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We present an accurate X-ray position of the massive globular cluster G1 byusing XMM-Newton and the Hubble Space Telescope (HST). The X-ray emission of G1has been detected recently with XMM-Newton. There are two possibilities for theorigin of the X-ray emission. It can be either due to accretion of the centralintermediate-mass black hole, or by ordinary low-mass X-ray binaries. Theprecise location of the X-ray emission might distinguish between these twoscenarios. By refining the astrometry of the XMM-Newton and HST data, wereduced the XMM-Newton error circle to 1.5". Despite the smaller error circle,the precision is not sufficient to distinguish an intermediate-mass black holeand luminous low-mass X-ray binaries. This result, however, suggests thatfuture Chandra observations may reveal the origin of the X-ray emission.Comment: 4 pages, 2 figures; accepted for publication in Ap

X‐Ray Localization of the Globular Cluster G1 withXMM‐Newton