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- Centre National de la Recherche ScientifiqueFR348 papers
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17 papers · 2 filters
Heating a Distant Galaxy Cluster by Giant X-ray Cavities and Large-Scale Shock Fronts
B. R. McNamara, P. E. J. Nulsen, M. W. Wise +4
We report the discovery of a pair of giant cavities, each nearly 200 kpc in diameter, embedded in the gaseous halo of the redshift z=0.216 galaxy cluster MS0735.6+7421. The cavitie…
A hadronic synchrotron mirror model for the "orphan" TeV flare in 1ES 1959+650
M. Boettcher
Very-high-energy gamma-ray flares of TeV blazars are generally accompanied by simultaneous flaring activity in X-rays. The recent observations by the Whipple collaboration of an ``…
Multifrequency Observations of the Gamma-Ray Blazar 3C 279 in Low-State during Integral AO-1
W. Collmar, M. Böttcher, V. Burwitz +19
We report first results of a multifrequency campaign from radio to hard X-ray energies of the prominent gamma-ray blazar 3C 279 during the first year of the INTEGRAL mission. The v…
The Stellar Populations in the Central Parsecs of Galactic Bulges Central Stellar Populations
Marc Sarzi, Hans-Walter Rix, Joseph C. Shields +5
We present Hubble Space Telescope blue spectra at intermediate spectral resolution for the nuclei of 23 nearby disk galaxies. These objects were selected to have nebular emission i…
Extra-planar H I in the Inner Milky Way
Felix J. Lockman, Yurii Pidopryhora
The extra-planar H I in the inner parts of the Milky Way has been discovered to contain numerous cloud-like structures when observed in the 21cm line with the Green Bank Telescope…
The Survey of Nearby Nuclei with STIS (SUNNS):Emission-Line Nuclei at Hubble Space Telescope Resolution
Joseph C. Shields, Hans-Walter Rix, Marc Sarzi +6
We present results from a program of optical spectroscopy for 23 nearby galaxy emission-line nuclei. This investigation takes advantage of the spatial resolution of the Hubble Spac…