SIMBAD references

2014ApJ...782...70K - Astrophys. J., 782, 70 (2014/February-3)

Ultra high-energy neutrinos via heavy-meson synchrotron emission in strong magnetic fields.

KAJINO T., TOKUHISA A., MATHEWS G.J., YOSHIDA T. and FAMIANO M.A.

Abstract (from CDS):

We explore the generation and possibility for the detection of heavy-meson synchrotron emission due to the acceleration of ultra-relativistic protons (and possibly nuclei) in the presence of strong magnetic fields (H ≳ 1015 G) in transient astrophysical environments such as magnetar flares. We show that, in addition to the well-known pion synchrotron emission, heavy vector mesons like ρ, DS, J/Ψ, and Υ could be generated. For high enough energies and magnetic field strengths, such heavy vector mesons can be formed with high intensity (∼103 times the photon intensity) through strong couplings to the ultra-relativistic nucleons. We examine in particular the synchrotron emission and subsequent cooling and decay of the heavy ρ0 and Υ(1S) mesons, e.g., via p ⟶ p' + Υ(1S), Υ(1S) ⟶ τ+ + τ, τ ⟶ µ µ + ντ and + e + e + ντ. We evaluate the spectra of escaping νe, νµ, and ντ due to the decay of short-lived τ mesons. We deduce the possible event rate in a terrestrial TeV neutrino detector. We estimate that neutrinos produced from the heavy vector-meson synchrotron radiation from a strong magnetar soft gamma repeater burst will only be detectable with the current generation of detectors if the source is very nearby (<30 pc). Nevertheless, if ever detected, the existence of heavy meson synchrotron emission might be identifiable by the unique signature of energetic tau neutrinos emanating from the source.

Abstract Copyright:

Journal keyword(s): astroparticle physics - neutrinos - radiation mechanisms: non-thermal - stars: magnetars

Simbad objects: 3

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