3 papers
astro-ph.HE2026
A fast X-ray transient with chromatic flares: signatures of violent collisions induced by late-time central engine reactivation
Shao-Yu Fu, Cui-Yuan Dai, Ai-Ling Wang +57
Extragalactic Fast X-ray Transients (EFXTs) represent an emerging class of high-energy phenomena characterized by X-ray outbursts lasting from tens to hundreds of seconds. However,…
astro-ph.HE2024
Early-time optical spectral shape measurements of GRB 200925B
Zhavlonbek Abdullayev, Toktarkhan Komesh, Bruce Grossan +5
Optical broad-band spectral shape measurements of gamma-ray bursts (GRBs) are typically made starting an hour or more after the trigger event. With our automated, rapid-response sy…
astro-ph.IM2020
On-sky silicon photomultiplier detector performance measurements for millisecond to sub-microsecond optical source variability studies
Albert Wai Kit Lau, Mehdi Shafiee, George F. Smoot +3
In our Ultra-Fast Astronomy (UFA) program, we aim to improve measurements of variability of astronomical targets on millisecond and shorter time scales. In this work, we present in…