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Pregled bibliografske jedinice broj: 498422

Časopis

Autori: Aleksić, Jelena; ...; Dominis Prester, Dijana; ...; Ferenc, Daniel; ...; Godinović, Nikola; ...; Hrupec, Dario; ...; Lelas, Damir; ...; Puljak, Ivica; ...; Surić, Tihomir; ...; Terzić, Tomislav; ...; D'Ammando, F.
Naslov: PG 1553+113: five years of observations with MAGIC
Izvornik: The Astrophysical journal (0004-637X) 748 (2012), 46; 1-11
Vrsta rada: članak
Ključne riječi: radiation mechanisms: non-thermal; gamma-rays: observations; BL Lacertae objects: individual (PG 1553+113)
Sažetak:
We present the analysis of three years (2007- 2009) of MAGIC observations of the BL Lac object PG 1553+113 at very high energies (VHEs). Adding the new data set to previous observations, this source becomes one of the best long-term followed sources at energies above 100 GeV. Power law fits of the individual years are compatible with a steady mean photon index 4.27 ± 0.14. In the last three years of data, the flux level above 150 GeV shows a marginal variability, in the range from 4% to 11% of the Crab Nebula flux. Simultaneous optical measurements confirm a modest variability. We also performed a temporal analysis of all available Fermi/LAT data of PG 1553+113 above 1GeV, which reveals a clear variability in the 2008–2009 sample. Finally, we present a combination of the mean spectrum measured at very high energies with archival data available for other wavelengths. The mean spectral energy distribution can be modeled with a one–zone SSC model, which gives the main physical parameters governing the VHE emission in the blazar jet.
Projekt / tema: 098-0982931-2875, HRZZ-02.01/12
Izvorni jezik: ENG
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Kategorija: Znanstveni
Znanstvena područja:
Fizika
Puni text rada: 498422.PG1553113v4.pdf (tekst priložen 28. Ožu. 2012. u 01:17 sati)
URL Internet adrese: http://fulir.irb.hr/1481/
http://iopscience.iop.org/0004-637X/748/1/46?fromSearchPage=true
http://arxiv.org/abs/1101.2764v4
Broj citata:
Altmetric:
DOI: 10.1088/0004-637X/748/1/46
URL cjelovitog teksta: http://fulir.irb.hr/1481/
Google Scholar: PG 1553+113: five years of observations with MAGIC
Upisao u CROSBI: dhrupec@irb.hr (dhrupec@irb.hr), 16. Sij. 2011. u 17:46 sati



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