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Proceedings Paper

The Spectroscopy of Plasma Evolution from Astrophysical Radiation (SPEAR) mission
Author(s): Jerry Edelstein; Eric J. Korpela; Wonyong Han; Kyung-wook W. Min; Uk-won Nam; Barry Y. Welsh
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Paper Abstract

The evolution of hot interstellar medium (ISM) in galaxies is fundamental to the evolution of our cosmos. The Spectroscopy of Plasma Evolution from Astrophysical Radiation (SPEAR) mission will study the hot ISM, providing pointed observations and the first all-sky spectral maps in the Far (FUV) Ultraviolet. The FUV bandpass contains the primary cooling lines of abundant elements in a variety of ionization states. SPEAR's broad bandpass (λλ 900 - 1750 Å), spectral resolution (λ/δλ ~ 700) and imaging resolution (5' - 10') has been chosen to determine independently the quantity, temperature, depletion, and ionization of hot galactic gas. These SPEAR data will allow us to study the hot ISM on both large and small scales and to discriminate among models of the large-scale creation, distribution, and evolution of hot gas in the Galactic disk and halo.

Paper Details

Date Published: 24 February 2003
PDF: 7 pages
Proc. SPIE 4854, Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation, (24 February 2003); doi: 10.1117/12.460010
Show Author Affiliations
Jerry Edelstein, Space Sciences Lab., Univ. of California/Berkeley (United States)
Eric J. Korpela, Space Sciences Lab., Univ. of California/Berkeley (United States)
Wonyong Han, Korea Astronomy Observatory (South Korea)
Kyung-wook W. Min, Korea Advanced Institute of Science and Technology (South Korea)
Uk-won Nam, Korea Astronomy Observatory (South Korea)
Barry Y. Welsh, Space Sciences Lab., Univ. of California/Berkeley (United States)


Published in SPIE Proceedings Vol. 4854:
Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation
J. Chris Blades; Oswald H. W. Siegmund, Editor(s)

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