Search Publications
Unexpected vertical current sheets in the magnetotail associated with northward IMF
Petrukovich, A. A.; Balogh, A.; Glassmeier, K. -H. +2 more
Fast magnetic field polarity changes detected in the quiet magnetotail by a spacecraft are usually attributed to thin cross-tail current sheet crossings. On September 14, 2001, Cluster registered several such events. However the IMF was northward for the previous 24 h and the formation of a thin current sheet was very unlikely. The multi-point ana…
XMM-Newton observation of the low-metallicity galaxy cluster A1674
Hayashida, K.; Katayama, H.; Nishino, Y.
We present the XMM-Newton observation of an X-ray faint cluster of galaxies A1674. Three regions of diffuse X-ray emission (A1674-NE, A1674-Center, and A1674-West) are detected from A1674. We measure the temperature and metal abundance of this diffuse emission. The diffuse X-ray emission from A1674-Center can be characterized by a thermal plasma w…
XMM-Newton observation of Vela shrapnel D
Katsuda, Satoru; Tsunemi, Hiroshi
The ROSAT all-sky survey discovered several 'shrapnels', showing boomerang structures outside the Vela SNR. We observed the shrapnel D in the eastern limb of the Vela SNR with the XMM-Newton satellite. There is an X-ray bright ridge structure in our FOV running from north to south. There is also an optical bright ridge structure running parallel t…
Observation of a substorm onset on 12 September 2001
Balogh, A.; Dandouras, I.; Thomsen, M. +4 more
The orbits of Polar and Cluster spacecraft in 2001-2003 are extremely well suited to investigate substorms. Here, we discuss a substorm onset on 12 September 2001 between 1800 and 1915 UT. At this time, the Polar spacecraft was at 8 Re, 0034 LT, 70° invariant latitude (IL) and the Cluster spacecraft was at 19.3 Re, 2330 LT, 77° IL. The geostationa…
Multi-phase interstellar clouds in the Vela SNR resolved with XMM-Newton
Miceli, M.; Bocchino, F.; Reale, F. +1 more
XMM-Newton spatial/spectral resolution and high effective area allow to deepen our knowledge about the shocks in Supernova Remnants and their interaction with the interstellar medium. We present the analysis of an EPIC observation of the northern rim of the Vela SNR and we compare the X-ray and optical morphology of the emission. We derive a descr…
Temporal profiles of solar energetic particle events from SOHO/EPHIN data
Kunow, H.; Muller-Mellin, R.; Gómez-Herrero, R. +3 more
Temporal profiles of energetic ions and electrons observed at 1 AU during solar energetic particle events are mainly determined by particle injection features, the observer location relative to the source region at the Sun, and the interplanetary space plasma and field conditions during particle transport. In this work, temporal profiles of 18 sol…
Cluster/rapid energetic electron observations at the dayside magnetospheric boundary
Grande, M.; Carter, M.; Balogh, A. +9 more
We study the energetic electrons by the Cluster-II Rapid instrument on a dayside high-latitude pass on the night between March 21/22, 2001. The Cluster satellites were flying outward in the pre-noon sector, passing a cusp/cleft type region roughly at midnight. Contrary to earlier observations of high fluxes of energetic particles in the high-latit…
Energetic electron observations of magnetospheric boundaries using the imaging electron spectrometers on Cluster and Polar
Grande, M.; Davies, J. A.; Daly, P. W. +7 more
Electrons with energies of several tens to several hundreds of keV provide a powerful diagnostic for the acceleration processes associated with magnetospheric boundaries and phenomena. Electrons of these energies can be detected by the imaging electron spectrometer (IES) component of the RAPID experiment onboard each of the quartet of Cluster spac…
Wavelet mapping of the intra-cluster medium emissivity and temperature structures within clusters of galaxies observed by XMM-Newton
Bijaoui, A.; Bourdin, H.; Slezak, E. +2 more
We have built two algorithms especially designed for the mapping of the intra-cluster medium emissivity and temperature, as seen by the XMM-Newton satellite using the European Photon Imaging Camera (EPIC). In both algorithms the searched parameter is firstly estimated within square resolutions elements at different spatial resolutions, then its va…