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The Collimation-corrected Gamma-Ray Burst Energies Correlate with the Peak Energy of Their νFν Spectrum
We consider all bursts with known redshift and νFν peak energy, E. For a good fraction of them an estimate of the jet opening angle is available from the achromatic break of their afterglow lightExpand
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Stellar evolution through the ages: period variations in galactic RRab stars as derived from the GEOS database and TAROT telescopes
Context. The theory of stellar evolution can be more closely tested if we have the opportunity to measure new quantities. Nowadays, observations of galactic RR Lyr stars are available on a timeExpand
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Late evolution of the X-ray afterglow of GRB 030329
The X-ray afterglow of the Gamma-Ray Burst GRB 030329, associated with SN2003dh at z = 0.1685, has been observed with XMM-Newton 258 days after the burst explosion. A source with a flux of (6.2 ±Expand
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The Coevolution of Supermassive Black Holes and Massive Galaxies at High Redshift
We exploit the recent, wide samples of far-infrared (FIR) selected galaxies followed up in X-rays and of X-ray/optically selected active galactic nuclei (AGNs) followed up in the FIR band, along withExpand
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MAGIC observations of the giant radio galaxy M 87 in a low-emission state between 2005 and 2007
Context. We present the results of a long M 87 monitoring campaign in very high energy.-rays with the MAGIC-I Cherenkov telescope. Aims. We aim to model the persistent non-thermal jet emission byExpand
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SPECTRAL ENERGY DISTRIBUTIONS OF 3C 279 REVISITED: BeppoSAX OBSERVATIONS AND VARIABILITY MODELS
We present the BeppoSAX observations of 3C 279 performed simultaneously during 1997 January 13-23 with γ-ray pointings with EGRET on board the Compton Gamma Ray Observatory and optical observationsExpand
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SWIFT observations of TeV BL Lacertae objects
Context. We present the results of a set of observations of nine TeV detected BL Lac objects performed by the XRT and UVOT detectors on board the Swift satellite between March and December 2005.Expand
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Variable Lyα sheds light on the environment surrounding GRB 090426
TLDR
Long duration gamma-ray bursts are commonly associated with the deaths of massive stars. Expand
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BeppoSAX Observations of Synchrotron X-Ray Emission from Radio Quasars
We present new BeppoSAX Low Energy Concentrator Spectrometer (LECS), Medium Energy Concentrator Spectrometer (MECS), and Phoswich Detector System (PDS) observations of four flat-spectrum radioExpand
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Evidence for a relativistic iron line in GRS 1915+105
We report on the discovery of a relativistic iron K fluorescent emission line in the BeppoSAX spectrum of the microquasar GRS 1915+105, taken on April 19, 1998, when the line was unusually intense.Expand
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