Napredna pretraga

Pregled bibliografske jedinice broj: 498422

PG 1553+113: five years of observations with MAGIC


Aleksić, Jelena; ...; Dominis Prester, Dijana; ...; Ferenc, Daniel; ...; Godinović, Nikola; ...; Hrupec, Dario; ... et al.
PG 1553+113: five years of observations with MAGIC // The Astrophysical journal, 748 (2012), 46; 1-11 doi:10.1088/0004-637X/748/1/46 (međunarodna recenzija, članak, znanstveni)


Naslov
PG 1553+113: five years of observations with MAGIC

Autori
Aleksić, Jelena ; ... ; Dominis Prester, Dijana ; ... ; Ferenc, Daniel ; ... ; Godinović, Nikola ; ... ; Hrupec, Dario ; ... ; Lelas, Damir ; ... ; Puljak, Ivica ; ... ; Surić, Tihomir ; ... ; Terzić, Tomislav ; ... ; D'Ammando, F.

Izvornik
The Astrophysical journal (0004-637X) 748 (2012), 46; 1-11

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
098-0982931-2875 - Foton-atom međudjelovanje i korelacije (Tihomir Surić, )
HRZZ-02.01/12 - Astročestična fizika u Hrvatskoj - razvoj tehnološke baze i višeinstitucionalne suradnje kao preduvjeta za ravnopravno djelovanje u novim međunarodnim projektima (Daniel Ferenc, )

Ustanove
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Institut "Ruđer Bošković", Zagreb,
Sveučilište u Rijeci - Odjel za fiziku

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Citati