Broad-band optical observations of the extraordinarily bright optical afterglow of the intense gamma-ray burst GRB 991208 started ~2.1 days after the event and...
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PublicaciónThe extraordinarily bright optical afterglow of GRB 991208 and its host galaxy
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CharlaThe Fermi GeV excess: status and perspectives
In this presentation, I will review the history and literature debate about the anomalous gamma-ray emission detected towards the inner Galaxy by the Fermi-LAT...
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PublicaciónThe Gamma-Ray Bright BL Lacertae Object RX J1211+2242
RX J1211+2242 is an optically faint (B~=19.2mag) but X-ray bright (f2-10keV=5×10-12ergscm-2s-1) active galactic nucleus (AGN) that has been shown to be a BL Lac...
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PublicaciónThe GRB 060218/SN 2006aj event in the context of other gamma-ray burst supernovae
The supernova SN 2006aj associated with GRB 060218 is the second-closest GRB-SN observed to date (z=0.033). We present Very Large Telescope, Liverpool Telescope...
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PublicaciónThe HETE-2 satellite: detection of Gamma-Ray Bursts and other transient phenomena
HETE-2 (High Energy Transient Explorer) is a small scientific satellite whose main task is to detect Gamma-Ray Bursts, promptly determine their coordinates...
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PublicaciónThe June 2008 Flare of Markarian 421 from Optical to TeV Energies
We present optical, X-ray, high-energy (lap30 GeV) and very high energy (gap100 GeV; VHE) observations of the high-frequency peaked blazar Mrk 421 taken between...
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CharlaThe nature of gamma-ray binaries
The improvement on the Imaging Air Cherenkov Technique led to the discovery of a new class of compact binaries: the gamma-ray binaries. This small class consist...
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PublicaciónThe Optical/IR Counterpart of the 1998 July 3 Gamma-Ray Burst and Its Evolution
We imaged the X-ray error box of GRB 980703, beginning 22.5 hr after the gamma-ray event, in both the optical R and near-infrared H bands. A fading optical/IR...
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PublicaciónThe Rapid Decay of the Optical Emission from GRB 980326 and Its Possible Implications
We report the discovery of the optical counterpart to GRB 980326. Its rapid optical decay can be characterized by a power law with exponent - 2.10+/-0.13 and a...