Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.117..309s&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 117, no. 2, Dec. 1985, p. 309-325.
Astronomy and Astrophysics
Astrophysics
36
Positronium, Pulsars, Stellar Magnetic Fields, Acceleration, Ionization, Pair Production, Pulsar Magnetospheres, Stellar Luminosity
Scientific paper
The formation of mixed photon-positronium states in a strong magnetic field near a pulsar and photon capture by the field are studied. Before the photon reaches the threshold of free pair creation, the curvature gamma quanta emitted in the pulsar magnetosphere tangentially to the curved lines of force are shown to be canalized by a field stronger than four trillion G by gradual conversion into a positronium atom. This positronium is stable against the ionizing action of the electric field near the pulsar unless it reaches a critical value of about 40 million CGSE for B of about 10 trillion G. This prevents the screening of the electric field up to distances from the pulsar where the magnetic field is below 0.1 B(cr) and free pair creation may become essential. This effect provides a higher theoretical estimate for the total luminosity of pulsars whose field at the surface exceeds 0.1 B(cr).
Shabad Anatoly E.
Usov Vladimir V.
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