| Name: Ajisha C Sajayan |
| Affiliation: Indian Institute of Technology Kanpur |
| Conference ID: ASI2026_974 |
| Title: Precision Optical Astrometry of X-ray sources at the Galactic center using HST Observations. |
| Abstract Type: Poster |
| Abstract Category: High Energy Phenomena, Fundamental Physics and Astronomy |
| Author(s) and Co-Author(s) with Affiliation: Ajisha Sajayan(Indian Institute of Technology, Kanpur - 208016,India), Kunal Mooley(Indian Institute of Technology, Kanpur - 208016,India) |
| Abstract: The Galactic Center (GC) represents one of the most extreme and dynamically complex environments in the Milky Way, hosting a supermassive black hole, Sgr A*, embedded within a dense nuclear star cluster and a seemingly rich population of compact objects. Precision astrometry enables the measurement of tiny positional shifts over time, allowing proper motions to be determined even for distant sources at the Galactic Center.
We present an optical proper motion study, with milliarcsecond precision, of X-ray sources at the Galactic center, using the Hubble Space Telescope (HST). This proper motion study helps in understanding whether these sources, which include white dwarf and black hole systems, are in the vicinity of Sgr A* or are foreground sources.
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