TY - GEN T1 - First Detection of the Powerful Gamma Ray Burst GRB221009A by the THEMIS ESA and SST particle detectors on October 9, 2022 T2 - arXiv PY - 2023/04/21 AU - Agapitov OV AU - Balikhin M AU - Hull AJ AU - Hobara Y AU - Angelopoulos V AU - Mozer FS ED - DO - DOI: 10.48550/arxiv.2304.11225 Y2 - 2025/06/21 ER -