Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-14T08:20:47.080Z Has data issue: false hasContentIssue false
  • English
  • Français

Neutron Stars in Globular Clusters

Published online by Cambridge University Press:  01 September 2007

N. Ivanova ,
C. O. Heinke  and
F. Rasio
N. Ivanova
Affiliation:
CITA, University of Toronto, 60 St George St, Toronto, ON M5R 2N6, Canada email: nata@cita.utoronto.ca
C. O. Heinke
Affiliation:
Department of Astronomy, University of Virginia, 530 McCormick Road Charlottesville, VA 22904-4325, USA email: cheinke@virginia.edu Physics and Astronomy Department, Northwestern University, 2145 Sheridan Rd, Evanston, IL 60208USA email: rasio@northwestern.edu
F. Rasio
Affiliation:
Physics and Astronomy Department, Northwestern University, 2145 Sheridan Rd, Evanston, IL 60208USA email: rasio@northwestern.edu
Rights & Permissions [Opens in a new window]

Abstract

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.

Dynamical interactions that occur between objects in dense stellar systems are particularly important for the question of formation of X-ray binaries. We present results of numerical simulations of 70 globular clusters with different dynamical properties and a total stellar mass of 2×107M⊙. We find that in order to retain enough neutron stars to match observations we must assume that NSs can be formed via electron-capture supernovae. Our simulations explain the observed dependence of the number of LMXBs on “collision number” as well as the large scatter observed between different globular clusters. For millisecond pulsars, we obtain good agreement between our models and the numbers and characteristics of observed pulsars in the clusters Terzan 5 and 47 Tuc.

Keywords

binaries: closeglobular clusters: generalX-rays: binaries
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S246: Dynamical Evolution of Dense Stellar Systems , September 2007 , pp. 316 - 320
Copyright
Copyright © International Astronomical Union 2008

References

Arzoumanian, Z., Chernoff, D. F., & Cordes, J. M. 2002, ApJ, 568, 289CrossRefGoogle Scholar
Bhattacharya, D. & van den Heuvel, E.P.J. 1991, Phys. Rep., 203, 1CrossRefGoogle Scholar
Camilo, F., Lorimer, D. R., Freire, P., Lyne, A. G. & Manchester, R. N. 2000, ApJ, 535, 975CrossRefGoogle Scholar
Clark, G. W. 1975, ApJL, 199, L143CrossRefGoogle Scholar
Heinke, C O., Grindlay, J. E., Lugger, P. M., Cohn, H. N., Edmonds, P. D., Lloyd, D. A. & Cool, A. M., 2003, ApJ, 598, 501CrossRefGoogle Scholar
Hobbs, G., Lorimer, D. R., Lyne, A. G. & Kramer, M, 2005, MNRAS, 360, 974CrossRefGoogle Scholar
Hut, P. 2006, astro-ph/0610232Google Scholar
Ivanova, N., Belczynski, K., Fregeau, J. M. & Rasio, F. A., 2005, MNRAS, 358, 572CrossRefGoogle Scholar
Ivanova, N., Heinke, C. O., Rasio, F. A., Taam, R E., Belczynski, K. & Fregeau, J. 2007, MNRAS, submittedGoogle Scholar
Kuranov, A. G. & Postnov, K. A. 2006, Astron. Lett., 32, 393CrossRefGoogle Scholar
Lamb, F. & Yu, W. 2005, Binary Radio Pulsars, 328, 299Google Scholar
Lombardi, J. C., Proulx, Z. F., Dooley, K. L., Theriault, E. M., Ivanova, N. & Rasio, F. A. 2006, ApJ, 640, 441CrossRefGoogle Scholar
Pooley, D. & Hut, P. 2006, ApJL, 646, L143CrossRefGoogle Scholar
Ransom, S. M., Hessels, J. W. T., Stairs, I. H., Freire, P. C. C., Camilo, F., Kaspi, V. M. & Kaplan, D. L. 2005, Science, 307, 892CrossRefGoogle Scholar
Stairs, I. H., et al. 2006, BAAS, 38, 1118Google Scholar
Verbunt, F. & Hut, P. 1987, in IAUS 125, The Origin & Evolution of Neutron Stars, p. 125CrossRefGoogle Scholar