Query : 2009A&A...496..751Y

2009A&A...496..751Y - Astronomy and Astrophysics, volume 496, 751-758 (2009/3-4)

Multi-waveband photons and high energy neutrinos from the Crab nebula.


Abstract (from CDS):

We study multi-waveband photon emission properties and possible high-energy neutrino emission from the Crab nebula produced by pulsar's accelerated heavy nuclei. Heavy nuclei are accelerated in the outer magnetosphere of the Crab pulsar, and then suffer partial photo-disintegration in the non-thermal radiation fields of the pulsar's outer magnetosphere. The products (protons and neutrons) of the photo-disintegration and surviving heavier nuclei are injected into the expanding supernova remnant in which the surviving heavier nuclei are further accelerated in the pulsar wind zone. In such a case, relativistic hadrons and leptons are produced; the hadrons consist of direct protons and the protons produced through neutron decay in nuclei disintegration process, the leptons consist of positrons accelerated in a realistic magneto-sonic lepton-heavy iron plasma shock, electrons from the neutron decay, direct electrons, and secondary electron/positron pairs in a proton-proton interaction. We calculate the photo-disintegration rate for a nucleus of atomic number A releasing i nucleons and the hadronic and leptonic spectra in the Crab nebula. We then calculate the multi-waveband non-thermal photon spectrum and possible high-energy neutrino spectrum of the Crab nebula. Our results indicate that the photon spectrum up to ∼10TeV has a leptonic origin, but it is difficult to distinguish leptonic and hadronic origins of the spectrum with energy greater than 10TeV.

Abstract Copyright:

Journal keyword(s): radiation mechanisms: non-thermal - ISM: individual objects: Crab nebula - gamma rays: theory

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
1 M 1 SNR 05 34 30.9 +22 00 53           ~ 6022 1
2 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5117 0

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