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Infrared, submillimeter, and millimeter observations of the soft gamma-ray repeatersSoft gamma ray repeaters appear to be a new class of neutron stars. While a counterpart to SGR 0525-66 was detected uniquely in the X-ray band, SGR 1806-20 and SGR 1900+14 have unusual stellar counterparts whose spectra peak in the infrared. The infrared spectra appear to contain several components: the photospheric emission from stars dominates at shorter wavelengths; a bright point source dominates at 25 micrometers, and an extended source dominates at 60 micrometers. The longer wavelength spectra are inconsistent with mono-energetic synchrotron and black body radiation models. Recent millimeter, submillimeter and infrared observations are reviewed. A preliminary analysis of the higher resolution infrared spectra of SGR 1806-20 and SGR 1900+14 is outlined. These confirm previous observations suggesting that SGR1806-20 has an outflow and that the stars comprising the counterpart to SGR 1900+14 have very similar spectra.
Document ID
19970025760
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Smith, I. A.
(Rice Univ. Houston, TX United States)
Joyce, R.
(Kitt Peak National Observatory Tucson, AZ United States)
Schultz, A. S. B.
(NASA Ames Research Center Moffett Field, CA United States)
Hurley, K.
(California Univ. Berkeley, CA United States)
Vrba, F. J.
(Naval Observatory Flaggstaff, AZ United States)
Hartmann, D.
(Clemson Univ. SC United States)
Kouveliotou, C.
(NASA Marshall Space Flight Center Huntsville, AL United States)
vanParadijs, J.
(Amsterdam Univ. Netherlands)
Waters, L. B. F. M.
(Amsterdam Univ. Netherlands)
Chernin, L. M.
(California Univ. Berkeley, CA United States)
Durouchoux, P.
(Commissariat a l'Energie Atomique Gif-sur-Yvette, France)
Corbel, S.
(Commissariat a l'Energie Atomique Gif-sur-Yvette, France)
Wallyn, P.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Date Acquired
August 17, 2013
Publication Date
March 1, 1997
Subject Category
Astronomy
Accession Number
97N25230
Funding Number(s)
CONTRACT_GRANT: NSF AST-93-20238
CONTRACT_GRANT: NAG5-1560
CONTRACT_GRANT: NAG5-2755
CONTRACT_GRANT: NAG5-1578
CONTRACT_GRANT: NAG5-2772
CONTRACT_GRANT: JPL-958056
CONTRACT_GRANT: NAG5-1547
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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