The Russian Space Telescope “Spectr-RG” recorded X-ray light from 13 new tidal destruction events (TDE) when the star bursts into pieces of the black hole gravitational field. At the same time, the black hole produces radiation, which is emitted from the inner area of accretion of the substance from the deceased star. The discoveries are reported in the preprint of articles published in the repository ARXIV.ORG.
TDE was found from the number of X-ray transients (changing the brightness of X-ray sources) identified by the Erosita Space Telescope during the sky scanning from June 10 to December 1420. TDE identified have properties similar to TDE properties detected in previous studies. Of particular interest is the event designated as SRGE J144738.4 + 671821, which, unlike the rest, continued to emit radiation after its opening at least six months.
The most remote TDE, which is known as SRGE J163831.7 + 534020, has a red displacement of approximately 0.581, which corresponds to the radial distance (takes into account the accelerated expansion of the universe) almost seven billion light years.
Four of 13 TDE demonstrated a brightness raising that coincides with the X-ray flash or preceding it. The remaining nine events do not demonstrate any signs of optical activity associated with star tidal destruction.
According to scientists, the survey of the sky “Spectrum” will continue until the end of 2023. Researchers plan to reduce the events detection threshold by about two times, which should help find about 700 events by the end of the 4-year review.