MACHOs and the diffuse X-ray background

Details MACHOs and the diffuse X-ray background MACHOs and the diffuse X-ray background

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...431l..87k&link_type=abstract

The Astrophysical Journal, vol. 431, no. 2, pt. 2, p. L87-L90

Astronomy and Astrophysics

Astrophysics

4

Big Bang Cosmology, Galactic Halos, Galaxies, Interstellar Gas, X Rays, Dwarf Stars, Magellanic Clouds, Milky Way Galaxy, Rosat Mission, Stellar Coronas, Stellar Luminosity

Scientific paper

The possible contribution of X-ray emission from massive compact objects in the Galactic halo (MACHOs) to the diffuse X-ray background is explored. We show that such emission cannot be responsible for the shadowing seen in soft X-ray observations by ROSAT but that these objects may indeed contribute significantly (at levels greater than 10%) to the diffuse background at higher (greater than or approximately 0.5 keV) energies. Thus, X-ray observations may well be able to significantly constrain the spatial distribution of MACHOs.

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