Speaker
Description
The X-ray Imaging Spectroscopy Mission (XRISM) was launched on September 7th 2023, and the onboard Xtend is now performing spectral imaging in the 0.4-13 keV band with a wide field of view of 38 arcminutes. “XRISM/Xtend Transient Search (XTS)” is a system to conduct a transient search by utilizing the wide field of view of Xtend once per a day. With the high sensitivity of about 10^-14 ergs^-1 cm^-2 for a one-day observation, XTS has been able to detect orders of magnitude fainter objects than those obtained with all-sky survey satellites (e.g. MAXI and Einstein probe), i.e. as faint objects as those obtained with Swift’s XRT and SRG’s eROSITA. In recent years, technology for detecting signals (messengers) other than electromagnetic waves, such as cosmic rays, neutrinos and gravitational waves, has also improved dramatically. Multi-messenger observations, the simultaneous observation of electromagnetic waves along with other messengers, are now being carried out, and the groundwork is being laid for a multifaceted understanding of transient astronomical events, to obtain a complete understanding of their nature. It is still challenging to explore transient events in multiple bands. XTS joins the exploration with the high sensitivity in the X-ray band . We will present our application of XTS for the exploration.
