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The dynamical state of A548 from XMM-Newton data: X-ray and radio connection
Teyssier, R.; Govoni, F.; Giovannini, G. +5 more
Context: We present a detailed study of the X-ray properties of the galaxy cluster Abell 548b (z = 0.04), using XMM-Newton data, and discuss the connection between the thermal properties and the presence of two extended relic radio sources located at the cluster periphery.
Aims: We wish to analyze the dynamical state of the cluster and confirm…
Shock-related radio emission during coronal mass ejection lift-off?
Pohjolainen, S.
Aims: We identify the source of fast-drifting decimetric-metric radio emission that is sometimes observed prior to the so-called flare continuum emission. Fast-drift structures and continuum bursts are also observed in association with coronal mass ejections (CMEs), not only flares.
Methods: We analyse radio spectral features and images acquir…
Analysis of plasma waves observed in the inner Saturn magnetosphere
Gurnett, D. A.; Coates, A. J.; Hospodarsky, G. B. +3 more
Plasma waves observed in the Saturn magnetosphere provide an indication of the plasma population present in the rotationally dominated inner magnetosphere. Electrostatic cyclotron emissions often with harmonics and whistler mode emission are a common feature of Saturn's inner magnetosphere. The electron observations for a region near 5 RS
XMM-Newton observations of the Small Magellanic Cloud: X-ray outburst of the 6.85 s pulsar XTE J0103-728
Pietsch, W.; Haberl, F.
Context: A bright X-ray transient was seen during an XMM-Newton observation in the direction of the Small Magellanic Cloud (SMC) in October 2006.
Aims: The data from the European Photon Imaging Cameras (EPIC) allow us to accurately locate the source and to investigate its temporal and spectral behaviour.
Methods: We extracted X-ray spectra…
Analysis of the HASI accelerometers data measured during the impact phase of the Huygens probe on the surface of Titan by means of a simulation with a finite-element model
Bettanini, C.; Angrilli, F.; Zaccariotto, M.
The Huygens Atmospheric Structure Instrument (HASI) [Fulchignoni, M., Ferri, F., Angrilli, F., Bar-Nun, A., Barucci, M.A., Bianchini, G., Borucki, W., Coradini, M., Coustenis, A., Falkner, P., Flamini, E., Grard, R., Hamelin, M., Harri, A.M., Leppelmaier, G.W., Lopez-Moreno, J.J., McDonnell, J.A.M., McKay, C.P., Neubauer, F.M., Pedersen, A., Piaca…
Titan's surface from the Cassini RADAR radiometry data during SAR mode
Lorenz, R. D.; Janssen, M. A.; Lunine, J. I. +8 more
We present initial results on the calibration and interpretation of the high-resolution radiometry data acquired during the Synthetic Aperture Radar (SAR) mode (SAR-radiometry) of the Cassini Radar Mapper during its first five flybys of Saturn's moon Titan. We construct maps of the brightness temperature at the 2-cm wavelength coincident with SAR …
VLA and Effelsberg observations of the interstellar medium around the runaway star WR 124
Cichowolski, S.; Pineault, S.; Arnal, E. M. +1 more
Aims:We present very large array (VLA) and Effelsberg radio continuum and 21 cm H I line observations of the interstellar medium (ISM) surrounding the runaway star WR 124 and the nebula M 1-67. The H I data have been used to investigate the effects that a star with a strong stellar wind and a high peculiar velocity has on the ISM.
Methods: The…
Analysis and interpretation of a fast limb CME with eruptive prominence, C-flare, and EUV dimming
Filippov, B.; Koutchmy, S.; Golub, L. +3 more
Aims: Coronal mass ejections or CMEs are large dynamical solar-corona events. The mass balance and kinematics of a fast limb CME, including its prominence progenitor and the associated flare, will be compared with computed magnetic structures to look for their origin and effect.
Methods: Multi-wavelength ground-based and spaceborne observation…
On 17 22 January 2005 Events in Space Weather
Kudela, K.; Rybanský, M.; Dorotovič, I. +1 more
This contribution is a follow-up to the recent paper of Kuznetsov et al. (Contrib. Astron. Obs. Skalnaté Pleso36, 85, 2006) on the ground level enhancement (GLE) on 20 January 2005. We focused on a study of Forbush decrease (FD) of 17 - 18 and 21 - 22 January 2005, respectively. The data from the neutron monitor at Lomnický Štít (1 min counts) and…
Indications for 3 Mpc-scale large-scale structure associated with an X-ray luminous cluster of galaxies at z = 0.95
Böhringer, H.; Rosati, P.; Schwope, A. +5 more
Context: X-ray luminous clusters of galaxies at z ~ 1 are emerging as major cosmological probes and are fundamental tools to study the cosmic large-scale structure and environmental effects of galaxy evolution at large look-back times.
Aims: We present details of the newly-discovered galaxy cluster XMMU J0104.4-0630 at z = 0.947 and a probable…