Search Publications
A benchmark of the He-like triplet for ions with 6 ≤ Z ≤ 14 in Maxwellian and non-Maxwellian plasmas
Gatuzz, E.; Bautista, M. A.; Mendoza, C. +1 more
After an extensive assessment of the effective collision strengths available to model the He-like triplet of C V, N VI, O VII, Ne IX, Mg XI and Si XIII in collisionally dominated plasmas, new accurate effective collision strengths are reported for Ne IX. The uncertainty intervals of the density and temperature diagnostics due to the atomic data er…
Investigation of cosmic ray penetration with wavelet cross-correlation analysis
Yang, Rui-zhi
Aims: We use Fermi-LATand Planck data to calculate the cross correlation between γ-ray signal and gas distribution in different scales in giant molecular clouds (GMCs). Then we investigate the cosmic rays (CRs) penetration in GMCs with these informations.
Methods: We use the wavelet technique to decompose both the γ-ray and dust opacity …
Galactic dynamics in the times of Gaia
Aguilar, L. A.
We present a brief description of the Gaia astrometric mission and its current status. We discuss the importance of creating realistic ``mock catalogues'' to compare models and data in the space of Gaia observables, rather than mapping observables into spaces of theoretical parameters. We talk about some important lessons we have learnt in the pro…
XMM-Newton and Suzaku spectroscopic studies of unidentified X-ray sources towards the Galactic bulge: 1RXS J180556.1-343818 and 1RXS J173905.2-392615
Maeda, Yoshitomo; Mori, Hideyuki; Ueda, Yoshihiro
With XMM-Newton and Suzaku observations, for the first time, we acquired broad-band spectra of two unidentified X-ray sources towards the Galactic bulge: 1RXS J180556.1-343818 and 1RXS J173905.2-392615. The 1RXS J180556.1-343818 spectrum in the 0.3-7 keV band was explained by X-ray emission that originated from an optically-thin thermal plasma wit…
An outflow linked to a YSO in Gum 31?
Bosch, G.; Cappa, C. E.; Vazzano, M. M. +1 more
We analyze the distribution of the molecular gas associated with 10349-5824, a young stellar object located on the edge of the H ii region Gum31, with the aim of investigating the existence of bipolar outflows. We use CO(2-1) line observations obtained with the APEX telescope, H line observations on the K band taken with Flamingos 2 in Gemini Sout…
a Solution to Low Rfm Fitting Precision of Planetary Orbiter Images Caused by Exposure Time Changing
Liu, B.; Di, K.; Xu, B. +1 more
In this paper, we propose a new solution to the low RFM fitting precision caused by exposure time changing using sensor correction. First, we establish a new rigorous geometric model, with the same ephemerides, attitudes and sensor design parameters of Chang'E-2 and HRSC images, using an equal exposure time of each scan line. The original rigorous…
Die Kometenmission Rosetta
Krüger, Harald
Die Rosetta-Mission ist ein Meilenstein in der Erforschung der Kometen und ihrer Entstehung. Eine der größten üerraschungen war die unregelmäßge hantelförmige Gestalt des Zielkometen 67P/Tschurjumow-Gerassimenko. Er besteht wahrscheinlich aus zwei Einzelkörpern, die durch ihre Schwerkraft aneinander gehalten werden. Seine Oberfläche ist sehr rau u…
Cassini detects interstellar dust grains
Smith, Keith T.
The Strategy and Implementation of the Rosetta Communication Campaign
Bauer, M.; McCaughrean, M.; Landeau-Constantin, J.
The communication campaign for Rosetta has been the biggest success in the history of European Space Agency outreach, resulting in global awareness for the agency. The mission itself is an extraordinary operational and scientific success, but communicating only the operational and scientific firsts would likely not have brought the Rosetta orbiter…
Analyzing the interstellar neutral He bulk flow parameters with IBEX-Lo
Leonard, Trevor W.
Our Sun is immersed in a local galactic environment which is composed of a warm, dilute, and partially ionized gas. Due to the Sun's motion relative to this environment, the interstellar neutral (ISN) gas flows through the heliosphere providing the opportunity to perform in-situ observations of the ISN gas from Earth's orbit. The Interstellar Boun…