Abstract
A CURIOUS correlation (Fig. 1) has been found between the systematic variations in the astronomical unit, as derived from radar observations of Venus at 440 Mc/s (68 cm)1, and the solar 20-cm flux as measured at the Heinrich Hertz Institut in Berlin-Adlers-hof2. The 20-cm flux is known to be a good indicator of solar activity, and there is evidence that solar decimetre radiation (slowly varying component) is related to both the solar extreme ultra-violet flux and the solar wind intensity3,4.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Pettengill, G. H., Briscoe, H. W., Evans, J. V., Gehrels, E., Hyde, G. M., Kraft, L. G., Price, R., and Smith, W. B., Astro. J., 67, 181 (1962).
Hachenberg, O., and Dittmar, W., Beobachtungsergebnisse: Radio-frequenzstrahlung der Sonne (Heinrich-Hertz-Institut, Berlin-Adlershof, 1961).
Harris, I., and Priester, W., NASA Tech. Note D-1443 (1962).
Harris, I., and Priester, W., NASA Tech. Note D-1444 (1962).
Bridge, H. S., Bonetti, A., Lazarus, A., Lyon, E., Rossi, B., and Scherb, F., Space Research III, edit. by Priester, W. (North-Holland Pub. Co., Amsterdam) (in the press).
Blackwell, D. E., and Ingham, M., Mon. Not. Roy. Astro. Soc., 122, 129 (1961).
Muhleman, D. O., Holdridge, D. B., and Block, N., Astro. J., 67, 191 (1962).
Victor, W. K., and Stevens, R., Space Research III, edit. by Priester, W. (North-Holland Pub. Co., Amsterdam) (in the press).
Kuzmin, A. D., and Salomonovich, A. E., Space Research III, edit. by Priester, W. (North-Holland Pub. Co., Amsterdam) (in the press).
Mayer, C. H., Space Research III, edit. by Priester, W. (North Holland Pub. Co., Amsterdam) (in the press).
Drake, F. D., Pub. NRAO, 1, No. 11, 165 (1962).
Wildt, R., Astrophys. J., 91, 266 (1940).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
PRIESTER, W., ROEMER, M. & SCHMIDT-KALER, T. Apparent Relation between Solar Activity and the 440-Mc/s Radar Distance of Venus. Nature 196, 464–465 (1962). https://doi.org/10.1038/196464a0
Issue Date:
DOI: https://doi.org/10.1038/196464a0
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.
