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The paper describes the different methods, used in the MAGIC experiment, to unfold experimental energy distributions of cosmic ray particles (g-rays). Questions and problems related to the unfolding are discussed. Various procedures are proposed which can help to make the unfolding robust and reliable. The different methods and procedures are implemented in(More)
We report the detection of a new source of very high energy (VHE; GeV) g-ray emission located close E ≥ 100 g to the Galactic plane, MAGIC J0616 225, which is spatially coincident with supernova remnant IC 443. The observations were carried out with the MAGIC telescope in the periods 2005 December–2006 January and 2006 December–2007 January. Here we present(More)
We report on the results from the observations in the very high energy band (VHE; GeV) of the black E ≥ 100 g hole X-ray binary (BHXB) Cygnus X-1. The observations were performed with the MAGIC telescope, for a total of 40 hr during 26 nights, spanning the period between 2006 June and November. Searches for steady g-ray signals yielded no positive result,(More)
M87 is the only known nonblazar radio galaxy to emit very high energy (VHE) gamma rays. During a monitoring program of M87, a rapid flare in VHE gamma-rays was detected by the MAGIC telescope in early 2008. The flux was found to be variable above 350 GeV on a timescale as short as 1 day at a significance level of 5.6 j. The highest measured flux reached 15%(More)
The flat-spectrum radio quasar PKS1441+25 at a redshift of z = 0.940 is detected between 40 and 250 GeV with a significance of 25.5σ using the MAGIC telescopes. Together with the gravitationally lensed blazar QSOB0218 +357 (z = 0.944), PKS1441+25 is the most distant very high energy (VHE) blazar detected to date. The observations were triggered by an(More)
E. Domingo-Santamarı́a, J. Flix, V. Scalzotto, W. Wittek, J. Rico for the MAGIC collaboration (a) Institut de Fı́sica d’Altes Energies, Edifici C-n, Campus UAB, 08193 Bellaterra, Spain (b) Dipartimento di Fisica, Università di Padova and INFN Padova, Italy (c) Max-Planck-Institut für Physik, München, Germany (d) Updated collaborators list at(More)
The MAGIC telescope observed the region around the distant blazar 3C 66A for 54.2 hr in 2007 August–December. The observations resulted in the discovery of a γ -ray source centered at celestial coordinates R.A. = 2h23m12s and decl.= 43◦0.′7 (MAGIC J0223+430), coinciding with the nearby radio galaxy 3C 66B. A possible association of the excess with the(More)
The long-duration g-ray burst GRB 050713a was observed by the MAGIC Telescope 40 s after the burst onset and followed up for 37 minutes, until twilight. The observation, triggered by a Swift alert, covered energies above ≈175 GeV. Using standard MAGIC analysis, no evidence of a g-ray signal was found. As the redshift of the GRB was not measured directly,(More)
We present the results from a multiwavelength campaign on the TeV blazar 1ES 1959+650, performed in 2006May. Data from the optical, UV, softand hard-X-ray, and very high energy (VHE) gamma-ray (E > 100 GeV) bands were obtained with the Suzaku and Swift satellites, the MAGIC telescope, and other ground-based facilities. The source spectral energy(More)