Helium atoms in interstellar and interplanetary media, part 3: Temperature and velocity of interstellar wind

Details Helium atoms in interstellar and interplanetary media, part 3: Temperature and velocity of interstellar wind Helium atoms in interstellar and interplanetary media, part 3: Temperature and velocity of interstellar wind

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984rpspr...2...64k&link_type=abstract

In its USSR Rept.: Space (JPRS-USP-84-005) p 64-65 (SEE N85-11060 02-12) Transl. into ENGLISH from Kosmicheskiye Issled. (Mos

Physics

Helium Atoms, Interplanetary Medium, Interstellar Matter, Stellar Winds, Wind Velocity, Background Radiation, Gravitational Fields, Photometry, Resonance Scattering, Solar Wind

Scientific paper

The distribution of intensities over the celestial sphere in the neutral helium line ar lambda=584 A which is obtained from background radiation observations on the Prognoz-6 satellite with a 4 channel photometer was used to find the temperature and magnitude of the velocity vector of the interstellar wind. The direction of motin of the interstellar medium relative to the sun was determined from the same observations. Interaction of neutral helium in the interstellar medium with the gravitational field of the sun and resonant scattering on intereplanetary helium are calculated. The temperature and velocity of the model which best agree with the results were determined separately for each of six measurement sessions onboard the satellite. The average temperature was 11,600 K, velocity 25.3 km/s. It is found that the mean density of helium in space near the sun is be 0.018 cm -3.

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