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Review of Speckle Observations of Supernova 1987A

Published online by Cambridge University Press:  25 April 2016

W.P.S. Meikle
W.P.S. Meikle*
Affiliation:
Imperial College of Science, Technology & Medicine, London
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Abstract

SN 1987A is sufficiently close to allow a unique examination of the morphology of a supernova, using speckle interferometry. Several groups [Center for Astrophysics (CfA); Imperial College (IC); Mount Stromlo and Siding Spring Observatories/Anglo-Australian Observatory (M/A)] have reported optical speckle observations. At Hα, both CfA and M/A have determined the angular extent of the emission, and reasonable agreement is obtained. The speckle-derived values are consistent with those obtained from line profiles. IC has also succeeded in resolving the supernova at Hα. At wavelengths other than Hα, at early epochs, angular diameters obtained by CfA are larger than those derived from photometric and spectroscopic measurements, possibly due to scattering effects. At later epochs, the diameters exhibit little variation between the wavelengths examined. CfA reports significant asymmetry in the late epoch data.

Several attempts have been made to re-observe (at optical wavelengths) the companion object, but none have succeeded. The nature of this phenomenon is still controversial, but the evidence indicates that the companion was real, with emission from dust apparently being the least problematic explanation. Support for this may lie in IR speckle observations (Haute Provence/Lyon) which, on about day 115, indicated the presence of one or more resolved components at an angular displacement comparable to that of the optical companion.

Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 7 , Issue 4 , 1988 , pp. 473 - 478
Copyright
Copyright © Astronomical Society of Australia 1988

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References

Aitken, D.K., Smith, C.H., James, S.D., Roche, P.P., Hyland, A.R., McGregor, P.J. 1988, Mon. Not. R. Astron. Soc. 231, 7p.CrossRefGoogle Scholar
Burke, B.F. 1988, (preprint).Google Scholar
Catchpole, R.M. et al. 1987, Mon. Not. R. Astron. Soc. 229, 15p.CrossRefGoogle Scholar
Chalabaev, A., Perrier, C, Mariotti, J.M. 1987, IAU Cire. #4481.Google Scholar
Chalabaev, A., Perrier, C, Mariotti, J.M. 1988, , (preprint).Google Scholar
Cropper, M., Bailey, J., McCowage, J., Cannon, R.D., Couch, W.J., Walsh, J.R., Strade, J.O., Freeman, F. 1988, Mon. Not. R. Astron. Soc. 231, 695.CrossRefGoogle Scholar
Dainty, J.C. 1984, in Laser Speckle and Related Phenomena, “Topics in Applied Physics” 9, ed. Dainty, J.C., (Springer-Verlag) p.257.Google Scholar
Feiten, J.E., Dwek, E., Viegas-Aldrovandi, S.M. 1988, As-trophys. J. (in press).Google Scholar
Foy, B. 1987, in “Instrumentation for Ground-based Optical Astronomy”. Proc. 9th Summer Workshop in Astronomy and Astrophysics, University of California, Santa Cruz, (in press).Google Scholar
Gilmozzi, R. 1988, this volume.Google Scholar
Hebden, J.C. 1984, Ph.D Thesis, Imperial College, London.Google Scholar
Hebden, J.C, Morgan, B.L., Vine, H.A. 1983, Proc. Soc. Photo-optical Instrumentation Engineers 445, 477.Google Scholar
Hershkowitz, S., Linder, E., Wagoner, R.V. 1986, Astro-phys. J. 303, 800.Google Scholar
Hillebrandt, W., Höflich, P., Schmidt, H.U., Truran, J.W. 1987, Astron. Astrophys. 186, L9.Google Scholar
Höflich, P. 1988, this volume.Google Scholar
Itoh, H., Hayakawa, S., Masai, K., Nomoto, K. 1987, Pubi. Astron. Soc. Japan 39, 1987.Google Scholar
Karovska, M., Nisenson, P., Papaliolios, C., Standley, C., 1987a, IAU Circ. #4450, 4457.Google Scholar
Karovska, M., Koechlin, L., Nisenson, P., Papaliolios, C., Standley, C. 1987b, IAU Circ. #4521.Google Scholar
Karovska, M., Nisenson, P., Papaliolios, C., Standley, C. 1987c, IAU Circ. #4440.Google Scholar
Karovska, M., Koechlin, L., Nisenson, P., Papaliolios, C., Standley, C. 1988a, (preprint).Google Scholar
Karovska, M., Koechlin, L., Nisenson, P., Papaliolios, C., Standley, C. 1988b, IAU Circ. #4604.Google Scholar
Labeyrie, A. 1978, Annu. Rev. Astron. Astrophys. 16, 77.CrossRefGoogle Scholar
Lucy, L.B. 1988, Proc. George Mason Workshop on SN 1987A, “Supernova 1987A in the Large Magellanic Cloud”, eds. Kafatos, M. and Michalitsianos, A. (C.U.P.) p.323.Google Scholar
Masai, K., Hayakawa, S., Inoue, H., Itoh, H., Nomoto, K. 1988, Nature 335, 804.CrossRefGoogle Scholar
Matcher, S.J., Meikle, W.P.S., Morgan, B.L. 1988a, in preparation.Google Scholar
Matcher, S.J., Meikle, W.P.S., Morgan, B.L., Vine, H., Spyromilio, J., Blackmore, D. 1988b, IAU Circ. #4543.Google Scholar
Meikle, W.P.S., Matcher, S.J., Morgan, B.L. 1987, Nature 329, 608.CrossRefGoogle Scholar
Menzies, J.W. et al. 1987, Mon. Not. R. Astron. Soc. 227, 39p.CrossRefGoogle Scholar
Nisenson, P., Papaliolios, C., Karovska, M., Noyes, R. 1987, Astrophys. J. Lett. 320, L15.Google Scholar
Papaliolios, C, Nisenson, P, Ebstein, 1985, Appi. Opt. 24, 287.CrossRefGoogle Scholar
Perrier, C. 1987, IAU Circ. #4417.Google Scholar
Phinney, E.S. 1988, Nature 331, 566.CrossRefGoogle Scholar
Quenby, J.J. 1987, (preprint).Google Scholar
Rank, D.M., Bregman, J., Witteborn, F.C., Cohen, M., Lynch, D.K., Russell, R.W. 1988, Astrophys. J. 325, L1.CrossRefGoogle Scholar
Wagoner, R.V. 1981, Astrophys. J. 250, L65.CrossRefGoogle Scholar
Whitelock, P.A. et al. 1988, Mon. Not. R. Astron. Soc. 234, 5p.CrossRefGoogle Scholar
Wood, P.R. 1985, Proc. Astron. Soc. Aust. 6, 120.Google Scholar
Wood, P.R., Nulsen, P.E.J., Gillingham, P.R., Bessell, M.S., Dopita, M.A., McCowage C., 1988, Astrophys. J. submitted.Google Scholar
Worden, S.P., Stein, M.K., Schmidt, G.D., Angel, J.R.P. 1977, Icarus 32, 450.CrossRefGoogle Scholar