Search Publications
New temperature and pressure retrieval algorithm for high-resolution infrared solar occultation spectroscopy: analysis and validation against ACE-FTS and COSMIC
Olsen, K. S.; Toon, G. C.; Boone, C. D. +1 more
Motivated by the initial selection of a high-resolution solar occultation Fourier transform spectrometer (FTS) to fly to Mars on the ExoMars Trace Gas Orbiter, we have been developing algorithms for retrieving volume mixing ratio vertical profiles of trace gases, the primary component of which is a new algorithm and software for retrieving vertica…
Comparison of measured and calculated magnetic fields along the Ulysses orbit
Bazilevskaya, G. A.; Svirzhevsky, N. S.; Svirzhevskaya, A. K. +1 more
The existence of close relations between the temperature, density and velocity of the solar plasma and the heliospheric magnetic field (HMF) was shown along the space probe Ulysses orbit. A simple mathematical formula describing a relation between the HMF and the solar plasma temperature and density was introduced and the expected values of the HM…
Study of the star catalogue (epoch AD 1396.0) recorded in ancient Korean astronomical almanac
Jeon, Junhyeok; Lee, Yong Bok; Lee, Yong-Sam
The study of old star catalogues provides important astrometric data. Most of the researches based on the old star catalogues were manuscript published in Europe and from Arabic/Islam. However, the old star catalogues published in East Asia did not get attention. Therefore, among the East Asian star catalogues we focus on a particular catalogue re…
Properties of craters on the Achaia region of Asteroid (21) Lutetia
Jorda, L.; Lamy, P. L.; Groussin, O. +3 more
We report on the physical properties of the craters of Achaia region of the main-belt Asteroid (21) Lutetia, based on images obtained with the OSIRIS instrument during the Rosetta flyby that took place on 10 July 2010. Images of the surface were acquired with its Narrow Angle Camera, from which Digital Terrain Models (DTM) of the surface were cons…
Herschel-HIFI observations of H2O, NH3, and N2H+ toward high-mass starless and protostellar clumps identified by the Hi-GAL survey⋆
Codella, C.; Persson, C. M.; Olmi, L.
Context. Our present understanding of high-mass star formation still remains very schematic. In particular, it is not yet clear how much of the difference between low-mass and high-mass star formation occurs during the earliest star formation phases.
Aims: The chemical characteristics of massive cold clumps, and the comparison with those of t…
On the resolution of the phase space density required to obtain a specified accuracy of the solar wind bulk velocity
Podesta, John J.
Plasma measurements with significantly improved accuracy and time resolution are needed to advance knowledge and understanding of plasma physical process in the magnetosphere and the solar wind. In this study, it is shown how small unresolved features in particle distribution functions can have significant impacts on the measurement of plasma bulk…
An XMM-Newton view of FeKα in High Mass X-rays Binaries
Eikmann, W.; Oskinova, L. M.; Torrejón, J. M. +4 more
We present a comprehensive analysis of the whole sample of available XMM-Newton observations of High Mass X-ray Binaries (HMXBs) until August, 2013, focusing on the FeKα emission line. This line is a key tool to better understand the physical properties of the material surrounding the X-ray source within a few stellar radii (the circumstellar medi…
Probing the Accretion Processes in Soft X-Ray Selected Polars
Schwope, A. D.; Traulsen, I.; Reinsch, K.
High-energy data of accreting white dwarfs give access to the regime of the primary accretion-induced energy release and the different proposed accretion scenarios. We perform XMM-Newton observations of polars selected due to their ROSAT hardness ratios close to -1.0 and model the emission processes in accretion column and accretion region. Our mo…
Evolutionary Status and Internal Structure of µ Cassiopeiae
Bach, Kiehunn
Dust emission and scattering in dense interstellar clouds
Juvela, M.
Dust has a crucial role in the physics of interstellar medium (ISM) and it is one of the main tracers used in studies of dense clouds. Its importance has been accentuated by the large amounts of data available from the recent fleet of infrared and submillimetre satellites. These observations are providing further insights into the properties of in…