Reference : Neutrinos from photo-hadronic interactions in Pks2155-304
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
Neutrinos from photo-hadronic interactions in Pks2155-304
Becker, J. [> >]
Meli, Athina mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Physique des astroparticules >]
Biermann, Peter [> >]
Nuclear Instruments & Methods in Physics Research Section A
Elsevier Science
Yes (verified by ORBi)
The Netherlands
[en] The high-peaked BL Lac object Pks2155-304 shows high variability at multiwavelengths, i.e. from optical up to TeV energies. A giant flare of around 1 h at X-ray and TeV energies was observed in 2006 [1]. In this context, it is essential to understand the physical processes in terms of the primary spectrum and the radiation emitted, since high-energy emission can arise in both leptonic and hadronic processes. In this contribution, we investigate the possibility of neutrino production in photo-hadronic interactions. In particular, we predict a direct correlation between optical and TeV energies at sufficiently high optical radiation fields. We show that in the blazar Pks2155-304, the optical emission in the low-state is sufficient to lead to photo-hadronic interactions and therefore to the production of high-energy photons.

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