Search Publications
Probing the nature of short swift bursts via deep INTEGRAL monitoring of GRB 050925
Sakamoto, T.; Gehrels, N.; Cummings, J. R. +10 more
We present results from Swift, XMM-Newton, and deep INTEGRAL monitoring in the region of GRB 050925. This short Swift burst is a candidate for a newly discovered soft gamma-ray repeater (SGR) with the following observational burst properties: (1) galactic plane (b = -0.1°) localization, (2) 150 ms duration, and (3) a blackbody rather than a simple…
Representation of solar features in 3D for creating visual solar catalogues
Colak, Tufan; Qahwaji, Rami; Ipson, Stan +1 more
In this study a method for 3D representation of active regions and sunspots that are detected from Solar and Heliospheric Observatory/Michelson Doppler Imager magnetogram and continuum images is provided. This is our first attempt to create a visual solar catalogue. Because of the difficulty of providing a full description of data in text based ca…
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…
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…
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…
Structure and kinetic properties of slow-mode shocks associated with magnetic reconnection in the near-Earth magnetotail
Yuan, Zhigang; Zhou, Meng; Lin, Xi +3 more
We study the structure and kinetic properties of slow-mode shocks near the plasma sheet boundary layer (PSBL) associated with magnetic reconnection by Cluster observation. The presence of slow-mode shocks is confirmed by traditional Rankine-Hugoniot (RH) analysis and Monte-Carlo shock fitting method. The Walén analysis, applied to the tailward flo…
Generic procedure for designing and implementing plan management systems for space science missions operations
Chaizy, P. A.; Dimbylow, T. G.; Hapgood, M. A. +1 more
This paper is one of the components of a larger framework of activities whose purpose is to improve the performance and productivity of space mission systems, i.e. to increase both what can be achieved and the cost effectiveness of this achievement. Some of these activities introduced the concept of Functional Architecture Module (FAM); FAMs are b…
Science operations planning expertise: A neglected component of mission design
Chaizy, P. A.; Dimbylow, T. G.; Hapgood, M. A. +1 more
In this paper, Science Operations Planning Expertise (SOPE) is defined as the expertise that is held by people who have the two following qualities. First they have both theoretical and practical experience in operations planning, in general, and in space science operations planning in particular. Second, they can be used, on request and at least,…
Multi-point observations of earthward fast flow in the plasma sheet by virtual satellites located in the MHD simulation domain
Kondoh, Koji; Shimizu, Tohru; Ugai, Masayuki
Time profiles of some physical values in earthward fast flows in the plasma sheet are observed at three dimensionally different positions by employing virtual satellites located in the three-dimensional magnetohydrodynamic simulation domain, and these simulations are done on the basis of the spontaneous fast reconnection model. In the spontaneous …
The INTEGRAL view of Gamma-Ray Bursts
McGlynn, S.; Foley, S.; Bazzano, A. +3 more
After more than six and half years in orbit, the ESA space observatory INTEGRAL has provided new, exciting results in the soft gamma-ray energy range (from a few keV to a few MeV). With the discovery of about 700 hard X-Ray sources, it has changed our previous view of a sky composed of peculiar and “monster” sources. The new high energy sky is in …