Letter | Published:

Geomagnetic effect associated with X-ray flare from Sco X-1

Naturevolume 257pages3536 (1975) | Download Citation

Subjects

Abstract

THE effect on the night-time lower ionosphere of X radiation from celestial sources is a topic of some controversy1–4. An X-ray flare from Sco X-1 has been shown to have a daytime effect on the ionosphere5 and it has also been reported6 that celestial X-ray sources have a nocturnal effect on the lower ionosphere in certain conditions. Galactic X-ray ionisation has been shown7–9 to affect night-time geomagnetic field components.

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

    Edwards, P. J., Burtt, G. J., and Know, F., Nature, 222, 1053–1054 (1969).

  2. 2

    Ananthakrishnan, S., and Ramanathan, K. R., Nature, 223, 488–489 (1969).

  3. 3

    Chilton, C. J., and Crary, J. H., Radio Sci., 6, 699–708 (1971).

  4. 4

    Burgess, B., and Jones, T. B., Nature, 224, 680–681 (1969).

  5. 5

    Ramanamurthy, Y. V., Mitra, A. P., and Jain, V. C., J. atmos. terr. Phys., 32, 1721–1726 (1970).

  6. 6

    Mitra, A. P., and Ramanamurthy, Y. V., Radio Sci., 7, 67–72 (1972).

  7. 7

    Campbell, W. H., Matsushita, S., and Bunder, B. K., Radio Sci., 6, 165–170 (1971).

  8. 8

    Campbell, W. H., Planet. Space. Sci., 20, 61–71 (1972).

  9. 9

    Murthy, A. V. S., and Yacob, A., Planet. Space. Sci., 22, 1583–1584 (1974).

  10. 10

    Lewin, W. H. G., Clark, G. W., and Smith, W. B., Astrophys. J. Lett., 152, L55–61 (1968).

  11. 11

    Sastri, H. J., and Murthy, B. S., Solar Phys. (in the press).

  12. 12

    Volland, H., and Taubenheim, J., J. atmos. terr. Phys., 12, 258 (1958).

  13. 13

    Veldkamps, J., and Van Sabben, D., J. atmos. terr. Phys., 18, 192 (1960).

  14. 14

    Pinter, S., Bull. astr. Insts Col., 18, 274–281 (1967).

Download references

Author information

Affiliations

  1. Indian Institute of Astrophysics, Kodaikanal, 624103, India

    • J. HANUMATH SASTRI
    •  & B. SURYANARAYANA MURTHY

Authors

  1. Search for J. HANUMATH SASTRI in:

  2. Search for B. SURYANARAYANA MURTHY in:

About this article

Publication history

Received

Accepted

Issue Date

DOI

https://doi.org/10.1038/257035a0

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.