Search Publications

ERRATUM: `The variable spin-down rate of the transient magnetar XTE J1810-197'

Pintore, Fabio; Mereghetti, Sandro; Esposito, Paolo +7 more

KOSMA ¹²CO(2–1) and (3–2) observations toward Infrared Dark Clouds

Li, Dalei; Tang, Xindi; Zhou, Jianjun +7 more

Infrared Dark Clouds (IRDCs) are a valuable sample to study the initial conditions and the very early stages of the evolution of massive stars. Using the KOSMA telescope, we performed simultaneous single point ¹²CO(2–1) and (3–2) observations toward 117 IRDCs with a detection rate of 74 % for ¹²CO(2–1) and 58 % for ¹²

Statistically Determined Dispersion Relations of Magnetic Field Fluctuations in the Terrestrial Foreshock

Nakariakov, V. M.; Hnat, B.; O'Connell, D. +1 more

We obtain dispersion relations of magnetic field fluctuations for two crossings of the terrestrial foreshock by Cluster spacecraft. These crossings cover plasma conditions that differ significantly in their plasma β and in the density of the reflected ion beam, but not in the properties of the encountered ion population, both showing shell-like di…

UV and X-ray variability of the narrow-line Seyfert 1 galaxy Ark 564

Dewangan, Gulab C.; Kembhavi, Ajit K.; Misra, Ranjeev +3 more

We analyze eight XMM-Newton observations of the bright Narrow Line Seyfert 1 galaxy Arakelian 564 (Ark 564). These observations, separated by ∼ 6 days, allow us to look for correlations between the simultaneous ultraviolet (UV) emission (from the Optical Monitor) with not only the X-ray flux but also with different X-ray spectral parameters. The X…

"Hello, World!" Harnessing Social Media for the Rosetta Mission

Bauer, M.; McCaughrean, M.; O'Flaherty, K. S. +8 more

The European Space Agency's comet-chasing Rosetta mission was launched in 2004, before social media became a popular tool for mainstream communication. As it reached its destination ten years later, new audiences were reached and inspired by this once-in-a-lifetime event by harnessing a range of outlets for communicating the key messages. These in…

A likely inverse-Compton emission from the Type IIb SN 2013df

Kong, A. K. H.; Li, K. L.

The inverse-Compton X-ray emission model for supernovae has been well established to explain the X-ray properties of many supernovae for over 30 years. However, no observational case has yet been found to connect the X-rays with the optical lights as they should be. Here, we report the discovery of a hard X-ray source that is associated with a Typ…

Corrigendum to "Comet 67P/Churyumov-Gerasimenko, location of pristine material?" [Planet. Space Sci. 125 (2016) 96-104]

kossacki, Konrad J.

In this paper was investigated evolution of the material structure in selected locations on the nucleus of comet 67P/Churyumov-Gerasimenko. The shape of the surface was described by the shape model SHAP4s v1.0. The considered locations i.e. sectors of the surface were marked in Fig. 1.

Secret neutrino interactions: a pseudoscalar model

Tram, Thomas; Archidiacono, Maria; Hannestad, Steen +1 more

Neutrino oscillation experiments point towards the existence of additional mostly sterile neutrino mass eigenstates in the eV mass range. At the same time, such sterile neutrinos are disfavoured by cosmology (Big Bang Nucleosynthesis, Cosmic Microwave Background and Large Scale Structure), unless they can be prevented from being thermalised in the…

Global Bundle Adjustment with Variable Orientation Point Distance for Precise Mars Express Orbit Reconstruction

Bostelmann, J.; Heipke, C.

The photogrammetric bundle adjustment of line scanner image data requires a precise description of the time-dependent image orientation. For this task exterior orientation parameters of discrete points are used to model position and viewing direction of a camera trajectory via polynomials. This paper investigates the influence of the distance betw…

Búsqueda y análisis de asociaciones estelares en NGC247

Baume, G.; Rodríguez, M. J.; Feinstein, C.

From ACS/HST observations, available in the Space Telescope database, the search and analysis of young stellar associations in the galaxy NGC247 have been carried out. The Path Linkage Criterion was used for the detection, identifying 147 young stellar groups. Thanks to the ACS high spatial resolution, it was possible to detect the individual comp…