LIMBO Observes Galactic Magnetar FRB Rates

The Long-Integration Magnetar Burst Observatory (LIMBO) represents a significant advancement in real-time radio transient detection. Its design, featuring a 4.3-meter dish and a dual-polarization feed, allows for continuous monitoring of a 250 MHz band centered at 1475 MHz. The system's real-time processing pipeline enables the detection of dispersed transients, triggering the storage of voltage data upon detection.

LIMBO's sensitivity to radio transients with fluences ≥ 43 Jy⋅ms, validated through calibrated sensitivity measurements and successful detection of pulses from the Crab Pulsar, underscores its effectiveness. The detection of 12 candidate FRB events from SGR 1935+2154 during 833 hours of observation highlights its potential for studying Galactic magnetars. The inferred cumulative rate-fluence power-law slope of α=-0.60^{+0.24}_{-0.28} provides valuable data for refining models of FRB generation.

However, the study acknowledges the need for further validation of the candidate FRB detections and addresses the statistical uncertainties associated with the measured event rates. Despite these limitations, LIMBO's capabilities position it as a valuable tool for advancing our understanding of Galactic FRBs and magnetar activity. This research contributes to the broader field of astrophysics by providing a means for continuous, real-time monitoring of transient radio phenomena.

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