Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...246..386w&link_type=abstract
Astrophysical Journal, Part 1, vol. 246, June 1, 1981, p. 386-393.
Astronomy and Astrophysics
Astronomy
59
Abundance, Helium, Interstellar Gas, Ultraviolet Spectra, Emission Spectra, Extreme Ultraviolet Radiation, Flow Velocity, Gas Density, Gas Ionization, Gas Temperature, Solar System, Spaceborne Astronomy, Ultraviolet Astronomy
Scientific paper
Extreme ultraviolet instruments on the Solrad 11B satellite observed helium in the local interstellar medium (LISM) flowing through the solar system through resonantly scattered 584 A solar radiation. Since this satellite orbited the earth at 130,000 km altitude and thus was far removed from the geocoronal airglow, reliable measurements over many directions at a given time were made. As a result, these data, together with hot gas density-resonance scatter computations and previous results, permit accurate determination of quite narrow ranges of LISM velocity (22-28 km/s) and temperature (9,000-15,000 K). The derived LISM helium density of 0.011-0.027/cu cm, when compared with the derived density of the inflowing LISM hydrogen of 0.04-0.06/cu cm, suggests that the local interstellar gas is substantially ionized.
Meier Robert R.
Weller C. S.
No associations
LandOfFree
Characteristics of the helium component of the local interstellar medium does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Characteristics of the helium component of the local interstellar medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characteristics of the helium component of the local interstellar medium will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-991497