The gamma ray burst is the most violent explosion in the universe since the big bang. After years of observation and theoretical research, the exact outbreak mechanism has not been confirmed. In a paper published in the physics journal of Nature this week, Peking University’s Institute of Astronomy and Astrophysics, Postdoctoral Yan Tinghui and his co-ordinator, Professor of Changjiang, Peking University School of Physics, Las Vegas, Nevada, USA Zhang Bing, a professor of physical astronomy at the branch school (UNLV), made a breakthrough in understanding the gamma-ray radiation. The typical spectral peak of a gamma-ray burst is in the gamma-ray band that is slightly lower than MeV. The spectral index at the peak frequency has a puzzling value (-1), which is softer than the quasi-thermal spectrum (eigenvalue +0.4 to +1) but harder than the standard synchro-radiance spectral index (-1.5). . Dr. Yan Tinghui and Professor Zhang Bing found that when considering the effect of the gamma-ray burst on the outward emission of the radiation field, the resulting synchrotron radiation pattern will be changed, and when the parameters are appropriate, it can be obtained. Observe consistent results. They conclude from this that synchrotron radiation is the main radiation mechanism of gamma-ray bursts. The gamma-ray radiation zone is located far from the central engine where large-scale magnetic fields are magnetically dissipated to produce gamma-ray radiation.
Permanent Hair Remover Cream, Hair Removal Cream For Private Area, Face Hair Removal Cream
Guangzhou Yilong Cosmetics Co., Ltd. , https://www.skinmelao.com