Search Publications

Evolution of periglacial landforms in the ancient mountain range of the Thaumasia Highlands, Mars

Neukum, G.; Hauber, E.; Rossi, A. P. +5 more

On the Anti-correlation between Spectral Line Broadening and Intensity in Coronal Structures Observed with EIS

Martens, P. C. H.; Scott, J. T.

The advance in spectral resolution of the Extreme Ultraviolet Imaging (EIS) spectrometer on board Hinode has allowed for more detailed analysis of coronal spectral lines. Large line broadening and blueshifted velocities have been found in the periphery of active region (AR) cores and near the footpoints of coronal loops. This line broadening is ye…

Interplanetary magnetic field rotations followed from L1 to the ground: the response of the Earth's magnetosphere as seen by multi-spacecraft and ground-based observations

Berchem, J.; Eastwood, J. P.; Lavraud, B. +17 more

A study of the interaction of solar wind magnetic field rotations with the Earth's magnetosphere is performed. For this event there is, for the first time, a full coverage over the dayside magnetosphere with multiple (multi)spacecraft missions from dawn to dusk, combined with ground magnetometers, radar and an auroral camera, this gives a unique c…

The mid-infrared extinction in molecular clouds. Case study of B 335

Olofsson, G.; Olofsson, S.

Aims: The purpose of the present investigation is to probe the dust properties inside a molecular cloud, in particular how particle growth and the presence of ice coatings may change the overall shape of the extinction curve.
Methods: Field stars behind a molecular cloud can be used to probe the cloud extinction for both the reddening an…

MHD-instability of the magnetotail: Global modes

Leonovich, A. S.

A hydromagnetic stability problem is solved for the magnetospheric tail inside the solar wind plasma flow. A model magnetotail is used in the form of a plasma cylinder which is inhomogeneous over the radius. For a qualitative analysis of the problem the solution is obtained analytically, in the WKB approximation. The plasma cylinder boundary is as…

Vector Magnetic Fields and Current Helicities in Coronal Holes and Quiet Regions

Li, Ting; Yang, Shuhong; Zhang, Jun +1 more

In the solar photosphere, many properties of coronal holes (CHs) are not known, especially vector magnetic fields. Using observations from Hinode, we investigate vector magnetic fields, current densities, and current helicities in two CHs, and compare them with two normal quiet regions (QRs) for the first time. We find that the areas where large c…

Dynamically Excited Outer Solar System Objects in the Hubble Space Telescope Archive

Fuentes, Cesar I.; Holman, Matthew J.; Trilling, David E.

We present the faintest mid-ecliptic latitude survey in the second part of Hubble Space Telescope archival search for outer solar system bodies. We report the discovery of 28 new trans-Neptunian objects and one small centaur (R ~ 2 km) in the band 5°-20° off the ecliptic. The inclination distribution of these excited objects is consistent with the…

Dynamical study of the wide visual binary ADS 12815 (16 Cyg)

Kiselev, A. A.; Romanenko, L. G.

A homogeneous series of photographic position measurments of the visual binary ADS 12815 obtained on the 26-inch refractor of the Pulkovo Observatory (1960-2007) is analyzed. The Pulkovo observations allow for the existence of the planet around component B discovered by Cochran et al. based on radial-velocity measurements. The orbit of the planet …

Highly absorbed X-ray binaries in the Small Magellanic Cloud

Pietsch, W.; Haberl, F.; Tiengo, A. +12 more

Many of the high mass X-ray binaries (HMXRBs) discovered in recent years in our Galaxy are characterized by a high absorption, most likely intrinsic to the system, that can impede their detection at the softest X-ray energies. Exploiting the good coverage obtained with sensitive XMM-Newton observations, we have undertaken a search for highly absor…

The rotation of Mimas

Noyelles, B.; Rambaux, N.; Karatekin, Ö.

Context. The Cassini mission in the Saturnian system is an outstanding opportunity to improve our knowledge of the satellites of Saturn. The data obtained thanks to this mission must be balanced with theoretical models.
Aims: This paper aims at modelling the rotation of Mimas with respect to its possible internal structure.
Methods: We f…