Search Publications
Saturn's zonal wind profile in 2004-2009 from Cassini ISS images and its long-term variability
Hueso, R.; Sánchez-Lavega, A.; García-Melendo, E. +1 more
Five years of Cassini Imaging Science Subsystem images, from 2004 to 2009, are analyzed in this work to retrieve global zonal wind profiles of Saturn's northern and southern hemispheres in the methane absorbing bands at 890 and 727 nm and in their respective adjacent continuum wavelengths of 939 and 752 nm. A complete view of Saturn's global circu…
A single picture for solar coronal outflows and radio noise storms
Aulanier, G.; Klein, K. -L.; Del Zanna, G. +1 more
We propose a unified interpretation for persistent coronal outflows and metric radio noise storms, two phenomena typically observed in association with quiescent solar active regions. Our interpretation is based on multi-wavelength observations of two such regions as they crossed the meridian in May and July 2007. For both regions, we observe a pe…
A giant thunderstorm on Saturn
Gurnett, D. A.; Kurth, W. S.; Delcroix, M. +8 more
Lightning discharges in Saturn's atmosphere emit radio waves with intensities about 10,000 times stronger than those of their terrestrial counterparts. These radio waves are the characteristic features of lightning from thunderstorms on Saturn, which last for days to months. Convective storms about 2,000 kilometres in size have been observed in re…
Probing Very Bright End of Galaxy Luminosity Function at z >~ 7 Using Hubble Space Telescope Pure Parallel Observations
Koekemoer, Anton M.; Fan, Xiaohui; McCarthy, Patrick J. +8 more
We report the first results from the Hubble Infrared Pure Parallel Imaging Extragalactic Survey, which utilizes the pure parallel orbits of the Hubble Space Telescope to do deep imaging along a large number of random sightlines. To date, our analysis includes 26 widely separated fields observed by the Wide Field Camera 3, which amounts to 122.8 ar…
Plasma Motions and Heating by Magnetic Reconnection in a 2007 May 19 Flare
Harra, Louise K.; Hara, Hirohisa; Young, Peter R. +2 more
Based on scanning spectroscopic observations with the Hinode EUV imaging spectrometer, we have found a loop-top hot source, a fast jet nearby, and an inflow structure flowing to the hot source that appeared in the impulsive phase of a long-duration flare at the disk center on 2007 May 19. The hot source observed in Fe XXIII and Fe XXIV emission li…
The Discovery and Nature of the Optical Transient CSS100217:102913+404220
Drake, A. J.; Djorgovski, S. G.; Anderson, J. +32 more
We report on the discovery and observations of the extremely luminous optical transient CSS100217:102913+404220 (CSS100217 hereafter). Spectroscopic observations showed that this transient was coincident with a galaxy at redshift z = 0.147 and reached an apparent magnitude of V ~ 16.3. After correcting for foreground Galactic extinction we determi…
X-Ray Study of the Outer Region of Abell 2142 with Suzaku
Hoshino, Akio; Sato, Kosuke; Ohashi, Takaya +4 more
We observed outer regions of a bright cluster of galaxies, A 2142, with Suzaku. Temperature and brightness structures were measured out to the virial radius (
A new SNR with TeV shell-type morphology: HESS J1731-347
Klochkov, D.; Santangelo, A.; Quirrenbach, A. +194 more
Aims: The recent discovery of the radio shell-type supernova remnant (SNR),
Stratigraphy, mineralogy, and origin of layered deposits inside Terby crater, Mars
Mangold, N.; Le Mouélic, S.; Bibring, J. -P. +13 more
The 174 km diameter Terby impact crater (28.0°S-74.1°E) located on the northern rim of the Hellas basin displays anomalous inner morphology, including a flat floor and light-toned layered deposits. An analysis of these deposits was performed using multiple datasets from Mars Global Surveyor, Mars Odyssey, Mars Express and Mars Reconnaissance Orbit…
Solar neutrinos, helioseismology and the solar internal dynamics
Turck-Chièze, Sylvaine; Couvidat, Sébastien
Neutrinos are fundamental particles ubiquitous in the Universe and whose properties remain elusive despite more than 50 years of intense research activity. This review illustrates the importance of solar neutrinos in astrophysics, nuclear physics and particle physics. After a description of the historical context, we remind the reader of the notic…