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A study of a long duration B9 flare-CME event and associated shock
Srivastava, A. K.; Chandra, R.; Chen, P. F. +2 more
We present and discuss here the observations of a small long duration GOES B-class flare associated with a quiescent filament eruption, a global EUV wave and a CME on 2011 May 11. The event was well observed by the Solar Dynamics Observatory (SDO), GONG H α , STEREO and Culgoora spectrograph. As the filament erupted, ahead of the filament we obser…
The SSDC contribution to the improvement of knowledge by means of 3D data projections of minor bodies
Longobardo, Andrea; Palomba, Ernesto; Zinzi, Angelo +6 more
The latest developments of planetary exploration missions devoted to minor bodies required new solutions to correctly visualize and analyze data acquired over irregularly shaped bodies.
ASI Space Science Data Center (SSDC - ASI, formerly ASDC - ASI Science Data Center) worked on this task since early 2013, when started developing the web tool…Added-value interfaces to asteroid photometric and spectroscopic data in the Gaia database
Muinonen, Karri; Granvik, Mikael; O'Mullane, William +7 more
We present two added-value interfaces (AVIs) for analyzing photometric and spectroscopic data observed by the Gaia satellite. The Gaia Added-Value Interface for Temporal Analysis (GAVITEA) is used to calculate an estimate for the spin state and shape of an asteroid from its photometric data, and the Gaia Added-Value Interface for Spectral Classifi…
A statistical study of CME-Preflare associated events
Youssef, M.; Mawad, Ramy
We investigated the relationship of associated CME-Preflare during the solar period 1996-2010. We found 292 CME-Preflare associated events (∼2%). Those associated events have 0-1 h interval time, popular events occur within half an hour before flare starting time. Post-flares-CME associated events are wider than CME-Preflare associated events. CME…
Velocity shear Kelvin-Helmholtz instability with inhomogeneous DC electric field in the magnetosphere of Saturn
Kandpal, Praveen; Kaur, Rajbir; Pandey, R. S.
In this paper parallel flow velocity shear Kelvin-Helmholtz instability has been studied in two different extended regions of the inner magnetosphere of Saturn. The method of the characteristic solution and kinetic approach has been used in the mathematical calculation of dispersion relation and growth rate of K-H waves. Effect of magnetic field (…
GIADA performance during Rosetta mission scientific operations at comet 67P
Fulle, M.; Rodriguez, J.; Colangeli, L. +16 more
The Grain Impact Analyser and Dust Accumulator (GIADA) instrument onboard Rosetta studied the dust environment of comet 67P/Churyumov-Gerasimenko from 3.7 au inbound, through perihelion, to 3.8 au outbound, measuring the dust flow and the dynamic properties of individual particles. GIADA is composed of three subsystems: (1) Grain Detection System …
CME productivity associated with Solar Flare peak X-ray emission flux
Suryanarayana, G. S.; Balakrishna, K. M.
It is often noticed that the occurrence rate of Coronal Mass Ejections (CMEs) increases with increase in flare duration where peak flux too increase. However, there is no complete association between the duration and peak flux. Distinct characteristics have been reported for active regions (ARs) where flares and CMEs occur in contrast to ARs where…
Electric potential structures of auroral acceleration region border from multi-spacecraft Cluster data
Sadeghi, S.; Emami, M. R.
This paper studies an auroral event using data from three spacecraft of the Cluster mission, one inside and two at the poleward edge of the bottom of the Auroral Acceleration Region (AAR). The study reveals the three-dimensional profile of the region's poleward boundary, showing spatial segmentation of the electric potential structures and their d…