Abstract
We consider the electron—positron plasma generation processes in the magnetospheres of magnetars—neutron stars with strong surface magnetic fields, B ≃ 1014–1015 G. We show that the photon splitting in a magnetic field, which is effective at large field strengths, does not lead to the suppression of plasma multiplication, but manifests itself in a high polarization of γ-ray photons. A high magnetic field strength does not give rise to the second generation of particles produced by synchrotron photons. However, the density of the first-generation particles produced by curvature photons in the magnetospheres of magnetars can exceed the density of the same particles in the magnetospheres of ordinary radio pulsars. The plasma generation inefficiency can be attributed only to slow magnetar rotation, which causes the energy range of the produced particles to narrow. We have found a boundary in the \( P - \dot P \) diagram that defines the plasma generation threshold in a magnetar magnetosphere.
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References
S. L. Adler, Ann. Phys. (N.Y.) 67, 599 (1971).
V. N. Baier, A. I. Milstein, and R. Zh. Shaisultanov, Phys. Rev. Lett. 77, 1691 (1996).
M. G. Baring and A. K. Harding, Astrophys. J. 482, 372 (1997).
M. G. Baring and A. K. Harding, Astrophys. J. 547, 929 (2001).
V. S. Beskin, Astrofizika 18, 439 (1982) [Astrophys. 18, 266 (1982)].
V. S. Beskin, A. V. Gurevich, and Ya. N. Istomin, Physics of the Pulsar Magnetosphere (Cambridge Univ. Press, Cambridge, 1993).
A. Bonanno, V. Urpin, and G. Belvedere, Astron. Astrophys. 451, 1049 (2006).
F. Camilo, S. M. Ransom, J. P. Halpern, et al., Nature 442, 892 (2006).
F. Camilo, J. Reynolds, S. Johnston, et al., Astrophys. J. 659, L37 (2007).
A. F. Cheng and M. A. Ruderman, Astrophys. J. 216, 865 (1977).
J. K. Daugherty and A. K. Harding, Astrophys. J. 252, 337 (1982).
R. C. Duncan and C. Thompson, Astrophys. J. 392, L9 (1992).
A. V. Gurevich and Ya. N. Istomin, Zh. Éksp. Teor. Fiz. 89, 3 (1985) [Sov. Phys. JETP 62, 1 (1985)].
A. K. Harding, M. G. Baring, and P. L. Gonthier, Astrophys. J. 476, 246 (1997).
J. A. Hibschman and J. Arons, Astrophys. J. 560, 871 (2001).
A. I. Ibrahim, S. Safi-Harb, J. H. Swank, et al., Astrophys. J. 574, L51 (2002).
Ya. N. Istomin, Progress in Neutron Star Research, Ed. by A. P. Wass (Nova Sci., 2005), p. 27.
N. P. Klepikov, Zh. Éksp. Teor. Fiz. 26, 19 (1954).
M. Kramer, B. W. Stappers, A. Jessner, et al., Mon. Not. R. Astron. Soc. 377, 107 (2007).
V. M. Malofeev., O. I. Malov, and D. A. Teplykh, in Proceedings of the IAU Symposium No. 218: Young Neutron Stars and Their Environments, Ed. by F. Camilo and B. M. Gaensler (Astron. Soc. Pac., San Francisco, 2004), p. 261.
V. M. Malofeev, O. I. Malov, D. A. Teplykh, et al., Astron. Zh. 82, 273 (2005) [Astron. Rep. 49, 242 (2005)].
R. N. Manchester, G. B. Hobbs, A. Teoh, et al., Astron. J. 129, 1993 (2005).
M. A. Ruderman and P. G. Sutherland, Astrophys. J. 196, 51 (1975).
L. Semionova and D. Leahy, Astron. Astrophys. 373, 272 (2001).
A. A. Sokolov and I. M. Ternov, Radiation from Relativistic Electrons (Moscow, Nauka, 1983; AIP, New York, 1986), p. 78.
W.-Y. Tsai and T. Erber, Phys. Rev. D 10, 492 (1974).
V. V. Usov, Astrophys. J. 572, L87 (2002).
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Original Russian Text © Ya.N. Istomin, D.N. Sobyanin, 2007, published in Pis’ma v Astronomicheskiĭ Zhurnal, 2007, Vol. 33, No. 10, pp. 740–753.
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Istomin, Y.N., Sobyanin, D.N. Electron-positron plasma generation in a magnetar magnetosphere. Astron. Lett. 33, 660–672 (2007). https://doi.org/10.1134/S1063773707100040
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DOI: https://doi.org/10.1134/S1063773707100040