THE PHYSICAL NATURE OF NONTHERMAL ULTRAVIOLET EMISSION IN THE SPECTRA OF T TAU STARS AND THE ORIGIN OF COSMIC RAYS. I

Journal Article · Wed Jan 01 04:00:00 EST 1958 · Astron. Zhur.

OSTI ID:4251582

Gordon, I M

The non-thermal ultraviolet radiation of T tau stars can be interpreted by the theory of the excitation of emission lines in the atmospheres of non- stationary stars by synchrotron radiation of relativistic electrons. It is assumed that ultraviolet eniission ln the region lambda < 3800 A is a confluence of higher members of the Balmer series which merge into a Balmer continuum, emission arises in a small part of the stellar atmosphere. the high density of non-thermal radiation leads to the predominance of induced transitions and to broadening and merging of the higher members of the Balmer series. and the polarization of the Balmer lines and the Balmer continuum is caused by the linear polarization of the synchrotron radiation which causes induced transitions. The spectrum of synchrotron radiation in a broad interval satlsfies the expression corresponding to the energy expression of relativistic particles. The total energy of relativistic electrons generated is more than the total thermal radiation of the star. (J.S.R.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-13-019496
• OSTI ID: 4251582
• Journal Information: Astron. Zhur., Journal Name: Astron. Zhur. Vol. Vol: 35, No. 3
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ATMOSPHERE
BALMER LINES
CONFIGURATION
COSMIC RADIATION
DENSITY
ELECTRONS
EMISSION
EXCITATION
FREQUENCY
HYDROGEN
PHYSICS AND MATHEMATICS
POLARIZATION
RELATIVITY THEORY
SPECTRA
STARS
SYNCHROTRONS
TRANSIENTS
ULTRAVIOLET RADIATION