Abstract
HANKINS' observations1 of pulsars exhibiting structure on time scales as short as a few μs have set stringent requirements on the theories which attempt to explain the pulsar emission mechanism2,3. These microstructure observations1,4,5 were made at low radio frequencies where pulsar intensities are high. To overcome the effects of interstellar dispersion, which effectively ‘smear out’ the microstructure, Hankins developed a complex computation method. Since the effects of dispersion are less pronounced at higher frequencies, microstructure should be directly observable using an appropriate bandwidth. This letter reports high-frequency observations of PSR1133+16 where the dispersion broadening and the time resolution were short enough to reveal microstructure on a time scale of 14 µs.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Hankins, T. H., Astrophys. J., 169, 487 (1971).
Manchester, R. N., Tademaru, E., Taylor, J. H., and Huguenin, G. R., Astrophys. J., 185, 951 (1973).
Zheleznyakov, V. V., and Shaposhnikov, V. E., Astrophys. Space Sci., 33, 141 (1975).
Hankins, T. H., Astrophys. J. Lett., 177, L11 (1972).
Hankins, T. H., and Cordes, J. M., 139th Meeting AAS, 11 January 1973, Las Cruces, New Mexico (1973).
Hachenberg, O., Grahl, B. H., and Wielebinski, R., Proc. IEEE, 61, 1288 (1973).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
FERGUSON, D., GRAHAM, D., JONES, B. et al. Direct observation of pulsar microstructure. Nature 260, 25–27 (1976). https://doi.org/10.1038/260025a0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1038/260025a0
This article is cited by
-
Morphology and characteristics of radio pulsars
The Astronomy and Astrophysics Review (2004)
-
The structure of integrated pulse profiles
Journal of Astrophysics and Astronomy (1980)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.
