Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.280...40w&link_type=abstract
Nature, vol. 280, July 5, 1979, p. 40, 41.
Astronomy and Astrophysics
Astrophysics
6
Hydrogen Clouds, Interstellar Gas, Pulsars, Radio Bursts, Stellar Mass Accretion, Astrophysics, Inhomogeneity, Interstellar Matter, Magnetic Fields
Scientific paper
A model for accretion onto radio pulsars is proposed in which interstellar neutral hydrogen is assumed to infiltrate the light-cylinder and, after ionization, to modulate the pulsed emission. Within this model, observed long-term variations in pulsar emission can be interpreted as the result of inhomogeneities in the interstellar medium. The calculations suggest that pulsars can be 'switched off' while passing through a 'standard' neutral hydrogen cloud with a density of about 10/cu cm.
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