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dc.contributor | Universitat de Barcelona |
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dc.contributor.author | MAGIC Collaboration |
dc.contributor.author | Marcote Martin, Benito |
dc.contributor.author | Moldón Vara, Francisco Javier |
dc.contributor.author | Munar i Adrover, Pere |
dc.contributor.author | Paredes i Poy, Josep Maria |
dc.contributor.author | Ribó Gomis, Marc |
dc.contributor.author | Zanin, Roberta |
dc.date | 2014-10-14T10:37:36Z |
dc.date | 2014-10-14T10:37:36Z |
dc.date | 2014-03 |
dc.date | 2014-10-14T10:37:36Z |
dc.identifier.citation | 0004-6361 |
dc.identifier.citation | 644035 |
dc.identifier.uri | http://hdl.handle.net/2445/58584 |
dc.description.abstract | Motivated by the prediction of a high TeV luminosity we investigated whether the blazar 1ES 1727+502 (z = 0.055) is emitting very high energy (VHE, E > 100 GeV) γ rays. We observed the BL Lac object 1ES 1727+502 in stereoscopic mode with the two MAGIC telescopes for 14 nights between May 6th and June 10th 2011, for a total effective observing time of 12.6 h. To study the multiwavelength spectral energy distribution (SED), we used simultaneous optical R-band data from the KVA telescope, archival UV/optical and X-ray observations from instruments UVOT and XRT on board of the Swift satellite, and high energy (HE, 0.1 GeV-100 GeV) γ-ray data from the Fermi-LAT instrument. We detected, for the first time, VHE γ-ray emission from 1ES 1727+502 at a statistical significance of 5.5σ. The integral flux above 150 GeV is estimated to be (2.1 ± 0.4)% of the Crab nebula flux and the de-absorbed VHE spectrum has a photon index of (2.7 ± 0.5). No significant short-term variability was found in any of the wavebands presented here. We model the SED using a one-zone synchrotron self-Compton model obtaining parameters typical for this class of sources. |
dc.format | 7 p. |
dc.format | application/pdf |
dc.language.iso | eng |
dc.publisher | Springer Verlag |
dc.relation | Versió postprint del document publicat a: http://dx.doi.org/10.1051/0004-6361/201321360 |
dc.relation | Astronomy and Astrophysics, 2014, vol. 563, num. A90, p. 1-7 |
dc.relation | http://dx.doi.org/10.1051/0004-6361/201321360 |
dc.rights | (c) Springer Verlag, 2014 |
dc.rights | info:eu-repo/semantics/openAccess |
dc.subject | Galàxies |
dc.subject | Raigs gamma |
dc.subject | Telescopis |
dc.subject | Nucli galàctic actiu |
dc.subject | Astrofísica |
dc.subject | Galaxies |
dc.subject | Gamma rays |
dc.subject | Telescopes |
dc.subject | Active galactic nuclei |
dc.subject | Astrophysics |
dc.title | Discovery of very high energy gamma-ray emission from the blazar 1ES 1727+502 with the MAGIC Telescopes |
dc.type | info:eu-repo/semantics/article |
dc.type | info:eu-repo/semantics/acceptedVersion |