Search Publications
Energetic particle measurements in the vicinity of Dione during the three Cassini encounters 2005-2011
Krupp, N.; Roussos, E.; Khurana, K. K. +7 more
The Cassini spacecraft encountered the moon Dione three times between 2005 and 2011. During the flybys particles and fields measurements have been performed and used to study the magnetospheric interaction between the fourth largest moon in the saturnian system and the surrounding magnetospheric plasma. Here we present the results of the Low Energ…
Population of SOHO/STEREO Kreutz Sungrazers and the Arrival of Comet C/2011 W3 (Lovejoy)
Sekanina, Zdenek; Kracht, Rainer
We examine properties of the population of SOHO/STEREO (dwarf) Kreutz sungrazing comets from 2004 to 2013, including the arrival rates, peculiar gaps, and a potential relationship to the spectacular comet C/2011 W3 (Lovejoy). Selection effects, influencing the observed distribution, are largely absent among bright dwarf sungrazers, whose temporal …
A view of supernova remnant CTB 37A with the Fermi Gamma-ray Space Telescope
Fermi-LAT Collaboration; Brandt, T. J.
Supernovae and their remnants have long been favored as cosmic ray accelerators. Recent data from the Fermi Gamma-ray Space Telescope has given us an improved window into such sources, including the remnant CTB 37A. Using the Fermi Large Area Telescope, we found significant gamma-ray emission coincident with the remnant, which also emits in radio,…
New companions in the stellar systems of DI Cha, Sz 22, CHXR 32, and Cha Hα 5 in the Chamaeleon I star-forming region
Neuhäuser, R.; Schmidt, T. O. B.; Vogt, N. +2 more
Context. The star-forming regions in Chamaeleon (Cha) are among the nearest (distance ~165 pc) and youngest (age ~2 Myr) conglomerates of recently formed stars and among the ideal targets for studies of star formation.
Aims: We search for new, hitherto unknown binary or multiple-star components and investigate their membership in Cha and thei…
Turbulence in the SuperModel: Mass Reconstruction with Nonthermal Pressure for A1835
Lapi, A.; Fusco-Femiano, R.
The total mass derived from X-ray emission is biased low in a large number of clusters when compared with the mass estimated via strong and weak lensing. Suzaku and Chandra observations out to the virial radius report in several relaxed clusters' steep temperature gradients that on assuming pure thermal hydrostatic equilibrium (HE) imply an unphys…
Cross-field flow and electric potential in a plasma slab
Roth, M.; De Keyser, J.; Echim, M.
We consider cross-field plasma flow inside a field-aligned plasma slab embedded in a uniform background in a 1-dimensional geometry. This situation may arise, for instance, when long-lasting reconnection pulses inject plasma into the inner magnetosphere. The present paper presents a detailed analysis of the structure of the interfaces that separat…
An updated rotation model for Comet 9P/Tempel 1
Li, J. -Y.; Harris, A. W.; Veverka, J. +8 more
Observations from the second encounter of Comet 9P/Tempel 1 by the Stardust-NExT spacecraft provide an improved shape model and rotational pole for the nucleus (Thomas, P.C. et al. [2012]. Icarus 222, 453-466) that allows us to greatly improve our knowledge of its rotational evolution beyond that outlined earlier in Belton et al. (Belton, M.J.S. e…
AKARI Infrared Camera Survey of the Large Magellanic Cloud. II. The Near-infrared Spectroscopic Catalog
Onaka, Takashi; Ita, Yoshifusa; Sakon, Itsuki +4 more
We performed a near-infrared spectroscopic survey toward an area of ~10 deg2 of the Large Magellanic Cloud (LMC) with the infrared satellite AKARI. Observations were carried out as part of the AKARI Large-area Survey of the Large Magellanic Cloud (LSLMC). The slitless multi-object spectroscopic capability of the AKARI/IRC enabled us to …
X-ray spectral analysis of the low-luminosity active galactic nucleus NGC 7213 using long XMM-Newton observations
Papadakis, I. E.; Emmanoulopoulos, D.; Nicastro, F. +1 more
We present the X-ray spectral results from the longest X-ray Multi-mirror Mission-Newton observation, 133 ks, of the low-luminosity active galactic nucleus NGC 7213. The hardness-ratio analysis of the X-ray light curves discloses a rather constant X-ray spectral shape, at least for the observed exposure time, enabling us to perform X-ray spectral …
Probing the inner boundaries of Saturn's A ring with the Iapetus -1:0 nodal bending wave
Porco, Carolyn C.; Hedman, Matthew M.; Burns, Joseph A. +2 more
The Iapetus -1:0 nodal bending wave, the first spiral wave ever described in Saturn's rings, has been seen again for the first time in 29 years. We demonstrate that it is in fact the nodal bending wave, not the 1:0 apsidal density wave as previously reported. We use wavelet analysis to determine the wavelength profile, thus deriving the surface de…