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The Compact Nonthermal Radio Source at the Galactic Center: An Update

  • Conference paper
The Center of the Galaxy

Part of the book series: International Astronomical Union Union Astronomique Internationale ((IAUS,volume 136))

Abstract

We review the current observational status of Sgr A*, the compact nonthermal radio source at the galactic center. Sgr A* is a unique radio source at a unique location of the Galaxy. It is unlike any compact radio source associated with known stellar objects, but it is similar to extragalactic nuclear compact radio sources. The positional offset between Sgr A* and IRS16 places little constraint on the nature of the underlying energy source, since IRS16 need not be the core of the central star cluster. Sgr A* is still the best candidate for marking the location of a massive collapsed object.

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References

  1. Balick, B., and Brown, R. L., 1974, Ap. J., 194, 265.

    Article  ADS  Google Scholar 

  2. Lo, K. Y. et al, 1985, Nature, 315, 124.

    Article  ADS  Google Scholar 

  3. Lynden-Bell, D., and Rees, M. J., 1971, MNRAS, 152, 461.

    ADS  Google Scholar 

  4. Ekers, R. D., Lynden-Bell, D., 1971, Ap. Lett., 9, 189.

    ADS  Google Scholar 

  5. Downes, D., Martin, A., 1971, Nature, 233, 112.

    Article  ADS  Google Scholar 

  6. Lo, K. Y., 1987, AIP Proc. 155: Symposium honoring C. H. Townes, ed. D. C. Backer, (AIP; New York), 155, 30.

    Google Scholar 

  7. Kellerman, K. I., Shaffer, D. B., Clark, B. G., and Geldzahler, Clark B. G., 1977, Ap. J. (Lett.), 214, L61.

    Article  ADS  Google Scholar 

  8. Lo, K. Y., Cohen, M. H., Readhead, A. C. S., and Backer, D. C, 1981, Ap. J., 249, 504.

    Article  ADS  Google Scholar 

  9. Davies, R. D., Walsh, D., and Booth, R., 1976, MNRAS, 177, 319.

    ADS  Google Scholar 

  10. Marcaide, J. M., et al, 1985, Conference on Active Galactic Nuclei, (ed. Dyson, J. E.; Manchester University Press), p.53.

    Google Scholar 

  11. Zhou, J.H., Ekers, R., Goss, M., Lo, K. Y., Narayan, R., this volume.

    Google Scholar 

  12. Zylka, R., Mezger, P. G., 1988, Ast. & Ap., 190, L25.

    ADS  Google Scholar 

  13. Ozernoi, L. M., Shishov, V. I., 1977, Sov. Astron. (Lett.), 3, 233.

    ADS  Google Scholar 

  14. Rickett, B., 1986, Ap. J., 307, 564.

    Article  ADS  Google Scholar 

  15. Rickett, B., Coles, W., Bourgois, G., 1984, Ast. & Ap., 134, 390.

    ADS  Google Scholar 

  16. Romani, R., Narayan, R., Blandford, R., 1986, MNRAS, 220, 19.

    ADS  Google Scholar 

  17. Backer, D. C., Sramek, R., 1982, Ap. J., 260, 512.

    Article  ADS  Google Scholar 

  18. Backer, D.C., Sramek, R., 1987, AIP Proc. 155: Symposium honoring C.H. Townes, ed. D. C. Backer, (AIP; New York), 155, 163.

    Google Scholar 

  19. Cordes, J., Ananthakrishnan, S., and Dennison, B., 1984, Nature, 309, 689.

    Article  ADS  Google Scholar 

  20. Reynolds, S., McKee, C, 1980, Ap. J., 239, 893.

    Article  ADS  Google Scholar 

  21. Engelke, C, 1988, Ap. J., 325, 153.

    Article  ADS  Google Scholar 

  22. Gusten, R., et al., 1987, Ap. J., 318, 124.

    Article  ADS  Google Scholar 

  23. Bartel, N. et al, 1982, Ap. J., 262, 556.

    Article  ADS  Google Scholar 

  24. Bash, F., Kaufman, M., 1986, Ap. J., 310, 621.

    Article  ADS  Google Scholar 

  25. Kellermann, K., Pauliny-Toth, I., 1981, Ann. Rev. Ast. & Ap., 19, 373.

    Article  ADS  Google Scholar 

  26. Begelman, M., Blandford, R., Rees, M., 1984, Rev, for Mod. Phvs., 56, 255.

    Article  ADS  Google Scholar 

  27. Rees, M., Begelman, M., Blandford, R., Phinney, E., 1982, Nature, 295, 17.

    Article  ADS  Google Scholar 

  28. Rees, M., 1987, AIP Proc. 155: Symposium honoring C. H. Townes, ed. D.C. Backer, (AIP; New York), 155, 71.

    Google Scholar 

  29. Forrest, W., Shure, M., Pipher, J., Woodward, C., 1987, AIP Proc. 155: Symposium honoring C. H. Townes, ed. D. C. Backer, (AIP; New York), 155, 153.

    Google Scholar 

  30. Gurzadyan, V. G., Ozernoi, L. M., 1980, Ast. & Ap, 86, 315.

    MathSciNet  ADS  Google Scholar 

  31. Ozernoi, L. M., 1987, AIP Proc. 155: Symposium honoring C. H. Townes, ed. D. C. Backer, (AIP; New York), 155, 181.

    Google Scholar 

  32. Allen, D. A., 1987, AIP Proc. 155: Symposium honoring C. H. Townes, ed. D. C. Backer, (AIP; New York), 155, 1.

    Google Scholar 

  33. Hall, D. N. B., Kleinman, S. G., and Scoville, N. Z., 1982, Ap.J.(Lett.), 262, L53.

    Article  ADS  Google Scholar 

  34. Allen, D. A., this volume.

    Google Scholar 

  35. Ramaty, R., and Lingenfelter, R. E., 1983, Highlights of Astronomy, 6, 525.

    ADS  Google Scholar 

  36. Blandford, R. D., 1982, AIP Conf. Proc. 83, ed. G. Riegler, R. Blandford, (AIP; New York), 177.

    Chapter  Google Scholar 

  37. Serabyn, G., Lacy, J., 1985, Ap. J., 293, 445.

    Article  ADS  Google Scholar 

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© 1989 IAU

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Lo, K.Y. (1989). The Compact Nonthermal Radio Source at the Galactic Center: An Update. In: Morris, M. (eds) The Center of the Galaxy. International Astronomical Union Union Astronomique Internationale, vol 136. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2362-1_76

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  • DOI: https://doi.org/10.1007/978-94-009-2362-1_76

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-0-7923-0222-3

  • Online ISBN: 978-94-009-2362-1

  • eBook Packages: Springer Book Archive

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