Spin and Relativistic Phenomena Around Black Holes
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چکیده
Ever since the seminal work of Penrose (1969) and Blandford & Znajek (1977), it has been realized that black hole spin may be an important energy source in astrophysics. X-ray observations are uniquely able to answer: Does black hole spin play a crucial role in powering relativistic jets such as those seen from radio-loud active galactic nuclei (AGN), Galactic microquasars, and Gamma-Ray Bursts? Indeed, the radio-loud/radio-quiet dichotomy in the AGN population is usually attributed to differences in black hole spin (with correlations between black hole spin and host galaxy morphology being hypothesized in order to explain why radioloud AGN occur in early-type galaxies; see Figure 1, drawn from Sikora et al. 2007).
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تاریخ انتشار 2009