Radio spectra of OH471 and OQ172

Article metrics

Abstract

RADIO spectra for the highly redshifted z ≥ 3.40 quasars OH471 (ref. 1) and OQ172 (ref. 2) are presented here for frequencies between 16.7 MHz and 85.3 GHz. The spectra are complex. Both have a peak at or near 1.4 GHz and a second peak near or above 85 GHz. Both have a low frequency cutoff, the one for OH471 being especially sharp. OH471 sometimes seems to be variable at 31 GHz on a time scale of days but the source appears to be stable at 10.7 and 22 GHz.

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

    Carswell, R. F., and Strittmatter, P. A., Nature, 242, 394 (1973).

  2. 2

    Wampler, E. J., Robinson, L. B., Baldwin, J. A., Burbidge, E. M., Nature, 242, 137 (1973).

  3. 3

    Wills, B. J., Astrophys. J., 180, 335 (1973).

  4. 4

    Kellerman, K. I., Pauliny-Toth, I. I. K., and Williams, P. J. S., Astrophys. J., 157, 1 (1969).

  5. 5

    Bridle, A. H., Davis, M. M., Fomalont, F. B., and Lequeux, J., Astr. J., 77, 405 (1972).

  6. 6

    Conklin, E. K., Andrew, B. H., Wills, B. J., and Kraus, J. D., Astrophys. J., 177, 303 (1972).

  7. 7

    Fitch, L. T., Dixon, R. S., and Kraus, J. D., Astr. J., 74, 612 (1969).

  8. 8

    Ghigo, F. D., and Owen, F. N., Astr. J., 78, 848 (1973).

  9. 9

    Andrew, B. H., Medd, W. J., Harvey, G. A., and Locke, J. L., Nature, 236, 445 (1972).

  10. 10

    Kraus, J. D., Gearhart, M. R., and Ehman, J. R., Nature, 243, 94 (1973).

  11. 11

    Brundage, R. K., Dixon, R. S., Ehman, J. R., and Kraus, J. D., Astr. J., 76, 777 (1972).

  12. 12

    Wills, B. J., Kraus, J. D., and Andrew, B. H., Astrophys. J. Lett., 169, L87 (1971).

  13. 13

    Jauncey, D. L., Niell, A. E., and Condon, J. J., Astrophys J. Lett., 160, L31 (1970).

  14. 14

    Hoskins, D. J., Murdoch, H. S., Hazard, C., and Jauncey, D. L., Aust. J. Phys., 25, 559 (1972).

  15. 15

    Ross, H. N., thesis, Univ. Toronto (1972).

  16. 16

    Kraus, J. D., and Andrew, B. H., Astrophys. J. Lett., 159, L41 (1970).

  17. 17

    Witzel, A., Véron, P., and Véron, M. P., Astr. Astrophys, 11, 171 (1971).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

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.