X-rays from the radio halo of M87

Details X-rays from the radio halo of M87 X-rays from the radio halo of M87

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...312..101f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 312, Jan. 1, 1987, p. 101-110.

Astronomy and Astrophysics

Astrophysics

48

Galactic Structure, Halos, Radio Galaxies, X Ray Sources, Galactic Nuclei, Heao 2, Intergalactic Media, Interstellar Magnetic Fields, Interstellar Matter

Scientific paper

The nearby radio galaxy M87 has been studied with the Einstein X-Ray Observatory and the VLA to investigate possible inverse Compton X-ray emission from the "radio halo". An asymmetrical X-ray structure with Lx ≈ 4×1041ergs s-1 (0.2 - 4 keV) is superposed on the dominant symmetrical emission from the hot interstellar gas. It consists of broad ridges extending ≡0arcmin.5 to 5arcmin east and southwest of the nucleus. The radio halo also has prominent structures to the east and southwest, probably as a result of the bent jets seen in projection. Quantitative analysis shows that the inverse Compton model for the asymmetrical X-ray emission is possible if the magnetic field of the halo varies between 3 and 8 times below equipartition levels of ≡2 - 5 μG.

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