A High Spectral Resolution Study of the Soft X-Ray Background with the X-Ray Quantum Calorimeter
Astrophysical journal/The Astrophysical journal(2019)
摘要
We present here a combined analysis of four high spectral resolution observations of the Diffuse X-ray Background (DXRB), made using the University of Wisconsin-Madison/Goddard Space Flight Center X-ray Quantum Calorimeter (XQC) sounding rocket payload. The observed spectra support the existence of a $\sim0.1~$keV Local Hot Bubble and a $\sim0.2~$keV Hot Halo, with discrepancies between repeated observations compatible with expected contributions of time-variable emission from Solar Wind Charge Exchange (SWCX). An additional component of $\sim0.9~$keV emission observed only at low galactic latitudes can be consistently explained by unresolved dM stars.
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关键词
instrumentation: spectrographs,X-rays: diffuse background,X-rays: ISM
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