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arxiv: 1910.09231 · v1 · pith:CGSBMGPYnew · submitted 2019-10-21 · 🌌 astro-ph.IM · astro-ph.SR

Solar X-ray Monitor (XSM) On-board Chandrayaan-2 Orbiter

M. Shanmugam , S. V. Vadawale , Arpit R. Patel , Hitesh Kumar Adalaja , N. P. S. Mithun , Tinkal Ladiya , Shiv Kumar Goyal , Neeraj K. Tiwari
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Nishant Singh Sushil Kumar Deepak Kumar Painkra Y. B. Acharya Anil Bhardwaj A. K. Hait A. Patinge Abinandhan Kapoor H. N. Suresh Kumar Neeraj Satya Gaurav Saxena Kalpana Arvind
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classification 🌌 astro-ph.IM astro-ph.SR
keywords x-raysolarchandrayaan-2instrumentenergymonitoron-boardorbiter
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Solar X-ray Monitor (XSM) is one of the scientific instruments on-board Chandrayaan-2 orbiter. The XSM along with instrument CLASS (Chandras Large Area Soft x-ray Spectrometer) comprise the remote X-ray fluorescence spectroscopy experiment of Chandrayaan-2 mission with an objective to determine the elemental composition of the lunar surface on a global scale. XSM instrument will measure the solar X-rays in the energy range of 1-15 keV using state-of-the-art Silicon Drift Detector (SDD). The Flight Model (FM) of the XSM payload has been designed, realized and characterized for various operating parameters. XSM provides energy resolution of 180 eV at 5.9 keV with high time cadence of one second. The X-ray spectra of the Sun observed with XSM will also contribute to the study of solar corona. The detailed description and the performance characteristics of the XSM instrument are presented in this paper.

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  1. Solar Axions from Nuclear Transitions

    hep-ph 2026-05 unverdicted novelty 3.0

    Solar axion fluxes from 57Fe and 83Kr nuclear transitions differ by three orders of magnitude, yielding stronger constraints on |g_aN^eff × g_aγγ| and g_aγγ vs. m_a from Chandrayaan-2 XSM data for iron.