Search Publications
Universal scaling laws for fully-developed magnetic field turbulence near and far upstream of the Earth's bow shock
Miranda, Rodrigo A.; Chian, Abraham C. -L.; Rempel, Erico L.
We analyze the multifractal scaling of the modulus of the interplanetary magnetic field near and far upstream of the Earth's bow shock, measured by Cluster and ACE, respectively, from 1 to 3 February 2002. The maximum order of the structure function is carefully estimated for each time series using two different techniques, to ensure the validity …
Evaluating the robustness of the enantioselective stationary phases on the Rosetta mission against space vacuum vaporization
Szopa, Cyril; Raulin, François; Meierhenrich, Uwe J. +4 more
The European Space Agency's Rosetta mission was launched in March 2004 in order to reach comet 67P/Churyumov-Gerasimenko by August 2014. The Cometary Sampling and Composition experiment (COSAC) onboard the Rosetta mission's lander "Philae" has been designed for the cometary in situ detection and quantification of organic molecules using gas chroma…
Study of a Coronal Mass Ejection with SOHO/UVCS and STEREO data
Susino, Roberto; Vourlidas, Angelos; Bemporad, Alessandro +1 more
We study the 3-D kinematics of a Coronal Mass Ejection (CME) using data acquired by the LASCO C2 and UVCS instruments on board SOHO, and the COR1 coronagraphs and EUVI telescopes on board STEREO. The event, which occurred on May 20, 2007, was a partial-halo CME associated with a prominence eruption. This is the first CME studied with UVCS data tha…
Propagation of normal and faster CMEs in the interplanetary medium
Shanmugaraju, A.; Umapathy, S.; Mujiber Rahman, A.
We have analyzed 101 Coronal Mass Ejection (CME) events and their associated interplanetary CMEs (ICMEs) and interplanetary (IP) shocks observed during the period 1997-2005 from the list given by Mujiber Rahman et al. (2012). The aim of the present work is to correlate the interplanetary parameters such as, the speeds of IP shocks and ICMEs, CME t…
The spatial distributions of the sources of UV solar Explosive Events at different velocities
Mendoza-Torres, J. E.
We analyze five solar Explosive Events observed in the Si IV emission line at 139.37 nm during SUMER/SoHO raster scans near disk center. The Doppler velocities from -45 km s-1 to +45 km s-1 were sorted into eleven symmetrically organized velocity bins, five equally-sized bins on each side and one bin for the line at rest. The…
New results on planetary lightning
Yair, Yoav
We present the latest observations from spacecraft and ground-based instruments in search for lightning activity in the atmospheres of planets in the solar system, and put them in context of previous research. Since the comprehensive book on planetary atmospheric electricity compiled by Leblanc et al. (2008), advances in remote sensing technology …
Detection of sub-kilometer craters in high resolution planetary images using shape and texture features
Stepinski, Tomasz F.; Bandeira, Lourenço; Ding, Wei
Counting craters is a paramount tool of planetary analysis because it provides relative dating of planetary surfaces. Dating surfaces with high spatial resolution requires counting a very large number of small, sub-kilometer size craters. Exhaustive manual surveys of such craters over extensive regions are impractical, sparking interest in designi…
What are the physical mechanisms of eruptions and CMEs?
Aulanier, Guillaume; Schmieder, Brigitte
CMEs are due to physical phenomena that drive both, eruptions and flares in active regions. Eruptions/CMEs must be driven from initially force-free current-carrying magnetic field. Twisted flux ropes, sigmoids, current lanes and pattern in photospheric current maps show a clear evidence of currents parallel to the magnetic field. Eruptions occur s…
Refinements in the data analysis of VIRTIS-M-IR Venus nightside spectra
Drossart, Pierre; Piccioni, Giuseppe; Haus, Rainer +2 more
The successful long-duration radiation measurements performed by the VIRTIS instrument aboard ESA's Venus Express spacecraft have provided an excellent collection of atmospheric and surface data that stand out due to their high temporal and spatial coverage of the planet and due to a high diversity of measurement and environmental conditions. A de…
Co-registration of Chang'E-1 stereo images and laser altimeter data with crossover adjustment and image sensor model refinement
Di, Kaichang; Hu, Wenmin; Liu, Yiliang +1 more
Topographic information is of fundamental importance for various scientific investigations in lunar and planetary exploration. To provide high-precision, seamless mapping capability, it is critical to co-register image and altimetry data, the two major data sources for topographic modeling. This paper presents a method for co-registration of Chang…