Filamentary structure of old optical supernova remnants

Journal Article · Sat Nov 01 04:00:00 EST 1980 · Sov. Astron. (Engl. Transl.); (United States)

OSTI ID:5436238

Lozinskaia, T A

Interferometric and spectroscopic observations of optical supernova remnants that bear on the problem of how the fine filamentary structure is formed are summarized. A morphological classification of the nebulae observed is presented, and its relation to the physical parameters of the remnants and the ambient interstellar medium is examined. In addition, the spatial configuration and the optical emission of the filaments are analyzed. It is found that the filaments represent dense ropes or filaments embedded in amorphous gas of lower density. Their thickness, 0.001 to 0.01 pc, is comparable with the thickness of the radiative region behind the shock front, and the density of the luminous gas, (0.5-2) x 10 to the 3rd per cu cm, is about two orders of magnitude higher than the typical undisturbed density in the cloud component of the interstellar medium. The thin filamentary structure develops primarily in remnants which are young in evolutionary terms, are in their adiabatic expansion phase, and have a high luminosity (not less than 10 to the 35th erg/sec) in the soft X-ray range.

• Research Organization: Moskovskii Gosudarstvennyi Universitet, Moscow, USSR
• OSTI ID: 5436238
• Journal Information: Sov. Astron. (Engl. Transl.); (United States), Journal Name: Sov. Astron. (Engl. Transl.); (United States) Vol. 24; ISSN SAAJA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC GASES
COSMIC RADIO SOURCES
FLUIDS
GASES
INTERFEROMETRY
INTERSTELLAR SPACE
LUMINOSITY
NEBULAE
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SHOCK WAVES
SPACE
SPECTRA
STAR EVOLUTION
SUPERNOVA REMNANTS