Speaker
Description
Type-I X-ray bursts, which are nuclear-burning aided brightening phenomena on the surface of accreting neutron stars, have often been observed, and most of them show irregular behavior of light curves. However, some X-ray bursters show very regular behavior, often called "Clocked" bursters, which enable us to probe the properties of accreting neutron stars and the accreted matter by comparing theoretical models with observed light curves. In this talk, we present our X-ray burst models for the newly observed Clocked burster, SRGA J144459.2-604207. We discuss the compositions of accreted matter in SRGA J1444. While all previous Clocked bursters are likely to have solar-like compositions of accreted matter, SRGA J1444 is shown to be the first Clocked burster with non-solar elemental compositions.
