Galactic Plane Scanning Survey with Insight-HXMT
Abstract
The Galactic plane scanning survey is one of the main scientific objectives of the Hard X-ray Modulation Telescope (known as Insight-HXMT). During the two-year operation of Insight-HXMT, more than 1000 scanning observations have been performed and the whole Galactic plane (0$^\circ$$<$l$<$360$^\circ$, −10$^\circ$$<$b$<$10$^\circ$) has been covered completely. We summarize the Galactic plane scanning survey of Insight-HXMT for two years. With the light curve PSF fitting method, the fluxes of the known sources in the scanned area as well as the flux errors are obtained for each scanning observation. From the relationships of SNRs and fluxes, the 5$\sigma$ sensitivities of three telescopes of Insight-HXMT are estimated as $\sim$3 mCrab (1-6 keV), $\sim$20 mCrab (7-40 keV) and $\sim$18 mCrab (25-100 keV) for an individual scanning observation of 2-3 hours, respectively. Up to the end of 2019, more than 800 X-ray sources with various types are monitored by the three telescopes and their long-term light curves with three energy bands are obtained to make further scientific analyses.
- Publication:
-
43rd COSPAR Scientific Assembly. Held 28 January - 4 February
- Pub Date:
- January 2021
- Bibcode:
- 2021cosp...43E1271L