Letter | Published:

Gamma-ray emission from millisecond pulsars in globular clusters

Naturevolume 352pages695697 (1991) | Download Citation

Subjects

Abstract

RECENT observations indicate that a typical globular cluster may contain hundreds of millisecond pulsars1,2. Because millisecond pulsars have some similarities to the Vela pulsar, which is known to be a source of γ-rays, they could also be gamma emitters of modest power. Here I estimate the γ-ray luminosity of globular clusters, assuming that they indeed harbour large numbers of millisecond pulsars. An upper limit obtained by the Cos-B satellite on the γ-ray emission from 47 Tucanae, which contains at least 10 millisecond pulsars1, is too large to constrain the model presented here, but the estimated luminosities are high enough to be detectable by the recently launched Gamma Ray Observatory. In the near future, γ-ray observations will thus be able to test this model, and the theory of γ-ray emission by millisecond pulsars.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1

    Manchester, R. N. et al. Nature 352, 219–221 (1991).

  2. 2

    Kulkarni, S. R. Bull. Am. astr. Soc. 22, 1308 (1990).

  3. 3

    Halpern, J. P. & Tytler, D. Astrophys. J. 330, 201–217 (1988).

  4. 4

    Halpern, J. P., Grindlay, J. & Tytler, D. Astrophys. J. 296, 190–196 (1985).

  5. 5

    Ruderman, M. & Cheng, K. S. Astrophys. J. 335, 306–318 (1988).

  6. 6

    Ruderman, M., Shaham, J. & Tavani, M. Astrophys. J. 336, 507–518 (1989).

  7. 7

    Ruderman, M., Shaham, J., Tavani, M. & Eichler, D. Astrophys. J. 343, 292–312 (1989).

  8. 8

    Kluźniak, W., Ruderman, M., Shaham, J. & Tavani, M. Nature 339, 742–743 (1988).

  9. 9

    Bhattacharya, D. & Srinivasan, G. J. Astr. Astrophys. 12, 17–25 (1991).

  10. 10

    Grindlay, J. E., Covault, C. E. & Manandhar, R. P. Bull Am. astr. Soc. 22, 1286 (1990).

  11. 11

    Cheng, K. S., Ho, C. & Ruderman, M. Astrophys. J. 300, 500–521 (1986); Astrophys. J. 300, 522–539 (1986).

  12. 12

    White, N. & Stella, L. Mon. Not. R. astr. Soc. 321, 325–331 (1988); Nature 332, 416–417 (1988).

  13. 13

    Harding, A. K., Tademaru, E. & Esposito, L. Astrophys. J. 225, 226–237 (1978).

  14. 14

    Harding, A. K. Astrophys. J. 247, 639–649 (1981).

  15. 15

    Bignami, G. F. & Hermsen, W. Ann. Rev. astr. Astrophys. 21, 67–108 (1983).

Download references

Author information

Affiliations

  1. Institute for Theoretical Physics, University of California, Santa Barbara, California, 93106, USA

    • Kaiyou Chen

Authors

  1. Search for Kaiyou Chen in:

About this article

Publication history

Received

Accepted

Issue Date

DOI

https://doi.org/10.1038/352695a0

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.