On 11 November 2025 the Sun produced a remarkable flare, during which protons were accelerated to unusually high energies. The event was detected by neutron monitors (NMs) on the Earth, because the protons and atomic nuclei accelerated at the Sun, while travelling through the interplanetary space, encounter the atmosphere of the Earth.
Prof Pieter Stoker passed away on November 8th, 2022. He was 96 years old. His main contributions to science, including starting heliophysics at the NWU, were recently highlighted in the SAIP Physics Comment magazine, pages 11 - 12.
Lev Dorman passed away in his 94th year. From the first detection of the ever largest GLE 65 years ago till last months he was very active not only in space research and education but also in the endeavor of accumulation of the whole geospace knowledge in his valuable books.
The University of Surrey in the UK has developed a new model for nowcasting the radiation environment for the aviation sector. A version of this model, called MAIRE-S, which uses NMDB data in its algorithms can be viewed online.
One defective counter tube has been replaced on TERA 9NM64 on 19/11/2021. The count rate is slightly higher since then, with a difference smaller than 1% however. The corrected_for_efficiency value will take this change into account when we have enough hindsight to evaluate more precisely the bias.
A X1.0 class X-ray flare occurred on 2021/10/28. Solar Energetic Particles have been recorded by GOES and Stereo. The polar stations of the Global Neutron Monitor Network have seen a sudden, but moderate, increase in cosmic ray count rates.
