The signature of a black hole transit

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Photometry, Black Holes (Astronomy), Gravitational Lenses, X Ray Binaries, Electron Scattering, Linear Polarization, Monte Carlo Method, Polarimetry, Supergiant Stars

Scientific paper

This paper considers the possibility of identifying a black hole on the basis of the detection of some unique effect occurring during the transit of a black hole across the stellar disk of a companion star in a binary system. The results of Monte-Carlo calculations show that the amplitude of the photometric and polarimetric light curves in a typical X-ray binary is too small to be observed with present instrumentation, but that a black hole transit might be detectable in a binary having a large separation of the components. No binary system suggested as containing a stellar-mass-sized black hole is a like candidate to exhibit an observable transit signature, with the possible exception of X Persei/4U0352+30 described by White et al. (1976).

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