Tomaschitz, R. (2014). Tachyonic quantum densities of relativistic electron plasmas: Cherenkov spectra of γray pulsars, Physics Letters A 378, 23372344, DOI: 10.1016/j.physleta.2014.06.005
Abstract (ScienceDirect, SAO/NASA ADS)
Tachyonic Cherenkov radiation in second quantization can explain the subexponential spectral tails of GeV gammaray pulsars (Crab pulsar, PSR J1836+5925, PSR J0007+7303, PSR J2021+4026) recently observed with the FermiLAT, VERITAS and MAGIC telescopes. The radiation is emitted by a thermal ultrarelativistic electron plasma. The Cherenkov effect is derived from a MaxwellProca field with negative masssquare in a dispersive spacetime. The frequency variation of the tachyon mass results in exp(betaˆomega) attenuation of the asymptotic Cherenkov energy flux, where betaˆ is a decay constant related to the electron temperature and rho is the frequency scaling exponent of the tachyon mass. An exponent in the range 0<rho<1 can reproduce the observed subexponential decay of the energy flux. For the Crab pulsar, we find rho=0.81±0.02, inferred from the substantially weakerthanexponential decay of its spectral tail measured by MAGIC over an extended energy range. The scaling exponent rho determines whether the group velocity of the tachyonic gammarays is sub or superluminal.
95.30.Gv Radiation mechanisms; polarization
41.60.Bq Cherenkov radiation
97.60.Gb Pulsars
52.27.Ny Relativistic plasmas
Title: 

Tachyonic quantum densities of relativistic electron plasmas: Cherenkov spectra of gammaray pulsars 
Authors: 

Tomaschitz, Roman 
Affiliation: 

AA(Department of Physics, Hiroshima University, 131 Kagamiyama, HigashiHiroshima 7398526, Japan 0000000187354503) 
Publication: 

Physics Letters A, Volume 378, Issue 3233, p. 23372344. 
Publication Date: 

06/2014 
Origin: 


Abstract Copyright: 

(c) 2014 Elsevier B.V. 
DOI: 


Bibliographic Code: 

description: Roman Tomaschitz (2014) Tachyonic quantum densities of relativistic electron plasmas: Cherenkov spectra of gammaray pulsars, Phys. Lett. A 378, 2337.
Keywords: quantized tachyonic Cherenkov densities, frequencydependent tachyon mass, superluminal radiation in a permeable spacetime, transversal and longitudinal energy flux, tachyonic spectral fits to gammaray pulsars, subexponential Weibull decay of spectral tails, absolute spacetime, aether, radiation modes with negative masssquare, tachyonic MaxwellProca fields, tachyonic field strengths and inductions, tachyons in a dispersive spacetime, relativistic electron plasma, spectral asymptotics of tachyonic Cherenkov flux, Crab pulsar, PSR J1836+5925, PSR J0007+7303, PSR J2021+4026
Highlights
Quantized tachyonic Cherenkov densities lead to subexponential spectral decay.
Gammaray spectral fits to Crab pulsar, PSR J1836+5925, PSR J0007+7303, PSR J2021+4026.
The polarization of gammarays is analyzed in the quasiclassical regime and quantum limit.
Three degrees of polarization due to the negative masssquare of the MaxwellProca field.
Weibull decay of spectral tails caused by frequency scaling of the tachyon mass.
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