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in creator/contributor: "Paneque, D"  
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Study of the Flux and Spectral Variations in the VHE Emission from the Blazar Markarian 501, with the MAGIC Telescope

Description: The blazar Markarian 501 (Mrk 501) was observed above 100 GeV with the MAGIC Telescope during May, June and July 2005. The high sensitivity of the instrument made possible the detection of the source with high significance in each of the observing nights. During this observational campaign, the emitted gamma-ray flux from Mkn 501 was found to vary by one order of magnitude, and showed a high correlation with spectral changes. Intra-night flux variability was also observed, with flux-doubling ti… more
Date: June 13, 2007
Creator: Paneque, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Hints of the Existence of Axion-Like-Particles From the Gamma-Ray Spectra of Cosmological Sources

Description: Axion Like Particles (ALPs) are predicted to couple with photons in the presence of magnetic fields. This effect may lead to a significant change in the observed spectra of gamma-ray sources such as AGNs. Here we carry out a detailed study that for the first time simultaneously considers in the same framework both the photon/axion mixing that takes place in the gamma-ray source and that one expected to occur in the intergalactic magnetic fields. An efficient photon/axion mixing in the source al… more
Date: June 23, 2009
Creator: Sanchez-Conde, M. A.; Paneque, D.; Bloom, E.; Prada, F. & Dominguez, A.
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Partner: UNT Libraries Government Documents Department
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GLAST and Ground-Based Gamma-Ray Astronomy

Description: The launch of the Gamma-ray Large Area Space Telescope (GLAST) in 2007 will open the possibility of combined studies of astrophysical sources with existing ground-based VHE {gamma}-ray experiments such as H.E.S.S., VERITAS and MAGIC. Ground-based {gamma}-ray observatories provide complementary capabilities for spectral, temporal, spatial and population studies of high-energy {gamma}-ray sources. Joint observations cover a huge energy range, from 20 MeV to over 50 TeV. The LAT will survey the en… more
Date: October 10, 2007
Creator: Funk, S.; Carson, J. E.; Giebels, B.; Longo, F.; McEnery, J. E.; Paneque, D. et al.
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Partner: UNT Libraries Government Documents Department
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Novel Technique for Monitoring the Performance of the LAT Instrument on Board the GLAST Satellite

Description: The Gamma-ray Large Area Space Telescope (GLAST) is an observatory designed to perform gamma-ray astronomy in the energy range 20 MeV to 300 GeV, with supporting measurements for gamma-ray bursts from 10 keV to 25 MeV. GLAST will be launched at the end of 2007, opening a new and important window on a wide variety of high energy astrophysical phenomena . The main instrument of GLAST is the Large Area Telescope (LAT), which provides break-through high-energy measurements using techniques typicall… more
Date: June 13, 2007
Creator: Paneque, D.; Borgland, A.; Bovier, A.; Bloom, E.; Edmonds, Y.; Funk, S. et al.
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Partner: UNT Libraries Government Documents Department
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FERMI view of the TeV blazar Markarian 421

Description: The high energy component of the TeV blazar Markarian 421 has been extensively studied since the beginning of the 90s, when the source was first detected at gamma-rays with EGRET and the Whipple Telescope, yet the source is still far from being understood. The high sensitivity, large dynamic range, and excellent time coverage of the Fermi Large Area Telescope (LAT), all representing significant advances over previous gamma-ray observations, will play a key role in the elucidation of the physica… more
Date: August 26, 2010
Creator: Paneque, D; /SLAC /KIPAC, Menlo Park; Raino, S.; /Bari Polytechnic /INFN, Bari; Chiang, J.; /SLAC /KIPAC, Menlo Park et al.
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Partner: UNT Libraries Government Documents Department
open access

Multiwavelength Observations of Mrk 501 in 2008

Description: The well-studied VHE (E > 100 GeV) blazar Mrk 501 was observed between March and May 2008 as part of an extensive multiwavelength observation campaign including radio, optical, X-ray and VHE gamma-ray instruments. Mrk 501 was in a low state of activity during the campaign, with a low VHE flux of about 20% the Crab Nebula flux. Nevertheless, significant flux variations could be observed in X-rays as well as {gamma}-rays. Overall Mrk 501 showed increased variability when going from radio to {g… more
Date: August 25, 2010
Creator: Kranich, D.; /Zurich, ETH; Paneque, D.; /SLAC; Cesarini, A.; /Natl. U. of Ireland, Galway et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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