Stimulated by the recent discovery of PSR J1833-1034 in SNR G21.5-0.9 and its age parameters presented by two groups of discovery, we demonstrate that the PSR J1833- 1034 was born 2053 years ago from a supernova explo...Stimulated by the recent discovery of PSR J1833-1034 in SNR G21.5-0.9 and its age parameters presented by two groups of discovery, we demonstrate that the PSR J1833- 1034 was born 2053 years ago from a supernova explosion, the BC 48 guest star observed in the Western Han （Early Han） Dynasty by ancient Chinese. Based on a detailed analysis of the Chinese ancient record of the BC 48 guest star and the new detected physical parameters of PSR J1833-1034, agreements on the visual position, age and distance between PSR J1833- 1034 and the BC 48 guest star are obtained. The initial period/90 of PSR J1833-1034 is now derived from its historical and current observed data without any other extra assumption on P0 itself, except that the factor PP is a constant in its evolution until now.展开更多
The quasi-periodic oscillations （QPOs） in black hole （BH） systems with different scales are interpreted based on the magnetic reconnection of large-scale mag- netic fields generated by toroidal electric currents f...The quasi-periodic oscillations （QPOs） in black hole （BH） systems with different scales are interpreted based on the magnetic reconnection of large-scale mag- netic fields generated by toroidal electric currents flowing in the inner region of the accretion disk, where the current density is assumed to be proportional to the mass density of the accreting plasma. The magnetic connection （MC） is taken into account in resolving dynamic equations describing the accretion disk, in which the MC be- tween the inner and outer disk regions, between the plunging region and the disk, and between the BH horizon and the disk are involved. It turns out that a single QPO frequency associated with several BH systems with different scales can be fitted by in- voking the magnetic reconnection due to the MC between the inner and outer regions of the disk, including the BH binaries XTE J1859＋226, XTE J1650-500 and GRS 1915＋105 and the massive BHs in NGC 5408 X-1 and RE J1034＋396. In addition, the X-ray spectra corresponding to the QPOs for these sources are fitted based on the typical disk-corona model.展开更多
Within the scope of certain social and religious movements, mesmerism had a considerable impact on the Americanway of life during the last decades of 19th century. A famous example is the Christian Science of Mary Bak...Within the scope of certain social and religious movements, mesmerism had a considerable impact on the Americanway of life during the last decades of 19th century. A famous example is the Christian Science of Mary Baker EddyBut also less known groups adopted mesmeric ideas and practices. The paper focuses on the concept of＂Karezza＂.It combined a specific sexual practice with religious ideas of divine love, birth control, social reform, women＇semancipation and health education. It was created by Alice Bunker Stockham （1833-1912）, an obstetrician andgynecologist from Chicago. Among other authorities, the writer Leo Tolstoy and medical psychologist HavelockEllis appreciated her approach. She was a pioneer of the sexual and marriage reform promoting practical advice foreveryday life. As a doctor, she stressed especially the disastrous consequences of a brutal sexual life destroyingbody and mind （not only of the women）. As an antidote, she propagated the ＂Karezza love＂ avoiding ejaculation ada punctual orgasm （climax） during intercourse. The leading idea was the imagery of a mesmeric ＂fluidum＂ unitingindividuals spiritually. Bunker＇s publications were translated into German. They corresponded to the Lebensreformmovement, but never became popular. Also the early sexology about 1900 ignored Bunker＇s concept as well as thesexual medicine later on. It is worthwhile to reconsider it within the context of the history of medicine, culture, andanthropology.展开更多
基金Supported by the National Natural Science Foundation of China.
文摘Stimulated by the recent discovery of PSR J1833-1034 in SNR G21.5-0.9 and its age parameters presented by two groups of discovery, we demonstrate that the PSR J1833- 1034 was born 2053 years ago from a supernova explosion, the BC 48 guest star observed in the Western Han （Early Han） Dynasty by ancient Chinese. Based on a detailed analysis of the Chinese ancient record of the BC 48 guest star and the new detected physical parameters of PSR J1833-1034, agreements on the visual position, age and distance between PSR J1833- 1034 and the BC 48 guest star are obtained. The initial period/90 of PSR J1833-1034 is now derived from its historical and current observed data without any other extra assumption on P0 itself, except that the factor PP is a constant in its evolution until now.
基金supported by the National Natural Science Foundation of China (Grant Nos. 11173011, 11143001, 11103003 and 11045004)the National Basic Research Program of China (973 program, 2009CB824800)the Fundamental Research Funds for the Central Universities (HUST: 2011TS159)
文摘The quasi-periodic oscillations （QPOs） in black hole （BH） systems with different scales are interpreted based on the magnetic reconnection of large-scale mag- netic fields generated by toroidal electric currents flowing in the inner region of the accretion disk, where the current density is assumed to be proportional to the mass density of the accreting plasma. The magnetic connection （MC） is taken into account in resolving dynamic equations describing the accretion disk, in which the MC be- tween the inner and outer disk regions, between the plunging region and the disk, and between the BH horizon and the disk are involved. It turns out that a single QPO frequency associated with several BH systems with different scales can be fitted by in- voking the magnetic reconnection due to the MC between the inner and outer regions of the disk, including the BH binaries XTE J1859＋226, XTE J1650-500 and GRS 1915＋105 and the massive BHs in NGC 5408 X-1 and RE J1034＋396. In addition, the X-ray spectra corresponding to the QPOs for these sources are fitted based on the typical disk-corona model.
文摘Within the scope of certain social and religious movements, mesmerism had a considerable impact on the Americanway of life during the last decades of 19th century. A famous example is the Christian Science of Mary Baker EddyBut also less known groups adopted mesmeric ideas and practices. The paper focuses on the concept of＂Karezza＂.It combined a specific sexual practice with religious ideas of divine love, birth control, social reform, women＇semancipation and health education. It was created by Alice Bunker Stockham （1833-1912）, an obstetrician andgynecologist from Chicago. Among other authorities, the writer Leo Tolstoy and medical psychologist HavelockEllis appreciated her approach. She was a pioneer of the sexual and marriage reform promoting practical advice foreveryday life. As a doctor, she stressed especially the disastrous consequences of a brutal sexual life destroyingbody and mind （not only of the women）. As an antidote, she propagated the ＂Karezza love＂ avoiding ejaculation ada punctual orgasm （climax） during intercourse. The leading idea was the imagery of a mesmeric ＂fluidum＂ unitingindividuals spiritually. Bunker＇s publications were translated into German. They corresponded to the Lebensreformmovement, but never became popular. Also the early sexology about 1900 ignored Bunker＇s concept as well as thesexual medicine later on. It is worthwhile to reconsider it within the context of the history of medicine, culture, andanthropology.
