On the Phase-Averaged Spectrum of Pulsars and Shape of Their Cutoffs

Details On the Phase-Averaged Spectrum of Pulsars and Shape of Their Cutoffs On the Phase-Averaged Spectrum of Pulsars and Shape of Their Cutoffs

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aipc.1357..225c&link_type=abstract

RADIO PULSARS: AN ASTROPHYSICAL KEY TO UNLOCK THE SECRETS OF THE UNIVERSE. AIP Conference Proceedings, Volume 1357, pp. 225-228

Computer Science

Numerical Analysis

Pulsars, Acceleration, Gamma-Rays, Numerical Analysis, Pulsars, Particle Acceleration, Gamma-Ray, Numerical Simulation, Solution Of Equations

Scientific paper

All gamma-ray pulsars exhibit an exponential cutoff in their spectra and for bright pulsars the statistics are sufficiently high to study the detailed shape of the cutoff. The phase-averaged spectra of some pulsars exhibit a sub-exponential cutoff, not predicted by any single physical mechanism. Further studies clarified that this gentler average cutoff is a consequence of having significant variations of the cutoff energy in the phase-resolved spectrum. In conclusion, the phase-averaged spectrum of a pulsar is not a physical quantity to test high-energy emission models.

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