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- W2034169934 abstract "We present the results of observations of blazar PKS 1510−089 with the Herschel Space Observatory PACS and SPIRE instruments, together with multiwavelength data from Fermi/LAT, Swift, SMARTS, and Submillimeter Array. The source was found in a quiet state, and its far-infrared spectrum is consistent with a power law with a spectral index of α ≃ 0.7. Our Herschel observations were preceded by two orphan gamma-ray flares. The near-infrared data reveal the high-energy cutoff in the main synchrotron component, which cannot be associated with the main gamma-ray component in a one-zone leptonic model. This is because in such a model the luminosity ratio of the external-Compton (EC) and synchrotron components is tightly related to the frequency ratio of these components, and in this particular case an unrealistically high energy density of the external radiation would be implied. Therefore, we consider a well-constrained two-zone blazar model to interpret the entire data set. In this framework, the observed infrared emission is associated with the synchrotron component produced in the hot-dust region at the supra-parsec scale, while the gamma-ray emission is associated with the EC component produced in the broad-line region at the sub-parsec scale. In addition, the optical/UV emission is associated with the accretion disk thermal emission, with the accretion disk corona likely contributing to the X-ray emission." @default.
- W2034169934 created "2016-06-24" @default.
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- W2034169934 date "2012-11-07" @default.
- W2034169934 modified "2023-09-23" @default.
- W2034169934 title "<i>HERSCHEL</i>PACS AND SPIRE OBSERVATIONS OF BLAZAR PKS 1510–089: A CASE FOR TWO BLAZAR ZONES" @default.
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- W2034169934 doi "https://doi.org/10.1088/0004-637x/760/1/69" @default.
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