Abstract
At late times (200 days), when the photosphere of continuum emission has disappeared from the envelope, the radiation of the supernova 1987A is powered by γ-rays resulting from 56Co decays. The spectrum formation at such a late time is a highly non-linear process (XU [1]). The γ-ray photons first lose their energy due to Compton scattering and photoelectric absorption, generating non-thermal energetic electrons. These energetic electrons are then slowed down by Coulomb scattering or ionizing and exciting different ions in the envelope. The ions will recombine and de-excite, radiating away their energy in infrared (IR), optical and primarily ultraviolet (UV) wavebands.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Y. Xu: Ph. D. Thesis, University of Colorado, Boulder (1989).
S. H. Moseley, E. Dwel, R. F. Silverberg, W. J. Glaccum, J. R. Graham, R. F. Loewenstein: Ap.J., (1989), in press.
S. E. Woosley: Ap. J., 330, 218 (1988).
J. M. Shull, M. E. Van Steenberg: Ap. J., 298, 268 (1985).
R. McCray: in Molecular Processes in Astrophysics, Ed. by T.H. Hartquist, (Cambridge Universtiy Press, 1989), in press.
N. N. Chugai: Soviet Astron. Lett., 13(4), 282 (1987).
H. Nussbaumer, W. Schrmütz: Astron. Astrophys., 138, 495 (1984).
S. Kumagai, T. Shigeyama, K. Nomoto, M. Itoh, J. Nishimura, S. Tsuruta: Ap. J., (1989), submitted.
D. Mihalas: Stellar Atmosphere, ( San Franciso: W. H. Freeman and Company, 1978 ).
E. Oliva, A. F. M. Moorwood, I. J. Danziger: In Proc. 22nd, ESLAB Symp.on Infrared Spectroscopy in Astronmy, ed. by H. Glasse, M. S. Kessler, and R. Gonzales-Riesta, (ESA SP, 1988) p. 270.
D. C. Abbott, L. B. Lucy: Ap. J., 288, 679 (1985).
M. M. Phillips: In Supernova 1987A in the Large Magellanic Cloud, ed. by M. Kafatos, and A. Michalitsianos, ( Cambridge: Univ. Press, 1988 ), p. 16.
Y. Xu, P. G. Sutherland, R. McCray, R. R. Ross: Ap. J., 327, 197 (1988).
J. M. Shull, Y. Xu: In Supernova 1987A in the Large Magellanic Cloud, ed. by M. Kafatos, and A. Michalitsianos, ( Cambridge: Univ. Press, 1988 ), p. 371.
L. V. Spencer, U. Fano: Phys. Rev., 93, 1172 (1954).
G. H. Rybicki, D. G. Hummer: Ap. J., 219, 654 (1978).
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1991 Springer-Verlag New York, Inc.
About this paper
Cite this paper
Xu, Y., McCray, R. (1991). Late Time Spectrum of SN 1987A. In: Woosley, S.E. (eds) Supernovae. Santa Cruz Summer Workshops in Astronomy and Astrophysics. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-2988-9_65
Download citation
DOI: https://doi.org/10.1007/978-1-4612-2988-9_65
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4612-7748-4
Online ISBN: 978-1-4612-2988-9
eBook Packages: Springer Book Archive