Magnetic and Electric Fields around the Black Hole in Cyg X-1

2003/04/09 by Yu. N. Gnedin, Gnedin, Yu. N., N. V. Borisov +8 · 2 citations
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astrophysical Phenomena and Observations #Mechanics and Biomechanics Studies #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/0304158

10 pages, 1 figure

arxiv created 2003/04/09 · arxiv updated 2009/12/01

Abstract

Analysis of polarimetric observations of X-ray binary Cyg X-1/HDE 226868 including the data obtained by BTA-6m allows to estimate the magnetic field magnitude near the inner radius of the accretion disk. The magnetic field magnitude occurred to be ∼ 10⁸ G. For power law of radial dependence of magnetic field into an accretion disk we estimates the value of an index of power law. For the Cyg X-1/HDE 226868 system the value of this index appears non less then two. If one accepts as a characteristic scale of a magnetic field generation region the dyadosphere radius, one can estimate the charge magnitude of a black hole. For Cyg X-1 this magnitude appears to be ∼ 0.01M√(G), where M is a black hole mass.

Cited by

• Magnetic Fields of Black Holes and the Variability Plane
• Magnetic Field Measurement in Black Hole X-Ray Binary Cygnus X-1

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