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New Observations of Non-Radiative Shocks in the Cygnus Loop

Published online by Cambridge University Press:  12 April 2016

J.J. Hester
Affiliation:
IPAC, California Institute of Technology
J.C. Raymond
Affiliation:
Harvard Smithsonian Center for Astrophysics

Abstract

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We present deep Hα and [O III] images and echelle spectra of non-radiative shocks in the NE Cygnus Loop. The contrast between the smooth Hα structure and the clumpier [O III] indicates that portions of the sheet-like front are beginning to go radiative. The column depth through the shock seems to be ≼ 1017.5 cm−2 for the entire region – a remarkable constraint for such a large structure.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1988

References

Fesen, R.A., and Itoh, H. 1985, Ap. J., 295, 43.CrossRefGoogle Scholar
Hester, J.J. 1987, Ap. J., 314, 187.Google Scholar
Hester, J.J., and Cox, D.P. 1986, Ap. J., 300, 675.Google Scholar
Hester, J.J., Raymond, J.C., and Danielson, G.E. 1986, Ap. J. (Letters), 303, L17 (HRD).CrossRefGoogle Scholar
Ku, W.H.-H., Kahn, S.M., Pisarski, R., and Long, K.S. 1984, Ap. J., 278, 615.Google Scholar
Raymond, J.C., Blair, W.P., Fesen, R.A., and Gull, T.R. 1983, Ap. J., 275, 636 (RBFG).CrossRefGoogle Scholar