Observations of 1ES 0647 250 and 1ES 0806 524 with VERITAS - AstrophysicsReport as inadecuate




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Abstract: Observations of the blazars 1ES 0647+250 and 1ES 0806+524 with VERITAS arereported here. These objects are among the favoured candidate extragalacticsources in the very high-energy regime due to the presence of high-energyelectrons and adequate seed photons. The presence of high-energy electrons isestablished from the location of the synrchrotron peak in the spectral energydistribution of the blazars. The presence of adequate seed photons isdetermined by the flux in the radio-through-optical wavebands. These are thekey ingredients for very high-energy gamma-ray emission in the context of thesynchrotron self-Compton model. The redshift of 1ES 0647+250 has beententatively reported as 0.203 and the redshift of 1ES 0806+524 is 0.138, thusthe detection of very high-energy gamma-ray emission from these objects couldmake significant contributions to the understanding of the extragalacticinfrared background light. The analysis of these data relies on standardtechniques in very high-energy gamma-ray astronomy, and the results arecompared to previously reported upper limits and to theoretical predictions.



Author: P. Cogan, for the VERITAS collaboration

Source: https://arxiv.org/







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