Comparison of the parameters of radio-quiet and radio-loud gamma-ray pulsars

The periods, period derivatives, surface magnetic fields, magnetic fields near the light cylinder, and rates of loss of rotational energy for two groups of gamma-ray pulsars are compared, for which radio emission has and has not been detected. The mean values of these parameters are similar for the...

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Bibliographic Details
Published in:Astronomy reports 2015-09, Vol.59 (9), p.865-872
Main Authors: Malov, I. F., Timirkeeva, M. A.
Format: Article
Language:English
Subjects:
Astronomy
Cylinders
Derivatives
Gamma rays
Magnetic fields
Observations and Techniques
Physics
Physics and Astronomy
Pulsars
Radio emission
Synchrotrons
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Summary:The periods, period derivatives, surface magnetic fields, magnetic fields near the light cylinder, and rates of loss of rotational energy for two groups of gamma-ray pulsars are compared, for which radio emission has and has not been detected. The mean values of these parameters are similar for the two groups, but their distributions differ. For example, in the radio-loud objects, the magnetic field at the light cylinder B LC displays a nearly Gaussian distribution, while this distribution is nearly uniform for the radio-quiet group. As a rule, the radio-loud group has higher values of B LC . A correlation between the gammaray luminosity of the pulsars and B LC is found, suggesting that the radiation is generated near the light cylinder, probably due to the synchrotron mechanism.
ISSN:1063-7729
1562-6881
DOI:10.1134/S1063772915080053