identification
Pietsch, W.; Haberl, F.; Ehle, M. +3 more
The eclipsing X-ray binary
XMM-Newton probes the stellar population in Chamaeleon I South
Neuhäuser, R.; Micela, G.; Stelzer, B.
We report on a 30 ks XMM-Newton observation of the central region of the Cha I star forming cloud. The field includes a substantial fraction of the known pre-main-sequence population of Cha I South, including all thirteen known very-low mass Hα emitters. We detect two bona-fide brown dwarfs (spectral types M 7.5 and M 8) and seven Hα emitting obje…
On the structure of polar faculae on the Sun
Okunev, O. V.; Kneer, F.
Faculae on the polar caps of the Sun, in short polar faculae (PFe), are investigated. They take part in the magnetic solar cycle. Here, we study the fine structures of PFe, their magnetic fields and their dynamics on short time scales. The observations stem from several periods in 2001 and 2002. They consist of spectropolarimetric data (Stokes I a…
65 Cybele in the thermal infrared: Multiple observations and thermophysical analysis
Blommaert, J. A. D. L.; Müller, T. G.
We investigated the physical and thermal properties of
Abundances of Planetary Nebulae IC 418, IC 2165 and NGC 5882
Pottasch, S. R.; Beintema, D. A.; Feibelman, W. A. +1 more
The ISO and IUE spectra of the elliptical nebulae
Late evolution of the X-ray afterglow of GRB 030329
Ghirlanda, G.; Ghisellini, G.; Tiengo, A. +2 more
The X-ray afterglow of the Gamma-Ray Burst GRB 030329, associated with SN2003dh at z= 0.1685, has been observed with XMM-Newton 258 days after the burst explosion. A source with a flux of (6.2 ± 2.3) × 10-16 erg cm-2 s-1 (0.5-2 keV) has been detected at the GRB position. This measurement, together with a re-analysi…
Molecular and ionized gas in the tidal tail in Stephan's Quintet
Duc, P. -A.; Braine, J.; Charmandaris, V. +3 more
We have mapped with the IRAM interferometer at Plateau de Bure (PdBI) the 12CO emission towards intergalactic star forming regions located in the tidal tail stemming from NGC 7319, in the Stephan's Quintet compact group of galaxies. The 13CO emission of the same region was observed with the IRAM 30 m telescope and optical spe…
XMM-Newton observations of the ultraluminous nuclear X-ray source in M 33
Rodriguez, J.; Foschini, L.; Ho, L. C. +5 more
We present observations with XMM-Newton of M 33 X-8, the ultraluminous X-ray source (L0.5-10 keV ≈ 2× 1039 erg/s) closest to the centre of the galaxy. The best-fit model is similar to the typical model of Galactic black holes in very high state. Comparison with previous observations indicates that the source is still in a ver…