Hostname: page-component-8448b6f56d-mp689 Total loading time: 0 Render date: 2024-04-25T02:33:31.568Z Has data issue: false hasContentIssue false
  • English
  • Français

Periods in X-Ray Sources

Published online by Cambridge University Press:  30 March 2016

P. J. N. Davison
P. J. N. Davison*
Affiliation:
Mullard Space Science Laboratory, Holmbury St. Mary, Dorking, Surrey, England

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Known periodicities in X-ray sources cover a wide range of values - a factor of 108 or 109 from the 33 mS of the Crab pulsar up to 35 days for the Her X-1 repeat of its up state, or even years if one believes in the not inconceivable idea that at least one “transient” (perhaps not yet even discovered!) is exhibiting some form of repetitive behaviour. These periodicities are not just astronomical curiosities to keep theoreticians busy speculating. They do have several solid uses which the mere experimenter can take advantage of. These uses do, inevitably overlap, and vary in importance according to whom one is speaking. In the short space available I will concentrate on recent measurements on X-ray sources showing Doppler modulated periodicities, and on sources which may well show such changes when they are studied more closely.

Type
Joint Dicussions
Information
Highlights of Astronomy , Volume 4 , Issue 1: Highlights of Astronomy. As presented at the XVIth General Assembly of the IAU, 1976 (Part I) , 1977 , pp. 74 - 86
Copyright
Copyright © Reidel 1977

References

Avni, Y. and Bahcall, J.N.: 1975, Ap. J. (Letters), 202, L131.Google Scholar
Becker, R.H., Boldt, E.A., et al.: 1976, Ap. J. (Letters), 207, L167.Google Scholar
Bord, D.J., Mook, D.E., Petro, L., and Hiltner, W.A.:1976, Ap.J. 203, 689 Google Scholar
Bradt, H., Mayer, W., et al.: 1976, Ap. J. (Letters), 204, L67.Google Scholar
Chevalier, C. and Ilovaisky, S.: 1974, Astron. and Astrophys., 35, 407.Google Scholar
Chodil, G., Mark, H., Rodriques, R., et al.: 1967, Ap. J., 150, 57.Google Scholar
Cooke, B. and Page, C.: 1975, Nature, 256, 712.Google Scholar
Davidsen, A., Malina, R. and Bowyer, S.: 1976, Goddard Symposium on X-ray Binaries, NASA SP-389, p691.Google Scholar
Davidsen, A., Malina, R. and Bower, S.: 1976, Ap. J., 203, 448.Google Scholar
Davison, P.J. and Fabian, A.C.: 1976, Mon. Not. R. astr. Soc. (in Press).Google Scholar
Deeter, J., Crosa, L., Gerend, D. and Boynton, P.: 1976, Ap. J., 206, 861.Google Scholar
Elsner, R.F. and Lamb, F.K.: 1976, Nature, 262, 356.Google Scholar
Fabian, A.C. and Davison, P.J.N.: 1974, Talk given at Trieste meeting on X-ray Binaries.Google Scholar
Fabian, A.C., Pringle, J. and Rees, M.: 1973, Nature, 244, 212.Google Scholar
Giacconi, R., Murray, S., et al.: 1974, Ap. J. Supp., 27, No. 237.Google Scholar
Glass, I.S. and Feast, M.W.: 1973, Nature Phys. Sci., 245, 39.Google Scholar
Hawkins, F.J., Mason, K.O. and Sanford, P.W.: 1975, Astrophys. Letters, 16, 19.Google Scholar
Hutchings, J.B., Cowley, A.P., et al.: 1974, Ap. J. (Letters), 191 L101.Google Scholar
Jones, C.: 1976, Preprint CFA/NSA 76-144.Google Scholar
Jones, C.A., Chetin, T, and Liller, W.: 1974, Ap. J. (Letters), 190, L1.CrossRefGoogle Scholar
Jones, C. and Forman, W.: 1976, Preprint CFA/HEA 76–123.Google Scholar
Lewin, W.H.G., Doty, J., et al.: 1976a, Ap. J. (Letters), 207, L95.Google Scholar
Lewin, W.H.G., Hoffman, J. and Doty, J.: 1976b, Paper at High Energy Astrophysics Division meeting of the AAS at Cambridge, Massachusetts.Google Scholar
Lewin, W.H.G., Ricker, G.R. and McClintock, J.E.: 1971, Ap. J. (Letters), 169, L17.Google Scholar
Liller, W.: 1975a, IAU Circ., No. 2780.Google Scholar
Liller, W.: 1975b, IAU Circ, No. 2888.Google Scholar
Lucke, R., Yentis, D., et al.: 1976, Ap. J. (Letters), 206, L25.Google Scholar
Maraschi, L., Treves, A. and van den Heuvel, E.P.J.: 1976, Ap.J; (in press).Google Scholar
Margon, B., Bowyer, S. and Penegor, G.: 1976, Won. Not. R. astr. Soc., 176, 217.Google Scholar
Mason, K.O., Bell Burnell, S.J. and White, N.E.: 1976a, Nature, 262, 474.Google Scholar
Mason, K.O., White, N.E., et al.: 1976, Mon. Not. R. astr. Soc, 176, 193.Google Scholar
Mauder, H.: 1974, IAU Circ., No. 2673.Google Scholar
Mauder, H.: 1976, IAU Circ., No. 2946.Google Scholar
McClintock, J.E., Rappaport, S., et al.: 1976, Ap. J. (Letters), 206, L99.Google Scholar
Middleditch, J. and Nelson, J.: 1976, Ap. J., 208, 567.Google Scholar
Petro, L., Feldman, F. and Hiltner, W.A.: 1973, Ap. J. (Letters), 184, L123.Google Scholar
Primini, F., Rappaport, S., et al.: 1976, Ap. J. (Letters) In press.Google Scholar
Rappaport, S., Joss, P.C., et al.: 1976a, Ap. J. (Letters), 208, L119.Google Scholar
Rappaport, S., Joss, P.C., and McClintock, J.E.: 1976b, Ap. J. (Letters), 206, L103.CrossRefGoogle Scholar
Robinson, E.L. and Africano, J.: 1975, IAU Circ., No. 2869.Google Scholar
Rosenberg, F.D., Eyles, C.J., et al.: 1975, Nature, 256, 628.Google Scholar
Schmidt, G.D. and Romanishin, W.: 1975, IAU Circ., No. 2873.Google Scholar
Sterne, T.E.: 1939, Mon. Not. R. astr. Soc., 99, 451.Google Scholar
Stothers, R.: 1974, Ap. J., 194, 651.Google Scholar
Swank, J.H., Becker, R.H., et al.: 1976, Ap. J. (Letters), In press.Google Scholar
Tuohy, I., and Rapley, C.G.: 1975, Ap. J. (Letters), In press.Google Scholar
Ulmer, M.P., Baity, U.A. et al.: 1972, Ap. J. (Letters), 178, L121.Google Scholar
van Paradijs, J.A., Hammerschlag-Hensberge, G., van den Heuvel, E.P.J., et al.: 1976, Goddard Symposium on X-ray Binaries, NASA SP-389, p643.Google Scholar
Vidal, N.V.: 1973, Ap. J. (Letters), 187, L81.Google Scholar
Webster, B.L., Martin, W.L., et al.: 1972, Nature, Phys. Sci., 240 . 183.Google Scholar
White, N.E., Huckle, H.E. et al.: 1976a, IAU Circ., No. 2869.Google Scholar
White, N.E., Huckle, H.E., Mason, K.O., et al.: 1976b, paper B20 of High Energy Astrophysics Division of the AAS at Cambridge, Massachusetts.Google Scholar
White, N.E., Mason, K.O., Sanford, P.W., and Murdin, P.: 1976c, Mon. Not. R. astr. Soc., 176, 201.Google Scholar
Wilson, R.E.: 1972, Ap. J. (Letters), 174, L27.Google Scholar
Wilson, R.E. and Wilson, A.T.: 1976, Ap. J., 204, 551.Google Scholar