Ultra-relativistic nonthermal power-law ensembles: Cosmic-ray electrons and positron fraction

Tomaschitz, Roman

doi:10.1016/j.physa.2013.09.068

Cited by 8 publications

(2 citation statements)

References 29 publications

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“…Polarized radiation densities averaged over thermal and non-thermal electron distributions. -We average the radiation densities (11) over an electronic power-law distribution [16],…”

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confidence: 99%

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Subexponential decay in Fermi-LAT pulsar spectra: The case for tachyonic Cherenkov radiation

Tomaschitz¹

2014

EPL

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Tachyonic Cherenkov fits are performed to the Fermi-LAT γ-ray spectra of the Vela pulsar, PSR J1709 − 4429 and Geminga. The high-energy spectral tails of these pulsars exhibit pronounced subexponential Weibull decay, which can be modeled in a permeable spacetime by a frequency-dependent tachyon mass. The scaling exponent of the tachyon mass defines the Weibull shape parameter of the energy flux, and it also determines whether the radiation is subor superluminal. The negative mass-square in the tachyonic Maxwell-Proca equations gives rise to a longitudinal flux component. The radiation is generated by an ultra-relativistic thermal electron plasma via the inertial Cherenkov effect. The transversal and longitudinal γ-ray emission from Geminga is slightly superluminal, whereas γ-rays from the Vela pulsar and PSR J1709 − 4429 are subluminal despite the negative tachyonic mass-square in the dispersion relations.

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“…Polarized radiation densities averaged over thermal and non-thermal electron distributions. -We average the radiation densities (11) over an electronic power-law distribution [16],…”

Section: ) With G 0imentioning

confidence: 99%

“…The spectral average of the radiation densities ( 11) is carried out as (16) where θ is the Heaviside step function. We solve the inequality E < E max (γ) for γ, with E max (γ) in ( 13): γ > γ min (E),…”

Section: ) With G 0imentioning

confidence: 99%