Search Publications
Cepheid investigations using the Kepler space telescope
Smolec, R.; Szabados, L.; Handler, G. +35 more
We report results of initial work done on selected candidate Cepheids to be observed with the Kepler space telescope. Prior to the launch, 40 candidates were selected from previous surveys and data bases. The analysis of the first 322 d of Kepler photometry, and recent ground-based follow-up multicolour photometry and spectroscopy allowed us to co…
Global Distribution of Fe Kα Lines in the Galactic Center Region Observed with the Suzaku Satellite
Koyama, Katsuji; Matsumoto, Hironori; Nobukawa, Masayoshi +2 more
We surveyed spatial profiles of the Fe K
Favorable conditions for energetic electron acceleration during magnetic reconnection in the Earth's magnetotail
Hoshino, M.; Imada, S.; Mukai, T. +1 more
We have studied favorable conditions for energetic electron acceleration during magnetic reconnection in the Earth's magnetosphere using the Geotail data. We have found the strong energetic electron acceleration in some reconnection events. On the other hand, the other reconnection events show weak electron acceleration. To discuss what reconnecti…
Cluster observations of surface waves in the ion jets from magnetotail reconnection
Balogh, A.; Rème, H.; Cattell, C. +5 more
We present a Cluster spacecraft investigation of plasma sheet-confined waves and the associated Poynting flux in strong ion jets near a reconnection region in the geomagnetic tail at ∼-17 Re. Using phase lag analysis, we determine from multispacecraft measurements the phase front, wavelength, and phase velocity of the waves with spacecraft frame f…
X-Ray Spectral Curvature of High-frequency-peaked BL Lac Objects: A Predictor for the TeV Flux
Elvis, M.; Massaro, F.; Paggi, A. +1 more
Most of the extragalactic sources detected at TeV energies are BL Lac objects. They belong to the subclass of high-frequency-peaked BL Lac objects (HBLs) exhibiting spectral energy distributions with a lower energy peak in the X-ray band; this is widely interpreted as synchrotron emission from relativistic electrons. The X-ray spectra are generall…
Evolution of the Dust/Gas Environment around Herbig Ae/Be Stars
Liu, Tie; Qin, Sheng-Li; Wu, Yuefang +2 more
Using the KOSMA 3 m telescope, 54 Herbig Ae/Be (HAe/Be) stars were surveyed in CO and 13CO emission lines. The properties of the stars and their circumstellar environments were studied by fitting spectral energy distributions (SEDs). The mean line width of 13CO (2-1) lines of this sample is 1.87 km s-1. The average…
The zCOSMOS-Bright survey: the clustering of early and late galaxy morphological types since z≃ 1
Kneib, J. -P.; Maccagni, D.; Cimatti, A. +53 more
We measure the spatial clustering of galaxies as a function of their morphological type at z≃ 0.8, for the first time in a deep redshift survey with full morphological information. This is obtained by combining high-resolution Hubble Space Telescope imaging and Very Large Telescope spectroscopy for about 8500 galaxies to ? with accurate spectrosco…
Three-dimensional Reconstruction of an Erupting Filament with Solar Dynamics Observatory and STEREO Observations
Li, Ting; Yang, Shuhong; Zhang, Jun +1 more
On 2010 August 1, a global solar event was launched involving almost the entire Earth-facing side of the Sun. This event mainly consisted of a C3.2 flare, a polar crown filament eruption, and two Earth-directed coronal mass ejections. The observations from the Solar Dynamics Observatory (SDO) and STEREO showed that all the activities were coupled …
XMM-Newton observations of the superbubble in N 158 in the LMC
Haberl, F.; Sasaki, M.; Breitschwerdt, D. +1 more
Aims: We study the diffuse X-ray emission observed in the field of view of the pulsar B 0540-69 in the Large Magellanic Cloud (LMC) by XMM-Newton. We wish to understand the nature of this soft diffuse emission, which coincides with the superbubble in the H ii region N 158, and improve our understanding of the evolution of superbubbles.
M…
A pan-chromatic view of the galaxy cluster XMMU J1230.3+1339 at z = 0.975. Observing the assembly of a massive system
Böhringer, H.; Pratt, G. W.; Rovilos, E. +16 more
Context. Observations of the formation and evolution of massive galaxy clusters and their matter components provide crucial constraints on cosmic structure formation, the thermal history of the intracluster medium (ICM), galaxy evolution, transformation processes, and gravitational and hydrodynamic interaction physics of the subcomponents.
Ai…