Abstract
A plausible scenario for the formation of a stable supermassive star in the relativistic regime has been discussed. The onset of the negativity of the `distribution function' in the stable sequences of the star clusters [the stability of star clusters is assured by using the variational method (Chandrasekhar, 1964a,b) for equivalent gas spheres] described by Tolman's type VII solution with vanishing surface density has been regarded as an indication of the conversion of the cluster structure into a supermassive star. For the critical values of the `adiabatic index', (4/3) < γcrit ≤ (5/3) (forwhich a supermassive star represent neutrally stable system), the mass, and the size of this object comes out to be 6.87 × 107 M⊙ ≤M ≤ 1.7 × 109M⊙, and 2.74× 1014 cm ≤ a≤ 1.43× 1015cm respectively, for the central temperature,T0 = 6× 107°K, which is sufficient for the release ofnuclear energy. The total energy released during their evolution rangesfrom 2.46× 1060 - 3.18× 1062 erg, which is sufficient to power these objects at least for a period of ∼ 106 - 107years. These figures agrees quite well with those cited for Quasi Stellar Objects (QSOs) in the literature.
Similar content being viewed by others
References
Antonov, V.A.: 1962, Vest. Leningrad Univ. 7, 135.
Antonov, V.A.: 1971, Trudy Astron. Obs. Leningrad Gos. Univ. 28, 64.
Bisnovatyi-Kogan, G.S.: 1998, Astrophys. J. 497, 559.
Bisnovatyi-Kogan, G.S., Merafina, M., Ruffini, R. and Vesperini, E.: 1993, Astrophys. J. 414, 187.
Bisnovatyi-Kogan, G.S. and Zeldovich, Ya.B.: 1969, Astrofizika 5, 223.
Bondi, H.: 1964, Proc. Roy. Soc. A 282, 303.
Cen, R., Ostriker, J. and Peebles, P.J.E.: 1993, Astrophys. J. 415, 423.
Chandrasekhar, S.: 1964a, Phys. Rev. Lett. 12, 114 & 437.
Chandrasekhar, S.: 1964b, Astrophys. J. 140, 417.
Colgate, S.A.: 1967, Astrophys. J. 150, 163.
Doremus, S. and Feix, M.R.: 1972, Astron. Astrophys. 20, 259.
Durgapal, M.C. and Rawat, P.S.: 1980, Mon. Not. R. Astron. Soc. 192, 659.
Fackerell, E.D.: 1968, Astrophys. J. 153, 643.
Fowler, W.A.: 1964, Rev. Mod. Phys. 36, 545 & 1104.
Fowler, W.A.: 1966, Astrophys. J. 144, 180.
Feynman, R.P.: 1963, Private Communication.
Gillon, D., Doremus, J.P. and Baumann, G.: 1976, Astron. Astrophys. 48, 467.
Goldstein, S.: 1971, Astrophys. Space Sci. 13, 387.
Henon, M.: 1973, Astron. Astrophys. 24, 229.
Hoyle, F. and Fowler, W.A.: 1963a, Mon. Not. R. Astron. Soc. 125, 169.
Hoyle, F. and Fowler, W.A.: 1963b, Nature 197, 533.
Iben Jr., I.: 1963, Astrophys. J. 138, 1090.
Ipser, J.R. and Horwitz, G.: 1979, Astrophys. J. 232, 863.
Kormendy, J., Bender, R., Richstone, D., Ajhar, E.A., Dressler, A., Faber, S.M., Gebhardt, K., Grillmair, C., Lauer T.R. and Tremaine, S.: 1996, Astrophys. J. 459, L57.
Ledoux, P.: 1958, Handbuch der Physik 51, 605.
Lynden-Bell, D. and Sannit, N.: 1969, Mon. Not. R. Astron. Soc. 143, 167.
McLaughlin, G. and Fuller, G.: 1996, Astrophys. J. 456, 71.
Mehra, A.L.: 1966, J. Aust. Math. Soc. 6, 153.
Merafina, M. and Ruffini, R.: 1989, Astron. Astrophys. 221, 4.
Michel, F.C.: 1963, Astrophys. J. 138, 1097.
Misner, C.W. and Zapolsky, H.S.: 1964, Phys. Rev. Lett. 12, 635.
Negi, P.S. and Durgapal, M.C.: 1996, Astrophys. Space Sci. 245, 97.
Negi, P.S. and Durgapal, M.C.: 1999, Gen. Relativ. Gravitation 31, 13.
Oppenheimer, J.R. and Volkoff, G.M.: 1939, Phys. Rev. 55, 374.
Peebles, P.J.E.: 1987, Astrophys. J. 313, L73.
Rubin, V.C.: 1997, Dark Matter, Bright Galaxies, AIP Publishers, American Institute of Physics.
Sanders, R.: 1970, Astrophys. J. 162, 791.
Shapiro, S.L. and Teukolsky, S.A.: 1983, Black Holes, White Dwarfs and Newtron Stars: The Physics of compact Objects, Wiley, New York.
Shapiro, S.L. and Teukolsky, S.A.: 1985a, Astrophys. J. 292, L41.
Shapiro, S.L. and Teukolsky, S.A.: 1985b, Astrophys. J. 298, 58.
Spitzer, L. and Hart, M.H.: 1971, Astrophys. J. 164, 399.
Tolman, R.C.: 1939, Phys. Rev. 55, 364.
Tooper, R.F.: 1965, Astrophys. J. 142, 1541.
Weinberg, S.: 1972, Gravitation and Cosmology, Wiley, New York.
Zeldovich, Ya.B. and Novikov, I.D.: 1978, Relativistic Astrophysics 1, The University of Chicago Press, Chicago (Midway Reprint).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Negi, P., Durgapal, M. Relativistic supermassive stars. Astrophysics and Space Science 275, 185–207 (2001). https://doi.org/10.1023/A:1002707730439
Issue Date:
DOI: https://doi.org/10.1023/A:1002707730439