MACHOs (Massive Astrophysical Compact Halo Objects) - as discovered by microlensing experiments towards the LMC - provide a natural explanation for the galactic halo dark matter. A realistic possibility is that MACHOs are brown dwarfs of mass similar to 0.1 M.. Various arguments suggest that brown dwarfs should have a coronal X-ray emission of similar to 10(27) erg s(-1). As MACHOs are presumably clumped into dark clusters (DCs), each DC is expected to have a total X-ray luminosity of similar to 10(30) - 10(32) erg s(-1). We discuss the observational prospects for DCs in the X-ray band.

X-ray emission from dark clusters of MACHOs

DE PAOLIS, Francesco;INGROSSO, Gabriele;
1995

Abstract

MACHOs (Massive Astrophysical Compact Halo Objects) - as discovered by microlensing experiments towards the LMC - provide a natural explanation for the galactic halo dark matter. A realistic possibility is that MACHOs are brown dwarfs of mass similar to 0.1 M.. Various arguments suggest that brown dwarfs should have a coronal X-ray emission of similar to 10(27) erg s(-1). As MACHOs are presumably clumped into dark clusters (DCs), each DC is expected to have a total X-ray luminosity of similar to 10(30) - 10(32) erg s(-1). We discuss the observational prospects for DCs in the X-ray band.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11587/371287
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