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An Instrument to Study the Diffuse EUV Astronomical Background

Published online by Cambridge University Press:  12 April 2016

S. Bowyer ,
J. Edelstein ,
M. Lampton ,
L. Morales ,
J. Perez Mercader  and
A. Gimenez
S. Bowyer
Affiliation:
Center for EUV Astrophysics, 2150 Kittredge St., University of California, Berkeley, CA 94720-5030, USA
J. Edelstein
Affiliation:
Center for EUV Astrophysics, 2150 Kittredge St., University of California, Berkeley, CA 94720-5030, USA
M. Lampton
Affiliation:
Center for EUV Astrophysics, 2150 Kittredge St., University of California, Berkeley, CA 94720-5030, USA
L. Morales
Affiliation:
Universidad Autonoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain
J. Perez Mercader
Affiliation:
LAEFF, Institute Nacional De Tecnica Aerospacial, Apartado de Correos 50727, 28080 Madrid, Spain
A. Gimenez
Affiliation:
LAEFF, Institute Nacional De Tecnica Aerospacial, Apartado de Correos 50727, 28080 Madrid, Spain

Abstract

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The extreme ultraviolet (EUV) diffuse background is the most poorly known of any of the diffuse astronomical backgrounds. Only upper limits to this flux exist, obtained with spectrometers with very crude (from ≈ 15 to 30 Å) resolution; these limits are generally one to two orders of magnitude larger than the expected sources of cosmic flux. A variety of source mechanisms have been postulated to radiate in this bandpass; the most discussed is the hot phase of the interstellar medium. A speculative possibility is that hot dark matter in the form of massive, radiatively unstable neutrinos in our Galaxy will produce a unique line in this bandpass. We describe an instrument employing a new type of spectrometer which will provide ~5 Å resolution and unprecedented sensitivity for diffuse EUV radiation. The instrument will be carried aboard the newly developed Spanish Minisat satellite.

Type
XIV. Future Opportunities in EUV Astronomy
Information
International Astronomical Union Colloquium , Volume 152: Astrophysics in the Extreme Ultraviolet , 1996 , pp. 611 - 616
Copyright
Copyright © Kluwer 1996

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