Hostname: page-component-84b7d79bbc-5lx2p Total loading time: 0 Render date: 2024-07-27T23:23:27.324Z Has data issue: false hasContentIssue false
  • English
  • Français

Continuum Radio Emission and Galactic Structure

Published online by Cambridge University Press:  14 August 2015

R. M. Price
R. M. Price*
Affiliation:
Dept. of Physics and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Mass., U.S.A.

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Recent studies of high latitude brightness have shown that in several regions a significant proportion of it is due to loop features. The largest of these are now thought to be local (within a few hundred parsecs) and perhaps to be due to supernova events.

Aperture synthesis maps of 45 external spiral galaxies have shown large-scale continuum nonthermal features in the disks of some and, in general, an absence of spherical halos around the galaxies. This supports the view that the radio emission from our Galaxy can best be described as coming from a thick disk. Any large-scale spherical component could not have a volume emissivity greater than 1.5% of the average volume emissivity of the disk at meter wavelengths.

A comparison of the disk radiation with new disk models suggests that the galactic plane radiation has two components: a base disk and a spiral component. Each of these contributes ~50% of the total power output of the disk at 150 MHz.

Type
Part 6: Large-Scale Galactic Structure
Information
Symposium - International Astronomical Union , Volume 60: Galactic Radio Astronomy , 1974 , pp. 637 - 648
Copyright
Copyright © Reidel 1974 

References

Altenhoff, W. J.: 1968, in Terzian, Y. (ed.), Interstellar Ionized Hydrogen, Benjamin, New York, p. 519.Google Scholar
Altenhoff, W. J., Downes, D., Goad, L., Maxwell, A., and Rinehart, R.: 1970, Astron. Astrophys. Suppl. 1, 319.Google Scholar
Baldwin, J. E.: 1967, in van Woerden, H. (ed.), ‘Radio Astronomy and the Galactic System’, IAU Symp, 31, 337.Google Scholar
Beard, M. and Kerr, F. J.: 1969, Australian J. Phys. 22, 121.Google Scholar
Berkhuijsen, E. M.: 1971, Astron. Astrophys. 14, 359.Google Scholar
Berkhuijsen, E. M.: 1972, Astron. Astrophys. Suppl. 5, 263.Google Scholar
Berkhuijsen, E. M.: 1973, Astron. Astrophys. 24, 143.Google Scholar
Berkhuijsen, E. M., Haslam, C. G. T., and Salter, C. J.: 1970, Nature 225, 364.Google Scholar
Berkhuijsen, E. M., Haslam, C. G. T., and Salter, C. J.: 1971, Astron. Astrophys. 14, 252.Google Scholar
Bingham, R. G.: 1967, Monthly Notices Roy. Astron. Soc. 137, 157.CrossRefGoogle Scholar
Brandt, J. C. and Maran, S. P.: 1972, Nature 235, 38.Google Scholar
Bunner, A. N., Coleman, P. L., Kraushaar, W. L., and McCammon, D.: 1972, Astrophys. J. Letters 172, L67.Google Scholar
Burbidge, E. M.: 1967, in van Woerden, H. (ed.), ‘Radio Astronomy and the Galactic System’, IAU Symp. 31, 209.Google Scholar
Burke, B. F.: 1968, in Terzian, Y. (ed.), Interstellar Ionized Hydrogen, Benjamin, New York. p. 541.Google Scholar
Cameron, M. J.: 1971, Monthly Notices Roy. Astron. Soc. 152, 439.Google Scholar
Clark, D. H., Caswell, J. L., and Green, A. J.: 1973, Nature 246, 28.Google Scholar
Day, G. A., Warne, W. G., and Cooke, D. J.: 1970, Australian J. Phys. Astrophys. Suppl., No. 13, 11.Google Scholar
Day, G. A., Caswell, J. L., and Cooke, D. J.: 1972, Australian J. Phys. Astrophys. Suppl., No. 25.Google Scholar
Downes, D.: 1971, Astronom. J. 76, 305.Google Scholar
Elliott, K. H.: 1970, Nature 226, 1236.Google Scholar
Elliott, K. H. and Meaburn, J.: 1970, Astrophys. Space Sci. 7, 252.CrossRefGoogle Scholar
Fejes, I.: 1971, Astron. Astrophys. 15, 419.Google Scholar
Fejes, I. and Verschuur, G. L.: 1973, Astron. Astrophys. 25, 85.Google Scholar
Felli, M. and Churchwell, E.: 1972, Astron. Astrophys. Suppl. 5, 309.Google Scholar
Gebel, W. L. and Shore, S. N.: 1972, Astrophys. J. Letters 172, L9.Google Scholar
Goss, W. M. and Day, G. A.: 1970, Australian J. Phys. Astrophys. Suppl. No. 13, 3.Google Scholar
Goss, W. M. and Shaver, P. A.: 1970, Australian J. Phys. Astrophys. Suppl. No. 14, 1.Google Scholar
Green, A. J.: 1972, Ph.D. Thesis, University of Sydney, Australia.Google Scholar
Haslam, C. G. T., Kahn, F. D., and Meaburn, J.: 1971, Astron. Astrophys. 12, 388.Google Scholar
Hill, E. R.: 1968, Australian J. Phys. 21, 735.Google Scholar
Holden, D. J.: 1969, Monthly Notices Roy. Astron. Soc. 145, 67.CrossRefGoogle Scholar
Hughes, M. P., Thompson, A. R., and Colvin, R. S.: 1971, Astrophys. J. Suppl. 23, 323.Google Scholar
Iloviasky, S. A. and Lequeux, J.: 1972a, Astron. Astrophys. 19, I69.Google Scholar
Iloviasky, S. A. and Lequeux, J.: 1972b, Astron. Astrophys. 20, 347.Google Scholar
Kafatos, M. C. and Morrison, P.: 1973, Astron. Astrophys. 26, 71.Google Scholar
Komesaroff, M. M.: 1965, Australian J. Phys. 19, 75.Google Scholar
Kruit, P. C. van der: 1971, Astron. Astrophys. 15, 110.Google Scholar
Kruit, P. C. van der: 1973a, Bull. Am. Astron. Soc. 5, 30.Google Scholar
Kruit, P. C. van der: 1973b, Nature Phys. Sci. 243, 127.CrossRefGoogle Scholar
Kruit, P. C. van der, Oort, J. H., and Mathewson, D. S.: 1972, Astron. Astrophys. 21, 169.Google Scholar
Landecker, T. L. and Wielebinski, R.: 1970, Australian J. Phys. Astrophys. Suppl. No. 16.Google Scholar
Large, M. I., Quigley, M. J. S., and Haslam, C. G. T.: 1966, Monthly Notices Roy. Astron. Soc. 131, 335.CrossRefGoogle Scholar
Lequeux, J.: 1971, Astron. Astrophys. 15, 42.Google Scholar
Lin, C. C. and Shu, F. G.: 1967, in van Woerden, H. (ed.), ‘Radio Astronomy and the Galactic System’, IAU Symp. 31, 313.Google Scholar
Manchester, R. N.: 1972, Astrophys. J. 172, 43.CrossRefGoogle Scholar
Mathewson, D. S.: 1968, Astrophys. J. Letters 153, L47.CrossRefGoogle Scholar
Mathewson, D. S., Healey, J. R., and Rome, J. M.: 1962, Australian J. Phys. 15, 369.Google Scholar
Mathewson, D. S., Kruit, P. C. van der, and Brouw, W. N.: 1972, Astron. Astrophys. 17, 468.Google Scholar
Meaburn, J.: 1965, Nature 208, 575.CrossRefGoogle Scholar
Meaburn, J.: 1967, Z. Astrophys. 65, 93.Google Scholar
Merkelijn, J. K. and Davis, M. M.: 1967, Bull. Astron. Inst. Neth. 19, 246.Google Scholar
Mills, B. Y.: 1959, in Bracewell, R. N. (ed.), ‘Paris Symposium on Radio Astronomy’, IAU Symp. 9, 431.Google Scholar
Milne, D. K.: 1970, Australian J. Phys. 23, 425.Google Scholar
Morgan, W., Hiltner, W., Neff, J., Garrison, R., and Osterbrock, D.: 1965, Astrophys. J. 142, 974.Google Scholar
Parker, E. N.: 1965, Astrophys. J. 142, 584.CrossRefGoogle Scholar
Pooley, G. G.: 1969a, Monthly Notices Roy. Astron. Soc. 144, 101.Google Scholar
Pooley, G. G.: 1969b, Monthly Notices Roy. Astron. Soc. 144, 143.Google Scholar
Price, R. M.: 1974, Astron. Astrophys. 33, 33.Google Scholar
Quigley, M. J. S. and Haslam, C. G. T.: 1965, Nature 208, 741.CrossRefGoogle Scholar
Reifenstein, E. C. III, Wilson, T. L., Burke, B. F., Mezger, P. G., and Altenhoff, W. J.: 1970, Astron. Astrophys. 4, 357.Google Scholar
Roberts, W. W.: 1969, Astrophys. J. 158, 123.Google Scholar
Seeger, C. L., Westerhout, G., Conway, R. G., and Hoekema, T.: 1965, Bull. Astron. Inst. Neth. 18, 11.Google Scholar
Sinclair, M. W. and Kerr, F. J.: 1971, Australian J. Phys. 24, 769.Google Scholar
Spoelstra, T. A. Th.: 1972, Astron. Astrophys. 21, 61.Google Scholar
Spoelstra, T. A. Th.: 1973, Astron. Astrophys. 24, 149.Google Scholar
Wielebinski, R., Smith, D. H., and Garzon Cardenas, X.: 1968, Australian J. Phys. 21, 185.CrossRefGoogle Scholar
Yates, K. W.: 1968, Australian J. Phys. 21, 147.Google Scholar