Search Publications
CME-flare association during the 23rd solar cycle
Beheary, M. M.; Youssef, M.; Mawad, R. +2 more
The relation between coronal mass ejections (CMEs) and solar flares are statistically studied. More than 10,000 CME events observed by SOHO/LASCO during the period 1996-2005 have been analyzed. The soft X-ray flux measurements provided by the Geostationary Operational Environmental Satellite (GOES), recorded more than 20,000 flares in the same tim…
Magnetosphere response to the 2005 and 2006 extreme solar events as observed by the Cluster and Double Star spacecraft
Cao, Jinbin; Escoubet, Philippe; Rème, Henri +1 more
The four identical Cluster spacecraft, launched in 2000, orbit the Earth in a tetrahedral configuration and on a highly eccentric polar orbit (4-19.6 RE). This allows the crossing of critical layers that develop as a result of the interaction between the solar wind and the Earth’s magnetosphere. Since 2004 the Chinese Double Star TC-1 a…
Comparative study of productivity of the Rosetta target Comet 67P/Churyumov-Gerasimenko
de Almeida, A. A.; Trevisan Sanzovo, D.; Sanzovo, G. C. +2 more
In an attempt to evaluate correlations between several properties of comets we report the results of a cometary research involving a criterious analysis of gas and dust mass production rates in Comets 67P/Churyumov-Gerasimenko (main target of Rosetta Mission), 1P/Halley, Hyakutake (C/1996 B2), and 46P/Wirtanen and make a comparison between them.
Wave emissions at half electron gyroharmonics in the equatorial plasmasphere region: CLUSTER observations and statistics
Canu, P.; Darrouzet, F.; Suraud, X. +5 more
Energetic neutral atom (ENA) and charged particle periodicities in Saturn’s magnetosphere
Paranicas, C.; Krimigis, Stamatios M.; Mitchell, Donald G. +2 more
The Magnetospheric Imaging Instrument (MIMI) on the Cassini spacecraft has observed energetic neutral atoms (ENA) and charged particles at Saturn from mid-2004 to the present. The particles often but not always reveal striking periodic behavior that seems to depend on the type of particle and spacecraft location. When subjected to a Lomb periodogr…
Simultaneous observations of the plasma density on the same field line by the CPMN ground magnetometers and the Cluster satellites
Ohtani, S.; Kawano, H.; Maeda, N. +6 more
Study of the 28 October 2003 and 20 January 2005 solar flares by means of 2.223 MeV gamma-emission line
Troitskaia, Evgenia V.; Arkhangelskaja, Irene V.; Miroshnichenko, Leonty I. +1 more
By the data on intensity-time profiles of the neutron capture line of 2.223 MeV we have studied some characteristics of two solar flares, 28 October 2003 and 20 January 2005 (INTEGRAL and CORONAS-F observations, respectively). The SINP code was applied making allowance for the main processes of neutron interactions and deceleration in the solar pl…
Cluster observations of earthward propagating plasmoid and flux ropes in the near-tail during the course of a substorm event
Tang, C. L.; Lu, L.; Li, Z. Y.
We analyze the magnetic structures in the near-tail at XGSM = -17.5 RE on September 19, 2003 by Cluster. During the course of a substorm event, the earthward propagating plasmoid and flux ropes in the near-tail are observed. The earthward propagating plasmoid is associated with the bipolar Bz and By signatures. The two flux ropes are embedded with…
Is Vela Jr. a young supernova remnant?
Katsuda, Satoru; Mori, Koji; Tsunemi, Hiroshi
The supernova remnant RX J0852.0-4622 (or Vela Jr.) has been considered to be very young (∼680 yr) based mainly on the possible detection of a radioactive decay line of 44Ti whose lifetime is only ∼90 yr. Here, we report on expansion measurements of the northwestern rim of this remnant, based on XMM-Newton observations separated by 6.5 …
Solar and interplanetary origins of the November 2004 superstorms
Tsurutani, Bruce T.; Echer, Ezequiel; Guarnieri, Fernando L.
During the first half of November 2004, many solar flares and coronal mass ejections (CMEs) were associated with solar active region (AR) 10696. This paper attempts to identify the solar and interplanetary origins of two superstorms which occurred on 8 and 10 November with peak intensities of Dst = -373 nT and -289 nT, respectively. Southward inte…