Fig. 2.
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GPs with X-ray detection from Swift (J0205+1504 and J0227+2355; top two rows), the GP with X-ray detection from Chandra (J1605+4405; third row), and the GP with X-ray detection from eROSITA (J0906+0242; bottom row). Left panels: SDSS, Swift, and Chandra image cutouts. Right panels: LAMOST spectra. The black lines mark the flux-calibrated spectrum, the orange curves the spectrum smoothed with a kernel of 3, and the gray-shaded regions the flux error.
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