Hrvatska znanstvena bibliografija (CROSBI)



Pregled bibliografske jedinice broj: 673066

Časopis

Autori: Aleksić, Jelena; ...; Babić, Ana; ...; Dominis Prester, Dijana; ...; Ferenc, Daniel; ...; Godinović, Nikola; ...; Hrupec, Dario; ...; Lelas, Damir; ...; Puljak, Ivica; ...; Surić, Tihomir; ...; Šnidarić, Iva; ...; Terzić, Tomislav; ...
Naslov: Discovery of very high energy gamma-ray emission from the blazar 1ES 0033+595 by the MAGIC telescopes
Izvornik: Monthly notices of the Royal Astronomical Society (0035-8711) 446 (2015), 1; 217-225
Vrsta rada: članak
Ključne riječi: galaxies: BL Lacertae objects: individual (1ES 0033+595); gamma rays: galaxies
Sažetak:
The number of known very high energy (VHE) blazars is ∼50, which is very small in comparison to the number of blazars detected in other frequencies. This situation is a handicap for population studies of blazars, which emit about half of their luminosity in the gamma-ray domain. Moreover, VHE blazars, if distant, allow for the study of the environment that the high-energy gamma-rays traverse in their path towards the Earth, like the extragalactic background light (EBL) and the intergalactic magnetic field (IGMF), and hence they have a special interest for the astrophysics community. We present the first VHE detection of 1ES 0033+595 with a statistical significance of 5.5 sigma. The VHE emission of this object is constant throughout the MAGIC observations (2009 August and October), and can be parameterized with a power law with an integral flux above 150 GeV of (7.1+-1.3)x10^(−12) ph cm^(−2) s^(−1) and a photon index of (3.8+-0.7). We model its spectral energy distribution (SED) as the result of inverse Compton scattering of synchrotron photons. For the study of the SED we used simultaneous optical R-band data from the KVA telescope, archival X-ray data by Swift as well as INTEGRAL, and simultaneous high energy (HE, 300 MeV - 10 GeV) gamma-ray data from the Fermi LAT observatory. Using the empirical approach of Prandini et al. (2010) and the Fermi-LAT and MAGIC spectra for this object, we estimate the redshift of this source to be 0.34+-0.08+-0.05. This is a relevant result because this source is possibly one of the ten most distant VHE blazars known to date, and with further (simultaneous) observations could play an important role in blazar population studies, as well as future constraints on the EBL and IGMF.
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
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Kategorija: Znanstveni
Znanstvena područja:
Fizika
Puni text rada: 673066.1ES0033595.pdf
URL Internet adrese: http://fulir.irb.hr/1677/
http://arxiv.org/abs/1410.7059
http://mnras.oxfordjournals.org/content/446/1/217
Broj citata:
Altmetric:
DOI: 10.1093/mnras/stu2024
URL cjelovitog teksta: http://fulir.irb.hr/1677/
Google Scholar: Discovery of very high energy gamma-ray emission from the blazar 1ES 0033+595 by the MAGIC telescopes
Upisao u CROSBI: Dario Hrupec (Dario.Hrupec@irb.hr), 6. Sij. 2014. u 10:03 sati