Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-07-18
Astropart.Phys.24:301-315,2005
Astronomy and Astrophysics
Astrophysics
25 pages, 5 figures, accepted for publication in Astroparticle Physics
Scientific paper
10.1016/j.astropartphys.2005.07.
Fast spinning magnetars are discussed as strong sources of high energy neutrinos. Pulsars may be born with a short rotation period of milliseconds with the magnetic field amplified through dynamo processes up to $\sim 10^{15}-10^{16} \rm G$. As such millisecond magnetars (MSMs) have an enormous spin-down power $\sim 10^{50} {\rm erg} {\rm s}^{-1}$, they can be potentially a strong, extragalactic high-energy neutrino source. Specifically, acceleration of ions and subsequent photomeson production within the MSM magnetosphere are considered. As in normal pulsars, particle acceleration leads to electron-positron pair cascades that constrains the acceleration efficiency. The limit on the neutrino power as a fraction of the spin-down power is calculated. It is shown that neutrinos produced in the inner magnetosphere have characteristic energy about a few $\times100$ GeV due to the constraint of cooling of charged pions through inverse Compton scattering. TeV neutrinos may be produced in the outer magnetosphere where ions can be accelerated to much higher energies and the pion cooling is less severe than in the inner magnetosphere. High energy neutrinos can also be produced from interactions between ultra-high energy protons accelerated in the magnetosphere and a diffuse thermal radiation from the ejecta or from the interaction region between the MSM wind and remnant shell. The detectability of neutrinos in the early spin-down phase by the current available and planned neutrino detectors is discussed.
No associations
LandOfFree
High energy neutrinos from fast spinning magnetars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with High energy neutrinos from fast spinning magnetars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High energy neutrinos from fast spinning magnetars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-187566