Aerospace, Physics, and Space Science Student Publications
Document Type
Poster
Publication Title
Northrop Grumman Engineering & Science Student Design Showcase
Abstract
Using RXTE (Rossi X-ray Timing Explorer) and SwiftBAT (Swift Burst Alert Telescope), I modeled the X-Ray light curve of MRK-421 to investigate the quasi-periodic oscillations (QPOs). A maximum likelihood approach with a damped harmonic oscillator (DHO) model was applied to CARMAprocessed light curves. Both datasets reveal periodic behavior, with SwiftBBAT showing a smooth ~400-day signal, and RXTE producing a staggered ~700-800 day variation. Results support the presence of QPOs while highlighting instrument-dependent variability consistent with differences in sensitivity and energy range.
Advisor
Eric Perlman
Publication Date
4-24-2026
Recommended Citation
Cusumano, Vanessa, "Maximum Likelihood Light Curve Prediction of QPO in MRK-421" (2026). Aerospace, Physics, and Space Science Student Publications. 75.
https://repository.fit.edu/apss_student/75