3.55-keV Anomaly as the First X-ray Laser in Space| Chapter 10 | Research Trends and Challenges in Physical Science Vol.8

 Under near binary star systems consisting of a red giant and a neutron star, the 3.55-keV Ly-(alpha) line of the hydrogen-like 14Si can be created in a 6x1012 G magnetic field. 14Si ions in the magnetic column of binary neutron stars transmit this recombination radiation to the ground Landau level. In magnetic fields of 4x1012 – 1013 G, the Ly-(alpha) transition energy for hydrogen-like 14Si is computed. If the 3.55-keV line is a laser line, it can be seen up to z (leq) 100 red shifts. This line is most likely an X-ray candle produced by a large amount of silicon in these close binary systems in the universe. Due to the complicated geometry in such binary systems, the 3.55-keV line is unique. Other hydrogen-like ions can also emit laser radiation in the (1–20)-keV energy range. A laser line will always be narrowed. It is also mentioned that there are thermal X-ray sources in space that generate lines in the keV range.

Author(s) Details:

Vladimir Burdyuzha,
Nuclear Physics and Astrophysics Department, Lebedev Physics Institute, Russian Academy of Sciences, Moscow 117997, Russia.

Please see the link here: https://stm.bookpi.org/RTCPS-V8/article/view/6016