Neutral hydrogen in the vicinity of galactic radio sources: the supernova remnant W28

Journal Article · Fri Jan 01 04:00:00 EST 1982 · Sov. Astron. (Engl. Transl.); (United States)

OSTI ID:6599396

Venger, A P; Gosachinskii, I V; Grachev, V G; Egorova, T M; Ryzhkov, N F; Khersonskii, V K

The H I line in the vicinity of the radio source W28 has been observed in absorption and emission with the RATAN-600 radio telescope at a resolution of 2'.4 x 45' x 6.3 km/sec. The absorption line yields a distance of roughly-equal3 kpc to the supernova remnant; the compact H II regions observed there are located at the same distance. In emission, an expanding H I envelope 82 pc in diameter has been detected around W28; its mass is 6.9 x 10/sup 4/ M/sub sun/ and it is expanding at roughly-equal20 km/sec. The supernova remnant is 5.8 x 10/sup 5/ yr old and the energy of the original explosion was 8.4 x 10/sup 51/ erg. Some conclusions are reached as to the possible genetic relation between the H II zones and the SNR.

• Research Organization: Special Astrophysical Observatory, USSR Academy of Sciences, Nizhnii Arkhyz
• OSTI ID: 6599396
• Journal Information: Sov. Astron. (Engl. Transl.); (United States), Journal Name: Sov. Astron. (Engl. Transl.); (United States) Vol. 26:1; ISSN SAAJA
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
640105 -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION SPECTRA
EXPANSION
FREQUENCY RANGE
GHZ RANGE
GHZ RANGE 01-100
H1 REGIONS
H2 REGIONS
HYDROGEN
NONMETALS
RADIATIONS
RADIOWAVE RADIATION
SPECTRA
SUPERNOVA REMNANTS
VELOCITY