Search Publications
Correction of the ionospheric distortion on the MARSIS surface sounding echoes
Safaeinili, A.; Mouginot, J.; Kofman, W. +1 more
Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) on the Mars Express (MEX) spacecraft has made numerous measurements of the Martian surface and subsurface. However, all of these measurements are distorted by the ionosphere and must be compensated before any analysis. We have developed a technique to compensate for the ionospher…
3D Magnetic Field Configuration of the 2006 December 13 Flare Extrapolated with the Optimization Method
Ding, M. D.; Li, H.; Guo, Y. +1 more
The photospheric vector magnetic field of the active region NOAA 10930 was obtained with the Solar Optical Telescope (SOT) on board the Hinode satellite with a very high spatial resolution (about 0.3''). Observations of the two-ribbon flare on 2006 December 13 in this active region provide us a good sample to study the magnetic field configuration…
Cluster multispacecraft determination of AKR angular beaming
Pickett, J. S.; Mutel, R. L.; Christopher, I. W.
Simultaneous observations of AKR emission using the four-spacecraft Cluster array were used to make the first direct measurements of the angular beaming patterns of individual bursts. By comparing the spacecraft locations and AKR burst locations, the angular beaming pattern was found to be narrowly confined to a plane containing the magnetic field…
The Dearth of UV-Bright Stars in M32: Implications for Stellar Evolution Theory
Ferguson, Henry C.; Brown, Thomas M.; Kimble, Randy A. +3 more
Using the Space Telescope Imaging Spectrograph on the Hubble Space Telescope, we have obtained deep, far-ultraviolet images of the compact elliptical galaxy M32. When combined with earlier near-ultraviolet images of the same field, these data enable the construction of an ultraviolet color-magnitude diagram of the hot horizontal branch (HB) popula…
The azimuthal extent of three flux transfer events
Dandouras, I.; Fazakerley, A. N.; Lucek, E. A. +3 more
In early 2006, the Cluster spacecraft crossed the dayside magnetopause twice each orbit with the spacecraft at their largest separation of the entire mission (~10 000 km). In this paper, we present in situ observations at this separation size of flux transfer events (FTEs), which are a signature of transient or time-varying magnetopause reconnecti…
Integral field spectroscopy of planetary nebulae: mapping the line diagnostics and hydrogen-poor zones with VLT FLAMES
Tsamis, Y. G.; Walsh, J. R.; Barlow, M. J. +3 more
Results from the first dedicated study of Galactic planetary nebulae (PNe) by means of optical integral field spectroscopy with the Very Large Telescope Fibre Large Array Multi Element Spectrograph Argus integral field unit are presented. Three typical Galactic disc PNe have been mapped with the 11.5 × 7.2-arcsec2 Argus array: 2D spectr…
The Search for Muon Neutrinos from Northern Hemisphere Gamma-Ray Bursts with AMANDA
Kuehn, K.; Kowalski, M.; Ackermann, M. +223 more
We present the results of the analysis of neutrino observations by the Antarctic Muon and Neutrino Detector Array (AMANDA) correlated with photon observations of more than 400 gamma-ray bursts (GRBs) in the northern hemisphere from 1997 to 2003. During this time period, AMANDA's effective collection area for muon neutrinos was larger than that of …
Binarity in Cool Asymptotic Giant Branch Stars: A GALEX Search for Ultraviolet Excesses
Sahai, R.; Sánchez Contreras, C.; Gil de Paz, A. +1 more
The search for binarity in AGB stars is of critical importance for our understanding of how planetary nebulae acquire the dazzling variety of aspherical shapes which characterizes this class. However, detecting binary companions in such stars has been severely hampered due to their extreme luminosities and pulsations. We have carried out a small i…
First superburst from a classical low-mass X-ray binary transient
Brown, E. F.; in't Zand, J. J. M.; Kuulkers, E. +3 more
We report the analysis of the first superburst from a transiently accreting neutron star system with the All-Sky Monitor (ASM) on the Rossi X-ray Timing Explorer. The superburst occurred 55 days after the onset of an accretion outburst in
High energy jets in the Earth's magnetosheath: Implications for plasma dynamics and anomalous transport
Lucek, E.; Khotyaintsev, Y.; Amata, E. +16 more
High energy density jets in the magnetosheath near the Earth magnetopause were observed by Interball-1 [1]. In this paper, we continue the investigation of this important physical phenomenon. New data provided by Cluster show that the magnetosheath kinetic energy density during more than one hour exhibits an average level and a series of peaks far…