Preliminary Results from SPEAR Observations of the Vela Supernova Remnant

Details Preliminary Results from SPEAR Observations of the Vela Supernova Remnant Preliminary Results from SPEAR Observations of the Vela Supernova Remnant

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.6112n&link_type=abstract

American Astronomical Society Meeting 204, #61.12; Bulletin of the American Astronomical Society, Vol. 36, p.770

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The Vela Supernova Remnant (SNR) is one of the closest SNRs to the solar system, at a distance of about 250 pc. Vela shows varied and pronounced characteristics representative of shock waves such as optical filaments, X-ray knots, and a non-thermal radio source, and is consequently an important observational laboratory.
Despite a wealth of observational opportunities, detailed studies of Vela tend to be restricted to specific regions due to its large angular size. SPEAR (Spectroscopy of Plasma Emission from Astrophysical Radiation) has obtained the first spectral images of the entire Vela SNR in the far ultraviolet. The global spectrum of Vela shows emission lines from CIII, CIV, OVI, and other interesting species. We show preliminary images and spectra (900-1150 Å, 1350-1730 Å, λ / Δ λ 500) of Vela and compare our images with images in other wavelength bands such as soft X-ray and H-alpha. We discuss their implications for the physical conditions of the remnant.
Acknowlegement: The SPEAR payload is supported in part by the NASA Research Carriers grant NAG5-5335. The STSAT-1 Mission is supported by the Korea Ministry of Science and Technology.

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