Astrophysics and Space Science

, Volume 62, Issue 2, pp 439–449 | Cite as

Observations of pulsating X-ray binaries 4U0900-40 and 4U1223-62

  • W. H. -M. Ku
  • R. S. Wolff


A rocket observation of two pulsating X-ray binaries, 4U0900-40 and 4U1223-62, found no evidence for periodic or quasiperiodic behavior on time scales down to 2 ms. Evidence for complex high-energy spectral features and intrapulse variability is presented for 4U0900-40.


Spectral Feature Rocket Observation Quasiperiodic Behavior 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Becker, R. H., Rothschild, R. E., Boldt, E. A., Holt, S. S., Pravdo, S. H., Serlemitsos, P. J. and Swank, J. H.: 1978,Astrophys. J. 221, 912.Google Scholar
  2. Bord, D. J., Mook, D. E., Petro, L. and Hiltner, W. A.: 1976,Astrophys. J. 203, 689.Google Scholar
  3. Brecher, K.: 1975,Nature 257, 203.Google Scholar
  4. Charles, P. A., Mason, K. O., White, N. E., Culhane, J. L., Sanford, P. W. and Moffat, A. F. J.: 1978,Monthly Notices Roy. Astron. Soc. 183, 813.Google Scholar
  5. Coe, M. J., Engel, A. R. and Overby, J. J.: 1976Monthly Notices Roy. Astron. Soc. 177, 31P.Google Scholar
  6. Eadie, G., Peacock, A., Pounds, K. A. and Watson, M.: 1975,Monthly Notices Roy. Astron. Soc. 172, 35P.Google Scholar
  7. Forman, W., Jones, C., Tananbaum, H., Gursky, H., Kellogg, F. and Giacconi, R.: 1973,Astrophys. J. (Letters) 182, L103.Google Scholar
  8. Forman, W., Jones, C., Cominsky, L., Julien, P., Murray, S., Peters, G., Tananbaum, H. and Giacconi, R.: 1977, preprint submitted toAstrophys. J. Supp. Google Scholar
  9. Hammerschlag-Hensberge, G., Zuiderwijk, E. J. and van den Heuvel, E. P. J.: 1976,Astron. Astrophys. 49, 321.Google Scholar
  10. Jones, C.: 1977,Astrophys. J. 214, 856.Google Scholar
  11. Mauder, H.: 1974,IAU Circ., No. 2673.Google Scholar
  12. McClintock, J. E., Rappaport, s., Joss, P. C., Bradt, H., Buff, J., Clark, G. W., Hearn, D., Lewin, W. H. G., Matilsky, T., Mayer, W. and Primini, F.: 1976,Astrophys. J. 206, L99.Google Scholar
  13. Pravdo, S. H.: 1978, Paper presented at COSPAR-IAU Symposium on X-Ray Astronomy of Twenty-First Plenary Meeting of COSPAR, Innsbruck, Austria, 1–3 June.Google Scholar
  14. Rappaport, S., Jessen, J. and Hoffman, J.: 1977, private communication.Google Scholar
  15. Rappaport, S. and Joss, P. C.: 1977a,Nature 266, 123.Google Scholar
  16. Rappaport, S. and Joss, P. C.: 1977a,Nature 266, 123.Google Scholar
  17. Rappaport, S. and Joss, P. C.: 1977b,Nature,266, 683.Google Scholar
  18. Rappaport, S., Joss, P. C. and McClintock, J. E.: 1976,Astrophys. J. 206, L103.Google Scholar
  19. Ricker, G. R., Gerassimenko, M., McClintock, J. E., Rykman, S. G. and Lewin, W. H. G.: 1976,Astrophys. J. 207, 333.Google Scholar
  20. Ricker, G. R., McClintock, J. E., Gerassimenko, M. and Lewin, W. H. G.: 1973,Astrophys. J. 184, 237.Google Scholar
  21. Rothschild, R. E., Boldt, E. A., Holt, S. S. and Serlemitsos, P. J.: 1974,Astrophys. J. 190, L113.Google Scholar
  22. Swank, J. H.: 1977, private communication.Google Scholar
  23. Swank, J. H., Becker, R. H., Boldt, E. A., Holt, S. S., Pravdo, S. H., Rothschild, R. E. and Serlemitsos, P. J.: 1976,Astrophys. J. 209, L57.Google Scholar
  24. Toor, A.: 1977,Astrophys. J. 215, L57.Google Scholar
  25. Ulmer, M. P., Baity, W. A., Wheaton, W. A. and Peterson, L. E.: 1972,Astrophys. J. 178, L121.Google Scholar
  26. Watson, M. G. and Griffith, R. E.: 1977,Monthly Notices Roy. Astron. Soc. 178, 513.Google Scholar
  27. Weisskopf, M. C., Kahn, S. M. and Sutherland, P. G.: 1975,Astrophys. J. 199, L147.Google Scholar
  28. Weisskopf, M. C. and Sutherland, P. G.: 1978,Astrophys. J. 221, 228.Google Scholar
  29. White, N. E., Mason, K. O., Huckle, H. E., Charles, P. A. and Sanford, P. W.: 1976,Astrophys. J. 209, L119.Google Scholar

Copyright information

© D. Reidel Publishing Co 1979

Authors and Affiliations

  • W. H. -M. Ku
    • 1
  • R. S. Wolff
    • 1
  1. 1.Columbia Astrophysics Laboratory, Departments of Astronomy and PhysicsColumbia UniversityNew YorkUSA

Personalised recommendations