Evidence for iron whiskers in SN1987A

Details Evidence for iron whiskers in SN1987A Evidence for iron whiskers in SN1987A

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.200..145w&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 200, no. 1, p. 145-150.

Astronomy and Astrophysics

Astronomy

9

Cosmic Dust, Infrared Astronomy, Iron, Supernova 1987A, Whiskers (Crystals), Absorptivity, Infrared Spectra

Scientific paper

The development of infrared emission from Supernova 1987A is modelled on the basis of a mixture of millimeter-long iron whiskers of radius 0.01 micron, and spherical iron grains of the same radius. The total mass of iron grains involved is less than 10 exp -5 solar mass. The observations are consistent with only a small mass fraction of whisker-type grains relative to spherical grains present in the infrared emitting region, but with larger quantities of whiskers expelled further out. Spectral data over the wavelength range 30 cm - 3 microns at around day 1300 provides striking evidence for iron whiskers in the infrared emitting region of SN1987A.

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