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Figure 1: XMM-Newton/EPIC image of the bright X-ray transient XMMU J174554.4-285456 close to Sgr A*. Red, green and blue code for photons with energy 0.5-2, 2-5, and 5-10 keV, respectively. |
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Figure 2: XMM-Newton/EPIC background subtracted light curve of XMMU J174554.4-285456 in the 2-10 keV energy band. The lower light curve shows the background level scaled to the source extraction area. |
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Figure 3: PN spectrum of XMMU J174554.4-285456 with the best fit model using an absorbed power-law continuum (see Table 1) and data-to-model ratio. |
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Figure 4:
Timing analysis of XMMU J174554.4-285456 in the 2-10 keV energy band. left: power spectrum of the EPIC 2.6 s-binned light curve. The enlargement shows the X-ray pulsation candidate at the frequency
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