SIMBAD references

2006ApJ...651.1092N - Astrophys. J., 651, 1092-1097 (2006/November-2)

An XMM-Newton search for X-ray emission from the microlensing event MACHO-96-BLG-5.

NUCITA A.A., DE PAOLIS F., INGROSSO G., ELIA D., DE PLAA J. and KAASTRA J.S.

Abstract (from CDS):

MACHO-96-BLG-5 was a microlensing event observed toward the bulge of the Galaxy with an exceptionally long duration of ∼970 days. The microlensing parallax fit parameters were used to estimate a lens mass M=6+10–3 M, corresponding to a distance d in the range 0.5-2 kpc. The upper limit on the absolute brightness for main-sequence stars of the same mass is less than 1 L, so the lens is a good black hole candidate. Such a black hole would accrete from the interstellar medium, thereby emitting in the X-ray band. Here we report the analysis of a deep XMM-Newton observation toward the MACHO-96-BLG-5 lens position. Only an upper limit (99.8% confidence level) to the X-ray flux from the lens position, 9.10x10–15 to 1.45x10–14 ergs/cm2/s in the 0.2-10 keV energy band, is obtained, allowing us to constrain the putative black hole's accretion parameters.

Abstract Copyright:

Journal keyword(s): Black Hole Physics - stars: individual (MACHO-96-BLG-5) - X-Rays: Stars

Nomenclature: Table 2: [NDI2006] N (Nos 1-6).

Simbad objects: 11

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2021.06.13-07:27:10

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