{'fraction_non_alphanumeric': 0.024518388791593695, 'fraction_numerical': 0.0, 'mean_word_length': 4.836734693877551, 'pattern_counts': {'":': 0, '<': 2, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Investigation on parameters of inner edge orbit of black-hole accretion disk

The characteristics of evolution of the parameters of the inner edge of a black-hole accretion disk are investigated for pro- and retrograde accretion. Some useful relations among the parameters of the inner edge and those of the central black hole (CBH) are obtained. In addition, we discuss the evolution characteristics of the dimensionless angular momentum a of a CBH surrounded by an accretion disk with inner edge radius rin (rmb <r in <r ms) by considering the Blandford-Znajek process.