Discovery of VHE gamma-ray emission from the blazar 1ES 1215+303 by the MAGIC telescopes and modeling of the multi-wavelength spectrum

被引：0

作者：

Sitarek, J. ^{[1
]}

Gonzalez, J. Becerra ^{[2
]}

Colin, P. ^{[3
]}

Lindfors, E. ^{[4
]}

Lombardi, S. ^{[5
]}

Stamerra, A. ^{[6
]}

Tavecchio, F. ^{[5
]}

Buson, S. ^{[7
]}

Lahteenmaki, A. ^{[8
]}

机构：

[1] IFAE, Edifici Cn,Campus UAB, E-08193 Bellaterra, Spain

[2] Univ Hamburg, Inst Experimentalphys, Hamburg, Germany

[3] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[4] Univ Turku, Finnish Ctr Astron ESO FINCA, Turku, Finland

[5] INAF Natl Inst Astrophys, Rome, Italy

[6] Univ Siena, INFN, I-53100 Siena, Italy

[7] Univ Padua, INFN, I-35131 Padua, Italy

[8] Aalto Univ, Metsahovi Radio Observ, Tampere, Finland

来源：

HIGH ENERGY GAMMA-RAY ASTRONOMY | 2012年 / 1505卷

基金：

芬兰科学院;

关键词：

Gamma rays; observations-BL Lacertae objects; individual; 1ES 1215+303; POLARIZATION;

D O I：

10.1063/1.4772344

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results of the 2011 multi-wavelength campaign on the BL Lac object 1ES 1215+303. Observations were triggered by an optical outburst and resulted in the first detection of the very high energy (VHE, > 100GeV) gamma-ray emission from this source. We perform spectral modeling of the simultaneous and quasi-simultaneous radio, optical, X-ray, HE and VHE emission and compare it with the spectra obtained from a low emission state observed in 2010. The optical photo-polarimetric data seem to suggest that the high state could be caused by a shock traveling down the jet and colliding with a standing shock with different magnetic field orientation. The spectral energy distribution obtained with the 2011 data can be modeled with a simple one zone SSC model, but it requires extreme values for the Doppler factor or the electron energy distribution. This suggests a more complicated scenario than a simple SSC one to occur in this source.

引用

页码：651 / 655

页数：5

共 31 条

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