Abstract
ON November 11, 1970, a collimated proportional counter sensitive to X rays in the energy range 2.8 to 9.9 keV was flown on a Sun-stabilized Skylark sounding rocket from Woomera, South Australia. During part of the flight the detector field of view was scanned across Vela, including the position of three radio pulsars. The time of each event was telemetered to ground with a time uncertainty of approximately 300 µs, and this allowed a search for fluctuations in the X-ray flux at the period of the observed radio pulsations. The pulsars were PSR0833-45, the Vela pulsar (0.089 s period), MP0835-40 (0.766 s period) and MP0736-40 (0.375 s period).
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
We are sorry, but there is no personal subscription option available for your country.
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
References
Hearn, D., Nucl. Instrum. Meth., 70, 200 (1969).
Sturrock, P. A., Nature, 227, 465 (1970).
Harnden, F. R., and Gorenstein, P., Nature, 241, 108 (1973).
Harnden, F. R., Johnson, W. N., and Haymes, R. C., Astrophys. J. Lett., 172, 91 (1972).
Bunner, A. N., in The Gum Nebula and Related Problems (edit. by Maran, S. P., Brandt, J. C, and Stecker, F. W.) (Goddard Space Flight Center Report X-683-71-375).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
CRUISE, A., NEWTON, A. Upper Limits to the Pulsed X-ray Flux from PSR0833-45, MP0835-40 and MP0736-40. Nature Physical Science 244, 121–122 (1973). https://doi.org/10.1038/physci244121b0
Received:
Issue Date:
DOI: https://doi.org/10.1038/physci244121b0
This article is cited by
-
X-ray flare in 3U 0833–45 the Vela pulsar
Nature (1977)
-
A search for soft X-ray radiation from pulsars with the Astronomical Netherlands Satellite
Astrophysics and Space Science (1976)
-
Pulsed high-energy radiation from oblique magnetic rotators
Astrophysics and Space Science (1975)
-
Pulsed 10–30 MeV gamma rays from PSR0833-45
Nature (1974)