XMM search for $X$-ray emission from the black hole candidate MACHO-96-BLG-5

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dc.creatorNucita, A. A.
dc.creatorDe Paolis, F.
dc.creatorIngrosso, G.
dc.creatorElia, D.
dc.creatorde Plaa, J.
dc.creatorKaastra, J. S.
dc.date2006-08-31
dc.date.accessioned2026-07-07T07:19:27Z
dc.date.available2026-07-07T07:19:27Z
dc.descriptionMACHO-96-BLG-5 is a microlensing event observed towards the bulge of the Galaxy with exceptionally long duration of $\sim 970$ days. The microlensing parallax fit parameters were used to estimate the lens mass $M=6^{+10}_{-3}$ M$_{\odot}$ and its distance $d$ which results to be in the range 0.5 kpc - 2 kpc. The upper limit on the absolute brightness for main-sequence stars of the same mass is less than 1 $L_{\odot}$ so that the lens is a good black hole candidate. If it is so, the black hole would accrete by interstellar medium thereby emitting in the $X$-ray band. Here, the analysis of an {\it XMM} deep observation towards MACHO-96-BLG-5 lens position is reported. Only an upper limit (at 99.8% confidence level) to the $X$-ray flux from the lens position of $9.10\times 10^{-15}$-- $1.45\times 10^{-14}$ erg cm$^{-2}$ s$^{-1}$ in the energy band $0.2-10$ keV has been obtained from that deep observation allowing to constrain the putative black hole accretion parameters.
dc.descriptionin press on ApJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0608692
dc.identifierhttp://arxiv.org/abs/astro-ph/0608692
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/114633
dc.subjectAstrophysics
dc.titleXMM search for $X$-ray emission from the black hole candidate MACHO-96-BLG-5
dc.typetext

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