Abstract
The six or eight optically identified X-ray sources comprise starlike objects and extended supernova remnants in the Galaxy, well as as a radio galaxy and a quasar. Both X-ray and radiofrequency radiation penetrate the entire galactic plane, but only two or three galactic radio sources have nbeen identified with X-ray sources. This has led Hayakawa et al. (1) to postulate that detectable X-ray sources are not farther than 1 kpc. However, other studies suggest that there is a cluster of a few intrinsically bright sources actually near the galactic nucleus and a scattering of weaker sources near the sun (2, 3).
Keywords
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Hayakawa, S., Matsuoka, M., Yamashita, K. (1966) in Space Research, Spartan Books, Washington, 6, 68.
Johnson, H.M. (1966) Astrophys. J., 143, 261
Johnson, H.M. (1967) Astron. J., 72, 806.
Morrison, P., Sartori, L. (1965) Phys. Rev. Letters, 14, 771.
Sartori, L., Morrison, P. (1967) Astrophys. J., 150, 385.
Scargle, J.D. (1967) Astron. J., 72, 826.
Sandage, A.R., Osmer, P., Giacconi, R., Gorenstein, P., Gursky, H., Waters, J., Bradt, H., Garmire, G., Sreekantan, B.V., Oda, M., Osawa, K., Jugaku, J. (1966) Astrophys. J., 146, 316.
Giacconi, R., Gorenstein, P., Gursky, H., Usher, P.D., Waters, J.R., Sandage, A., Osmer, P., Peach, J. V. (1967) Astrophys. J., 148, L129.
Shklovsky, I.S. (1964) Astr. Cirk. (Kazan), No. 298
Shklovsky, I.S. (1965) Astr. Zu., 42, 287.
Johnson, H.M. (1966) Astrophys. J., 144, 635
Johnson, H.M. (1966) Proc. 4th ‘Texas’ Symposium on Relativistic Astrophysics, Gordon and Breach, New York (in press).
Wallerstein, G. (1967) Astrophys. Letters, 1, 31.
Johnson, H. M., Stephenson, C.B. (1966) Astrophys. J., 146, 602.
Luyten, W.J. (1966) I.A.U. Circ., No. 1980.
McGee, R.X., Murray, J.D. (1961) Australian J. Phys., 14, 260.
Bell, K.L., Kingston, A.E. (1967) M.N., 136, 241.
Hidajat, B., The, P.-S. (1967) Pub. A.S.P., 79, 260.
Mumford, G.S. (1966) Astrophys. J., 146, 962.
Hardie, R.H. (1967) Pub. A.S.P., 79, 173.
Mook, D.E. (1967) Astrophys. J., 150, L25.
Lawrence, G.M., Ostriker, J.P., Hesser, J.E. (1967) Astrophys. J., 148, L161.
Hiltner, W. A., Mook, D.E., Ludden, D. J., Graham, D. (1967) Astrophys. J., 148, L47.
Ichimura, K., Ishida, G., Jugaku, J., Oda, M., Osawa, K., Shimuzu, M. (1966) Pub. Astr. Soc. Japan, 18, 469.
Code, A.D. Unpublished.
Johnson, H.M., Spinrad, H., Taylor, B. J., Peimbert, M. (1967) Astrophys. J., 149, L45.
Low, F.J. Unpublished.
Yokoi, H., Sato, T., Morimoto, M. (1966) Pub. Astr. Soc. Japan, 18, 472.
Kellermann, K.J., Pauliny-Toth, I. Unpublished.
Minkowski, R., Johnson, H.M. (1967) Astrophys. J., 148, 659.
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1968 I.A.U.
About this chapter
Cite this chapter
Johnson, H.M. (1968). Optical and Radio Information. In: Perek, L. (eds) Highlights of Astronomy. International Astronomical Union / Union Astronomique Internationale, vol 1. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-3417-3_19
Download citation
DOI: https://doi.org/10.1007/978-94-010-3417-3_19
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-3419-7
Online ISBN: 978-94-010-3417-3
eBook Packages: Springer Book Archive