BLACK HOLES

In my continued journey with Stingray.jl During GSoC 2025, this phase focused on a core aspect of high-energy astrophysics: time filtering using GTIs (Good Time Intervals) and BTIs (Bad Time Intervals) . After a productive discussion with my mentor @matteobachetti during our meet, I dove into implementing and refining functionality around GTIs—an essential tool in the timing analysis of astrophysical data. What Are GTIs and BTIs? GTIs define intervals during which the data is considered reliable—free of contamination, instrument artifacts, or observational interruptions. BTIs are the complementary regions—gaps between GTIs that typically represent unusable or noisy time segments. Correct handling of these intervals is critical, especially in X-ray timing , where even small artifacts can skew power spectra, light curves, and periodograms. Worked on Features this week I extended and validated the implementation of GTI filtering in both EventList and LightCurve structu...

Hey everyone! If you’ve read my first blog , you already know how this journey started — with nervous excitement, inspiring mentors, and my deep love for astronomy. Since then, things have only gotten more interesting — and yes, more challenging, but in the best way possible! Developing, Debugging, and Growing These past few weeks have felt like a whirlwind of beauty. I’ve found myself diving deeper into spectral analysis, implementing windowing techniques, exploring real research articles, and most excitingly, contributing to the actual development of functions inside Stingray.jl! A New Adventure: EventList and GTI Handling Now comes the exciting part — I’ve been working on mission support ,  PR #49 , where I got to play around with EventList structures. I made a minimal version   EventList that could read test files, handle metadata smartly, and even filter events using GTIs (Good Time Intervals). My mentor @fergus and I created a   filter_time! ...