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Suzaku Observation of the RCW86 Northeastern Shell
Yamaguchi, Hiroya; Koyama, Katsuji; Nakajima, Hiroshi +4 more
This paper reports on Suzaku results concerning the northeast shell of RCW86. With both spatial and spectral analyses, we separated the X-rays into three distinct components: low (kTe ∼ 0.3keV) and high (kTe ∼ 1.8keV) temperature plasmas and a non-thermal component, and discovered that their spatial distributions are differen…
Causal relationships between eruptive prominences and coronal mass ejections
Filippov, B.; Koutchmy, S.
A close association between eruptive prominences and CMEs, both slow and fast CMEs, was reported in many studies. Sometimes it was possible to follow the material motion starting from the prominence (filament) activation to the CME in the high corona. Remnants of the prominence were found in the bright core of the CME. However, detailed comparison…
High resolution radio study of the pulsar wind nebula within the supernova remnant G0.9+0.1
Decourchelle, A.; Giacani, E.; Dubner, G.
Aims: We have conducted a study in radio wavelengths and in X-rays of the pulsar wind nebula (PWN) in the supernova remnant (SNR) G0.9+0.1 with the goal of investigating in detail its morphology and to accurately determine its characteristic parameters.
Methods: To carry out this research we have observed the PWN at λ3.6 and 6 cm using the Aus…
High resolution spectroscopy of the inner ring of SN 1987A
Sollerman, J.; Lundqvist, P.; Spyromilio, J. +8 more
We discuss high resolution VLT/UVES observations (FWHM ~ 6 km s-1) from October 2002 (day ~5700 past explosion) of the shock interaction of SN 1987A and its circumstellar ring. A large number of narrow emission lines from the unshocked ring, with ion stages from neutral up to Ne V and Fe VII, have been identified. A nebular analysis of …
Modulated reconnection rate and energy conversion at the magnetopause under steady IMF conditions
Dandouras, I.; Buchert, S.; Vaivads, A. +4 more
We use the multi-spacecraft mission Cluster to make observational estimates of the local energy conversion across the dayside high-latitude magnetopause. The energy conversion is estimated during eleven complete magnetopause crossings under steady south-dawnward interplanetary magnetic field (IMF). We describe a new method to determine the reconne…
Near-infra-red spectroscopic ages of massive star clusters in M 82
Smith, L. J.; Gallagher, J. S., III; Mouhcine, M. +3 more
Context: Like other starburst galaxies, M 82 hosts compact, massive (>5 × 105 M⊙) young star clusters that are interesting both in their own right and as benchmarks for population synthesis models.
Aims: In addition to assessing or reassessing the properties of some of the brightest near-IR sources in M 82, this paper …
Evidence That Solar Flares Drive Global Oscillations in the Sun
Kjeldsen, H.; Karoff, C.
Solar flares are large explosions on the Sun's surface caused by a sudden release of magnetic energy. They are known to cause local short-lived oscillations traveling away from the explosion like water rings. Here we show that the energy in the solar acoustic spectrum is correlated with flares. This means that the flares drive global oscillations …
Signature of mass supply to quiet coronal loops
Tu, C. -Y.; Marsch, E.; Tian, H. +2 more
Aims:The physical implication of large blue shift of Ne viii in the quiet Sun region is investigated in this paper.
Methods: We compare the significant Ne viii blue shifts, which are visible as large blue patches on the Doppler-shift map of a middle-latitude quiet-Sun region observed by SUMER, with the coronal magnetic-field structures as reco…
Parametric analysis of positive amplitude electron acoustic solitary waves in a magnetized plasma and its application to boundary layers
Winningham, J. D.; Lakhina, G. S.; Pickett, J. S. +3 more
The existence domain of a fully nonlinear positive amplitude electron acoustic solitary wave has been studied in a four-component plasma composed of warm magnetized electrons, warm electron beam, and energetic multi-ion species with ions hotter than the electrons (Ti > Te). A Sagdeev pseudopotential technique has been used…
Lunar degree 2 potential Love number determination from satellite tracking data
Matsumoto, K.; Goossens, S.
The lunar potential Love number k 2 has been determined using available satellite tracking data coming from the Lunar Orbiters I-V, the Apollo 15 and 16 subsatellites, Clementine and Lunar Prospector. Some SMART-1 spacecraft tracking data are also included. A previous determination using spacecraft data reported k 2 = 0.026 +…