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Pregled bibliografske jedinice broj: 619904

Časopis

Autori: Aleksić, Jelena; ...; Dominis Prester, Dijana; ...; Ferenc, Daniel; ...; Godinović, Nikola; ...; Hrupec, Dario; ...; Lelas, Damir; ...; Puljak, Ivica; ...; Surić, Tihomir; ...; Šnidarić, Iva; ...; Terzić, Tomislav; ...; Buson, S.
Naslov: Discovery of very high energy gamma-ray emission from the blazar 1ES 1727+502 with the MAGIC Telescopes
Izvornik: Astronomy and astrophysics (0004-6361) 563 (2014); A90-1-A90-6
Vrsta rada: članak
Ključne riječi: BL Lac objects: individual(1ES 1727+502); galaxies: active; gamma rays
Sažetak:
Motivated by the Costamante & Ghisellini (2002) predictions we investigated if the blazar 1ES 1727+502 (z=0.055) is emitting very high energy (VHE, E>100 GeV) gamma rays. We observed the BL Lac object 1ES 1727+502 in stereoscopic mode with the two MAGIC telescopes during 14 nights between May 6th and June 10th 2011, for a total effective observing time of 12.6 hours. For the study of the multiwavelength spectral energy distribution (SED) we use simultaneous optical R-band data from the KVA telescope, archival UV/optical and X-ray observations by instruments UVOT and XRT on board of the Swift satellite and high energy (HE, 0.1 GeV - 100 GeV) gamma-ray data from the Fermi-LAT instrument. We detect, for the first time, VHE gamma-ray emission from 1ES 1727+502 at a statistical significance of 5.5 sigma. The integral flux above 150 GeV is estimated to be (2.1\pm0.4)% of the Crab Nebula flux and the de-absorbed VHE spectrum has a photon index of (2.7\pm0.5). 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.
Projekt / tema: HRZZ-09/176
Izvorni jezik: ENG
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Kategorija: Znanstveni
Znanstvena područja:
Fizika
Puni text rada: 619904.1ES1727502.pdf
URL Internet adrese: http://fulir.irb.hr/1659/
http://arxiv.org/abs/1302.6140v1
http://dx.doi.org/10.1051/0004-6361/201321360
Broj citata:
Altmetric:
DOI: 10.1051/0004-6361/201321360
URL cjelovitog teksta: http://fulir.irb.hr/1659/
Google Scholar: Discovery of very high energy gamma-ray emission from the blazar 1ES 1727+502 with the MAGIC Telescopes
Upisao u CROSBI: Dario Hrupec (Dario.Hrupec@irb.hr), 26. Vel. 2013. u 15:28 sati



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