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The Astrophysical Journal, 557:L47L50, 2001 August 10 2001. The American Astronomical Society. All rights reserved. Printed in U.S.A.
 

Summary: L47
The Astrophysical Journal, 557:L47L50, 2001 August 10
2001. The American Astronomical Society. All rights reserved. Printed in U.S.A.
UPPER LIMITS ON O vi EMISSION FROM VOYAGER OBSERVATIONS
Jayant Murthy
Indian Institute of Astrophysics, Koramangala, Bangalore 560 034, India; jmurthy@yahoo.com
R. C. Henry and R. L. Shelton
Johns Hopkins University, Department of Physics and Astronomy, Charles and 34th Street,
Bloomberg Center, Baltimore, MD 21218-2686
and
J. B. Holberg
Lunar and Planetary Laboratory, University of Arizona, Space Sciences Building,
P.O. Box 210092, Tucson, AZ 85721-0092
Received 2000 May 2; accepted 2001 June 29; published 2001 July 20
ABSTRACT
We have examined 426 Voyager fields distributed across the sky for O vi ll1032, 1038 emission from the
Galactic diffuse interstellar medium. No such emission was detected in any of our observed fields. Our most
constraining limit was a 90% confidence upper limit of 2600 photons cm sr s on the doublet emission in2 1 1
the direction . Combining this with an absorption-line measurement in nearly the same(l, b) p (117.3, 50.6)
direction allows us to place an upper limit of 0.01 cm on the electron density of the hot gas in this direction.3

  

Source: Henry, Richard C.- Department of Physics and Astronomy, Johns Hopkins University

 

Collections: Physics