Abstract
Abstract An elongated X-ray source with a strong K-shell line from He-like iron (Fe xxvi) is found at (RA, Dec)J2000.0 = (17h44m00${^{s}_{.}}$0, − 29°13′40${^{\prime\prime}_{.}}$9) in the Galactic center region. The position coincides with the X-ray thread, G359.55+0.16, which is aligned with the radio non-thermal filament. The X-ray spectrum is well fitted with an absorbed thin thermal plasma (apec) model. The best-fitting temperature, metal abundance, and column density are $4.1^{+2.7}_{-1.8}$ keV, $0.58^{+0.41}_{-0.32}$ solar, and $6.1^{+2.5}_{-1.3} \times 10^{22}$ cm−2, respectively. These values are similar to those of the largely extended Galactic center X-ray emission.
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