Speaker
Description
Pulsars are critical laboratories for studying extreme particle acceleration, with the Crab pulsar serving as a benchmark across the electromagnetic spectrum. Observations in the MeV gamma-ray band ($0.2–5$ MeV) are essential for probing the spectral turnover where emission mechanisms transition. The upcoming Compton Spectrometer and Imager (COSI) will provide sensitive measurements in this regime; however, analyzing pulsar data with a Compton telescope requires managing large datasets and complex phase-resolved selection. We present a streamlined, high-performance framework developed using vectorized NumPy-based algorithms to facilitate phase-resolved studies using simulated COSI data.Our framework consists of a specialized suite designed for the rapid processing of MEGAlib simulated event files. It features a frequency-based PhaseAssigner for efficient pulsar folding and a robust PhaseSelector capable of handling multiple, simultaneous phase intervals to isolate specific components of the pulse profile. To validate detection significance, we implement a cumulative $Z^2_2$ statistic diagnostic, enabling real-time monitoring of signal growth over the observation duration. By applying this framework to the Crab pulsar as a test case, we demonstrate the construction of high-resolution pulse profiles and the effective separation of pulsed emission from steady-state nebular components. This methodology establishes a scalable foundation for future COSI pulsar analyses, highlighting the mission's potential to advance our understanding of magnetospheric emission physics through optimized, large-scale event processing.
| Participate the oral/poster presentation award competition | Yes |
|---|