Acceleration of Relativistic Particles in Stellar Jets

The efficiency of the transfer of energy from supernovae into interstellar cloud motions is investigated. A lower limit of about 0·002 is obtained, but values near 0·01 are more likely. Taking all uncertainties in the theory and observations into account, the energy per supernova, in the form of relativistic particles or high-velocity matter, needed to maintain the random motions in the interstellar gas is estimated as 1051·4±1ergs.

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Spontaneous and induced emission by relativistic particles in a crystal and possibilities for utilization of this effect in physics

Uspekhi Fizicheskih Nauk ◽

10.3367/ufnr.0127.197903j.0531 ◽

1979 ◽

Vol 127 (3) ◽

pp. 531 ◽

Cited By ~ 6

Author(s):

M.A. Kumakhov

Keyword(s):

Relativistic Particles

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Optical Emission in the Beam of Stellar Jets: A Possible Mechanism

The Astrophysical Journal ◽

10.1086/303800 ◽

1997 ◽

Vol 478 (2) ◽

pp. 594-602 ◽

Cited By ~ 8

Author(s):

F. Bacciotti ◽

C. Chiuderi ◽

A. Pouquet

Keyword(s):

Optical Emission ◽

Stellar Jets

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Active Nuclei and Redshift Problems

Highlights of Astronomy ◽

10.1017/s1539299600005542 ◽

1983 ◽

Vol 6 ◽

pp. 531-533

Author(s):

Geoffrey Burbidge

Keyword(s):

Galactic Nuclei ◽

Seyfert Galaxies ◽

Radio Sources ◽

Powerful Radio ◽

Radiation Mechanism ◽

X Ray ◽

Major Interest ◽

Relativistic Particles

More than 20 years ago V. A. Ambartsumian proposed that much of the activity in galaxies was dominated and even generated by their nuclei. Subsequent observational work in radio, optical and x-ray frequencies has borne out his prophecy, and major interest has centered about the nature of the machine in the galactic nucleus. The major characteristic of this machine is that it releases energy rapidly and often spasmodically by processes which are not thermonuclear in origin.The original studies which led to the conclusion that nuclei were all important were observations of the powerful radio sources and Seyfert galaxies, and evidence for the ejection of gas from galaxies of many types. The realization that the synchrotron mechanism was the dominant radiation mechanism and the later studies of Compton radiation were fundamental in leading to the conclusion that large fluxes of relativistic particles must be generated in galactic nuclei.

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