An explosion model for the formation of the radio halo of NGC 891

Details An explosion model for the formation of the radio halo of NGC 891 An explosion model for the formation of the radio halo of NGC 891

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986acasn..27..333y&link_type=abstract

(Acta Astronomica Sinica, vol. 27, no. 4, 1986, p. 333-342) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 11, June 1

Astronomy and Astrophysics

Astrophysics

2

Disk Galaxies, Extragalactic Radio Sources, Halos, Spectrum Analysis, Galactic Evolution, Relativistic Electron Beams, Supernovae

Scientific paper

The explosion model for the formation of the radio halo of NGC 891 proposed here is mainly based on two physical assumptions: (1) the relativistic electrons belong to two families, a halo family and a disk family, the disk family originating in supernova events throughout the disk, and the halo family in a violent explosion of the galactic nucleus in the distant past; and (2) energy equipartition, where the magnetic energy density is proportional to the number density of stars. On these two assumptions, the main observed features of the radio halo of NGC 891 can be satisfactorily explained.

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