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Solar system planets observed with Suzaku
Miyoshi, Yoshizumi; Ezoe, Yuichiro; Ishikawa, Kumi +7 more
Recent results of solar system planets observed with the Japanese X-ray astronomy satellite Suzaku are reviewed. Thanks to the low instrumental background and good energy resolution, X-ray CCDs onboard Suzaku are one of the best probes to study diffuse X-ray emission. An overview of the Suzaku data of Jupiter and Earth is presented, along with pre…
Coordinated Cluster/Double Star and ground-based observations of dayside reconnection signatures on 11 February 2004
Lester, M.; Dunlop, M. W.; Bogdanova, Y. V. +10 more
A number of flux transfer events (FTEs) were observed between 09:00 and 12:00 UT on 11 February 2004, during southward and dawnward IMF, while the Cluster spacecraft array moved outbound through the northern, high-altitude cusp and dayside high-latitude boundary layer, and the Double Star TC-1 spacecraft was crossing the dayside low-latitude magne…
On turbulence in the quasi-perpendicular bow shock
Meziane, K.; Hamza, A. M.
In this paper we propose to review the fundamental aspects of turbulence theories and their relevance to particle distribution functions observed by the cluster satellites in the quasi-perpendicular shock. The paper focusses on the hierarchical model describing the different levels of plasma turbulence; from the linear theory, through the quasi-li…
Properties and Expected Number Counts of Active Galactic Nuclei and Their Hosts in the Far-infrared
Ballantyne, D. R.; Draper, A. R.
Telescopes like Herschel and the Atacama Large Millimeter/submillimeter Array (ALMA) are creating new opportunities to study sources in the far-infrared (FIR), a wavelength region dominated by cold dust emission. Probing cold dust in active galaxies allows for study of the star formation history of active galactic nucleus (AGN) hosts. The FIR is a…
Contribution to the modeling of solar spicules
Koutchmy, S.; Tavabi, E.; Ajabshirizadeh, A.
Solar limb and disk spicule quasi-periodic motions have been reported for a long time, strongly suggesting that they are oscillating. In order to clear up the origin and possibly explain some solar limb and disk spicule quasi-periodic recurrences produced by overlapping effects, we present a simulation model assuming quasi-random positions of spic…
On the characteristics of tidal structures of interacting galaxies
Reshetnikov, V. P.; Mohamed, Y. H.; Sotnikova, N. Ya.
We present the results of our analysis of the geometrical tidal tail characteristics for nearby and distant interacting galaxies. The sample includes more than two hundred nearby galaxies and about seven hundred distant ones. The distant galaxies have been selected in several deep fields of the Hubble Space Telescope (HDF-N, HDF-S, HUDF, GOODS, GE…
Optical spectroscopy investigation of N2-CH4 plasma jets simulating Titan atmospheric entry conditions
Ndiaye, A. A.; Lago, V.
Planetary probes penetrating at supersonic speed into high atmosphere require the development of composite materials for thermal protection of the surface exposed to a high enthalpy flux. Rarefied arc plasmas can be used to simulate the atmospheric re-entry plasmas. The aim of this paper is to describe the latest results of optical emission measur…
Titan’s new pole: Implications for the Huygens entry and descent trajectory and landing coordinates
Lebreton, Jean-Pierre; Atkinson, David H.; Kazeminejad, Bobby
The European Space Agency's Huygens probe separated from the NASA Cassini spacecraft on 25 December 2004, after having been attached for a 7-year interplanetary journey and three orbits around Saturn. The probe reached the predefined NASA/ESA interface point on 14 January 2005 at 09:05:52.523 (UTC). It performed a successful entry and descent sequ…
Multiphase High-Velocity Gas Detected within 7 kpc Toward the M13 Globular Cluster
Welsh, Barry Y.; Lallement, Rosine; Wheatley, Jonathan
We present medium-resolution ultraviolet interstellar absorption measurements recorded with the HST-COS and FUSE spectrographs toward the post-AGB star Barnard 29 in the M13 globular cluster. Inspection of the UV spectra has revealed absorption at in the absorption profiles of the C I, C II, , C IV, N I, N II, N V, O I, ALII, Si II, Si IV, S II an…
Line Shape Effects on Intensity Measurements of Solar Features: Brightness Correction to SOHO MDI Continuum Images
Ermolli, I.; Del Moro, D.; Tritschler, A. +4 more
Continuum intensity observations obtained with the Michelson Doppler Imager (MDI) on board the SOHO mission provide long time series of filtergrams that are ideal for studying the evolution of large-scale phenomena in the solar atmosphere and their dependence on solar activity. These filtergrams, however, are not taken in a pure continuum spectral…