Abstract
Cen X-3 is probably a neutron star, releasing the infall energy of accreted matter. Sufficient material for accretion will be provided by a conventional stellar wind from its more massive companion star. That star is not likely to rotate synchronously; therefore a ‘Roche lobe’ analysis of the eclipses is not valid. A ‘tidal lobe’ analysis allows the neutron star to have a mass of the order of one solar mass. Overflow of the ‘Roche lobe’ is neither necessary as a source of mass nor probable in view of the observed stellar line widths of the two identified X-ray companions.
The mass flow onto the condensed star is very small in all cases. It is limited, for an object of m solar masses by the Eddington Limiting Luminosity to \({\dot M_{ac}} < {10^{ - 7.4}}m\left( {{M_ \odot } y{r^{ - 1}}} \right)\), which limit applies even if the accreting object contacts or traverses its companion star.
The observed 4.84 s rotation period of the Cen X-3 neutron star is very simply explained as the critical value where a centrifugal barrier regulates the rate of infall to the surface. The X-ray spectrum is understood as blackbody radiation coming from a well-defined area near each magnetic pole of the neutron star.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Beals, C. S.: 1951, Publ. Dom. Astrophys. Obs. 9, 1.
Bolton, C.: 1971, Bull. Am. Astron. Soc. 3, No. 4.
Bondi, H. and Hoyle, F.: 1944, Monthly Notices Roy. Astron. Soc. 104, 273.
Carruthers, G. R.: 1968, Astrophys. J. 151, 269.
Eddington, A.: 1926, The Internal Constitution of the Stars, (reprinted by Dover, New York, 1959 ).
Gott, J. R., Gunn, J. E., and Ostriker, J. P.: 1970, Astrophys. J. 160, L91.
Gribben, J.: 1971, Nature 233, 19.
Hiltner, W. A., Werner, J., and Osmer, P.: 1972, Astrophys. J. Letters,(in press).
Jeans, J. H.: 1919, Problems of Cosmogony and Stellar Dynamics, Cambridge Univ. Press.
Jeans, J. H.: 1928, Astronomy and Cosmogony, Cambridge Univ. Press.
Leach, R. and Ruffin, R.: 1972, (preprint).
Lucy, L. B. and Solomon, P. M.: 1970, Astrophys. J. 159, 879.
Morton, D. C.: 1967, Astrophys. J. 147, 1017.
Morton, D. C.: 1969, Astron. Space Sci. 3, 117.
Ostriker, J. P.: 1968, Nature 217, 1227.
Ostriker, J. P., Rees, M., and Silk, J.: 1970, Astrophys. Letters 6, 179.
Ostriker, J. P. and Tassoul, J.-L.: 1968, Nature 219, 577.
Salpeter, E. E.: 1972, this volume, p. 135.
Schreier, E., Levinson, R., Gursky, H., Kellogg, E., Tananbaum, H., and Giacconi, R.: 1972, Astrophys. J. 172, L79.
Tanabaum, H., Gursky, H., Kellogg, E. M., Levinson, R., Schreier, E., and Giacconi, R.: 1972, Astrophys. J. Letters,(in press).
van den Heuvel, E. P. J.: 1970, in A. Slettebak (ed.), Stellar Rotation, D. Reidel Publ. Co., Dordrecht-Holland, p. 178.
van den Heuvel, E. P. J. and Heise, J.: 1972, Nature,(in press).
Webster, B. L. and Murdin, P.: 1972, Nature 235, 37.
Wilson, R. E.: 1972, Astrophys. J. 174, L27.
Zel’dovich, Ya. B. and Novikov, I. D.: 1964, Soy. Phys. Dokl. 9, 246.
Zel’dovich, Ya. B. and Novikov, I. D.: 1971, Relativistic Astrophysics, Vol. 1, Univ. of Chicago Press, Chicago, Chap. 13.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1973 International Astronomical Union
About this chapter
Cite this chapter
Ostriker, J.P., Davidson, K. (1973). Models for Compact Pulsing X-ray Sources. In: Bradt, H., Giacconi, R. (eds) X- and Gamma-Ray Astronomy. International Astronomical Union/Union Astronomique Internationale, vol 55. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-2585-0_12
Download citation
DOI: https://doi.org/10.1007/978-94-010-2585-0_12
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-277-0337-8
Online ISBN: 978-94-010-2585-0
eBook Packages: Springer Book Archive