2026-06-27T17:51:22Zivo://CDS.VizieR/J/ApJS/277/52026-03-03T20:03:11ZJ.ApJSIVOAGECAM obs. of SGR J1935+2154. I. Burst catalogMagnetars are neutron stars with ultrahigh magnetic fields (~10^14^-10^15^G). The magnetar SGR J1935+2154 is not only one of the most active magnetars detected so far, but also the unique confirmed source of fast radio bursts. The Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor (GECAM) is dedicated to monitor gamma-ray transients all over the sky, including magnetar short bursts. Here we report the GECAM observations of the burst activity of SGR J1935+2154 from 2021 January to 2022 December, which results in a unique and valuable data set for this important magnetar. With a targeted search of GECAM data, 159 bursts from SGR J1935+2154 are detected by GECAM-B while 97 bursts are detected by GECAM-C, including the X-ray burst associated with a bright radio burst. We find that both the burst duration and the waiting time between two successive bursts follow lognormal distributions. The period of burst activity is 134+/-20 days, thus the burst activity could be generally divided into four active episodes over these two years. Interestingly, the hardness ratio of X-ray bursts tends to be softer during these two years, especially during the active episode with radio bursts detected.neutron-starsgamma-ray-astronomyastrophysical-processesobservational-astronomystellar-astronomyhttps://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/ApJS/277/5http://doi.org/10.26093/cds/vizier/bb-8n-5https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/277/52025ApJS..277....5Xhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/277/5Cone search capability for table J/ApJS/277/5/table2 (SGR J1935+2154 burst list observed by GECAM-B from 2021 January to 2022 December)Cone search capability for table J/ApJS/277/5/table3 (SGR J1935+2154 burst list observed by GECAM-C from 2022 October to December)Xie S.-L.Cai CeYu Y.-W.Xiong S.-L.Lin L.Zhao YiZhang S.-N.,Song L.-M.Wang P.Li X.-B.Xue W.-C.Zhang P.Zheng C.Zhang Y.-Q.,Liu J.-C.Wang C.-W.Tan W.-J.Wang Y.Yu Z.-H.Feng P.-Y.,Zhang J.-P.Xiao S.Zhao H.-S.Zhang W.-L.Zhang Y.-T.Huang Y.,Zhao X.-Y.Ma X.Zheng S.-J.Li X.-Q.Wen X.-Y.Gong KeAn Z.-H.,Zhang D.-L.Yang S.Liu X.-J.Zhang F.CDS2026https://cds.unistra.fr/vizier-org/licences_vizier.htmlCDS support team <cds-question@unistra.fr>DatasetAstroObjectsastronomy