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We report on X-ray emission from the type 2 Seyfert galaxy NGC 4388 observed with the Chandra X-ray Observatory. A hard X-ray peak is found at the position of the active nucleus suggested by optical and radio observations. Extended soft X-ray emission correlates well with the ionization cone found in optical-line emission. A large soft X-ray extension is found up to 16 kpc (and possibly 30 kpc) to the north of the galaxy. Photoionized gas with low ionization parameters (logξ≤ 0.4) appears to be the likely explanation for this emission. The same ionized gas clouds could be responsible for the optical [O iii] emission. Fe Kα line emission from cold material is found to be extended by a few kpc.
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Iwasawa et al. (2003) studied this question.
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