Search Publications
The X-ray luminosity function of galaxies in the Coma cluster
Finoguenov, A.; Boselli, A.; Gavazzi, G. +3 more
The XMM-Newton survey of the Coma cluster of galaxies covers an area of 1.86 square degrees with a mosaic of 16 pointings and has a total useful integration time of 400 ks. Detected X-ray sources with extent less than 10'' were correlated with cataloged galaxies in the Coma cluster region. The redshift information, which is abundant in …
Optical and near infrared observations of SN 1998bu
Sollerman, J.; Spyromilio, J.; Fransson, C. +3 more
Infrared and optical spectra of SN 1998bu at an age of one year after explosion are presented. The data show evidence for the radioactive decay of 56Co to 56Fe, long assumed to be the powering source for the supernova light curve past maximum light. The spectra provide direct evidence for at least 0.4 solar masses of iron bei…
Signature of oscillations in coronal bright points
Doyle, J. G.; Madjarska, M. S.; O'Shea, E. +1 more
A detailed study of two consecutive bright points observed simultaneously with the Coronal Diagnostic Spectrometer (CDS), the Extreme ultraviolet Imaging Telescope (EIT) and the Michelson Doppler Imager (MDI) onboard the Solar and Heliospheric Observatory (SOHO) is presented. The analysis of the evolution of the photospheric magnetic features and …
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